fix: use portal for showing effort dropdown

public/api-docs.html

@@ -489,7 +489,7 @@
                                 <span class="endpoint-path"><span class="api-url">http://localhost:3001</span>/api/agent</span>
                             </div>
 
-                            <p>Trigger an AI agent (Claude, Cursor, or Codex) to work on a project.</p>
+                            <p>Trigger an AI agent (Claude, Cursor, Codex, Gemini, or OpenCode) to work on a project.</p>
 
                             <h4>Request Body Parameters</h4>
                             <table>
@@ -524,7 +524,7 @@
                                         <td><code>provider</code></td>
                                         <td>string</td>
                                         <td><span class="badge badge-optional">Optional</span></td>
-                                        <td><code>claude</code>, <code>cursor</code>, or <code>codex</code> (default: <code>claude</code>)</td>
+                                        <td><code>claude</code>, <code>cursor</code>, <code>codex</code>, <code>gemini</code>, or <code>opencode</code> (default: <code>claude</code>)</td>
                                     </tr>
                                     <tr>
                                         <td><code>stream</code></td>
@@ -540,6 +540,12 @@
                                             Model identifier for the AI provider (loading from constants...)
                                         </td>
                                     </tr>
+                                    <tr>
+                                        <td><code>effort</code></td>
+                                        <td>string</td>
+                                        <td><span class="badge badge-optional">Optional</span></td>
+                                        <td>Reasoning effort for Claude, Codex, and OpenCode models that expose effort metadata. Use <code>default</code> or omit it to let the provider decide.</td>
+                                    </tr>
                                     <tr>
                                         <td><code>cleanup</code></td>
                                         <td>boolean</td>

server/claude-sdk.js

@@ -12,11 +12,13 @@
  * - WebSocket message streaming
  */
 
-import { query } from '@anthropic-ai/claude-agent-sdk';
 import crypto from 'crypto';
 import { promises as fs } from 'fs';
-import path from 'path';
 import os from 'os';
+import path from 'path';
+
+import { query } from '@anthropic-ai/claude-agent-sdk';
+
 import { CLAUDE_FALLBACK_MODELS } from './modules/providers/list/claude/claude-models.provider.js';
 import { providerModelsService } from './modules/providers/services/provider-models.service.js';
 import { resolveClaudeCodeExecutablePath } from './shared/claude-cli-path.js';
@@ -41,6 +43,15 @@ const TOOL_APPROVAL_TIMEOUT_MS = parseInt(process.env.CLAUDE_TOOL_APPROVAL_TIMEO
 
 const TOOLS_REQUIRING_INTERACTION = new Set(['AskUserQuestion', 'ExitPlanMode']);
 
+function resolveClaudeEffort(model, effort, modelsDefinition = CLAUDE_FALLBACK_MODELS) {
+  const selectedModel = modelsDefinition?.OPTIONS?.find((option) => option.value === model) || null;
+  const allowedEfforts = selectedModel?.effort?.values
+    ?.map((value) => value.value) || [];
+  return typeof effort === 'string' && effort !== 'default' && allowedEfforts.includes(effort)
+    ? effort
+    : undefined;
+}
+
 function createRequestId() {
   if (typeof crypto.randomUUID === 'function') {
     return crypto.randomUUID();
@@ -145,13 +156,8 @@ function matchesToolPermission(entry, toolName, input) {
   return false;
 }
 
-/**
- * Maps CLI options to SDK-compatible options format
- * @param {Object} options - CLI options
- * @returns {Object} SDK-compatible options
- */
 function mapCliOptionsToSDK(options = {}) {
-  const { sessionId, cwd, toolsSettings, permissionMode } = options;
+  const { sessionId, cwd, toolsSettings, permissionMode, effort } = options;
 
   const sdkOptions = {};
 
@@ -163,32 +169,26 @@ function mapCliOptionsToSDK(options = {}) {
   // which does not reliably follow npm's shell wrappers like cross-spawn does.
   sdkOptions.pathToClaudeCodeExecutable = resolveClaudeCodeExecutablePath(process.env.CLAUDE_CLI_PATH);
 
-  // Map working directory
   if (cwd) {
     sdkOptions.cwd = cwd;
   }
 
-  // Map permission mode
   if (permissionMode && permissionMode !== 'default') {
     sdkOptions.permissionMode = permissionMode;
   }
 
-  // Map tool settings
   const settings = toolsSettings || {
     allowedTools: [],
     disallowedTools: [],
     skipPermissions: false
   };
 
-  // Handle tool permissions
   if (settings.skipPermissions && permissionMode !== 'plan') {
-    // When skipping permissions, use bypassPermissions mode
     sdkOptions.permissionMode = 'bypassPermissions';
   }
 
   let allowedTools = [...(settings.allowedTools || [])];
 
-  // Add plan mode default tools
   if (permissionMode === 'plan') {
     const planModeTools = ['Read', 'Task', 'exit_plan_mode', 'TodoRead', 'TodoWrite', 'WebFetch', 'WebSearch'];
     for (const tool of planModeTools) {
@@ -207,22 +207,24 @@ function mapCliOptionsToSDK(options = {}) {
 
   sdkOptions.disallowedTools = settings.disallowedTools || [];
 
-  // Map model (default to sonnet)
-  // Valid models: sonnet, opus, haiku, opusplan, sonnet[1m], fable
   sdkOptions.model = options.model || CLAUDE_FALLBACK_MODELS.DEFAULT;
-  // Model logged at query start below
 
-  // Map system prompt configuration
+  const resolvedEffort = resolveClaudeEffort(
+    sdkOptions.model,
+    effort,
+    options.effortModels || CLAUDE_FALLBACK_MODELS,
+  );
+  if (resolvedEffort) {
+    sdkOptions.effort = resolvedEffort;
+  }
+
   sdkOptions.systemPrompt = {
     type: 'preset',
-    preset: 'claude_code'  // Required to use CLAUDE.md
+    preset: 'claude_code'
   };
 
-  // Map setting sources for CLAUDE.md loading
-  // This loads CLAUDE.md from project, user (~/.config/claude/CLAUDE.md), and local directories
   sdkOptions.settingSources = ['project', 'user', 'local'];
 
-  // Map resume session
   if (sessionId) {
     sdkOptions.resume = sessionId;
   }
@@ -533,20 +535,24 @@ async function queryClaudeSDK(command, options = {}, ws) {
       sessionId,
       options.model,
     );
+    let effortModels = CLAUDE_FALLBACK_MODELS;
+    try {
+      effortModels = (await providerModelsService.getProviderModels('claude')).models;
+    } catch (error) {
+      console.warn('[Claude SDK] Unable to load provider models for effort validation:', error);
+    }
 
-    // Map CLI options to SDK format
     const sdkOptions = mapCliOptionsToSDK({
       ...options,
       model: resolvedModel || options.model,
+      effortModels,
     });
 
-    // Load MCP configuration
     const mcpServers = await loadMcpConfig(options.cwd);
     if (mcpServers) {
       sdkOptions.mcpServers = mcpServers;
     }
 
-    // Handle images - save to temp files and modify prompt
     const imageResult = await handleImages(command, options.images, options.cwd);
     const finalCommand = imageResult.modifiedCommand;
     tempImagePaths = imageResult.tempImagePaths;
@@ -650,7 +656,7 @@ async function queryClaudeSDK(command, options = {}, ws) {
       return { behavior: 'deny', message: decision.message ?? 'User denied tool use' };
     };
 
-    // Set stream-close timeout for interactive tools (Query constructor reads it synchronously). Claude Agent SDK has a default of 5s and this overrides it
+    // Query constructor reads this synchronously.
     const prevStreamTimeout = process.env.CLAUDE_CODE_STREAM_CLOSE_TIMEOUT;
     process.env.CLAUDE_CODE_STREAM_CLOSE_TIMEOUT = '300000';
 

server/modules/providers/list/claude/claude-models.provider.ts

@@ -5,6 +5,7 @@ import type { IProviderModels } from '@/shared/interfaces.js';
 import type {
   ProviderChangeActiveModelInput,
   ProviderCurrentActiveModel,
+  ProviderModelOption,
   ProviderModelsDefinition,
   ProviderSessionActiveModelChange,
 } from '@/shared/types.js';
@@ -18,27 +19,89 @@ export const CLAUDE_FALLBACK_MODELS: ProviderModelsDefinition = {
     {
       value: 'default',
       label: 'Default (recommended)',
-      description: 'Use the default model (currently Opus 4.8 (1M context)) · $5/$25 per Mtok',
+      description: 'Use the Claude Code default model (currently Sonnet 4.6)',
+      effort: {
+        default: 'high',
+        values: [
+          { value: 'low' },
+          { value: 'medium' },
+          { value: 'high' },
+          { value: 'max' },
+        ],
+      },
     },
     {
       value: 'fable',
       label: 'Fable',
       description: 'Fable 5 · Most capable for your hardest and longest-running tasks · Uses your limits ~2× faster than Opus',
+      effort: {
+        default: 'high',
+        values: [
+          { value: 'low' },
+          { value: 'medium' },
+          { value: 'high' },
+          { value: 'xhigh' },
+          { value: 'max' },
+        ],
+      },
     },
     {
       value: "sonnet",
       label: "Sonnet",
       description: "Sonnet 4.6 · Best for everyday tasks · $3/$15 per Mtok",
+      effort: {
+        default: 'high',
+        values: [
+          { value: 'low' },
+          { value: 'medium' },
+          { value: 'high' },
+          { value: 'max' },
+        ],
+      },
     },
     {
       value: 'sonnet[1m]',
       label: 'Sonnet (1M context)',
       description: 'Sonnet 4.6 for long sessions · $3/$15 per Mtok',
+      effort: {
+        default: 'high',
+        values: [
+          { value: 'low' },
+          { value: 'medium' },
+          { value: 'high' },
+          { value: 'max' },
+        ],
+      },
+    },
+    {
+      value: 'opus',
+      label: 'Opus',
+      description: 'Opus 4.8 · Best for everyday, complex tasks · ~2× usage vs Sonnet',
+      effort: {
+        default: 'high',
+        values: [
+          { value: 'low' },
+          { value: 'medium' },
+          { value: 'high' },
+          { value: 'xhigh' },
+          { value: 'max' },
+        ],
+      },
     },
     {
       value: 'opus[1m]',
       label: 'Opus 4.8 (1M context)',
       description: 'Opus 4.8 with 1M context · Most capable for complex work · $5/$25 per Mtok',
+      effort: {
+        default: 'high',
+        values: [
+          { value: 'low' },
+          { value: 'medium' },
+          { value: 'high' },
+          { value: 'xhigh' },
+          { value: 'max' },
+        ],
+      },
     },
     {
       value: 'haiku',
@@ -48,6 +111,15 @@ export const CLAUDE_FALLBACK_MODELS: ProviderModelsDefinition = {
   ],
   DEFAULT: 'default',
 };
+
+export const findClaudeModelOption = (model: string | undefined | null): ProviderModelOption | null => {
+  const normalizedModel = typeof model === 'string' ? model.trim() : '';
+  if (!normalizedModel) {
+    return null;
+  }
+
+  return CLAUDE_FALLBACK_MODELS.OPTIONS.find((option) => option.value === normalizedModel) ?? null;
+};
 type ClaudeInitEvent = {
   sessionId?: string;
   session_id?: string;

server/modules/providers/list/codex/codex-models.provider.ts

@@ -21,11 +21,30 @@ import {
 
 export const CODEX_FALLBACK_MODELS: ProviderModelsDefinition = {
   OPTIONS: [
-    { value: 'gpt-5.5', label: 'gpt-5.5' },
+    {
-    { value: 'gpt-5.4', label: 'gpt-5.4' },
+      value: 'gpt-5.5',
-    { value: 'gpt-5.4-mini', label: 'gpt-5.4-mini' },
+      label: 'gpt-5.5',
-    { value: 'gpt-5.3-codex', label: 'gpt-5.3-codex' },
+      effort: {
-    { value: 'gpt-5.2', label: 'gpt-5.2' },
+        default: 'medium',
+        values: [{ value: 'low' }, { value: 'medium' }, { value: 'high' }, { value: 'xhigh' }],
+      },
+    },
+    {
+      value: 'gpt-5.4',
+      label: 'gpt-5.4',
+      effort: {
+        default: 'medium',
+        values: [{ value: 'low' }, { value: 'medium' }, { value: 'high' }, { value: 'xhigh' }],
+      },
+    },
+    {
+      value: 'gpt-5.4-mini',
+      label: 'gpt-5.4-mini',
+      effort: {
+        default: 'medium',
+        values: [{ value: 'low' }, { value: 'medium' }, { value: 'high' }, { value: 'xhigh' }],
+      },
+    },
   ],
   DEFAULT: 'gpt-5.4',
 };
@@ -37,6 +56,11 @@ type CodexCachedModel = {
   priority?: number;
   visibility?: string;
   supported_in_api?: boolean;
+  default_reasoning_level?: string;
+  supported_reasoning_levels?: Array<{
+    effort?: string;
+    description?: string;
+  }>;
 };
 
 const CODEX_MODELS_CACHE_PATH = path.join(os.homedir(), '.codex', 'models_cache.json');
@@ -51,15 +75,39 @@ const readCodexPriority = (value: unknown): number => (
   typeof value === 'number' && Number.isFinite(value) ? value : Number.MAX_SAFE_INTEGER
 );
 
-const mapCodexModel = (model: CodexCachedModel): ProviderModelOption => ({
+const mapCodexModel = (model: CodexCachedModel): ProviderModelOption => {
-  value: model.slug as string,
+  const effortValues = Array.isArray(model.supported_reasoning_levels)
-  label: readOptionalString(model.display_name) ?? (model.slug as string),
+    ? model.supported_reasoning_levels
-  description: readOptionalString(model.description),
+      .map((level) => {
-});
+        const value = readOptionalString(level?.effort);
+        if (!value) {
+          return null;
+        }
+
+        return {
+          value,
+          description: readOptionalString(level?.description),
+        };
+      })
+      .filter((level): level is NonNullable<typeof level> => Boolean(level))
+    : [];
+
+  return {
+    value: model.slug as string,
+    label: readOptionalString(model.display_name) ?? (model.slug as string),
+    description: readOptionalString(model.description),
+    effort: effortValues.length > 0
+      ? {
+          default: readOptionalString(model.default_reasoning_level) ?? undefined,
+          values: effortValues,
+        }
+      : undefined,
+  };
+};
 
 const buildCodexModelsDefinition = (models: CodexCachedModel[]): ProviderModelsDefinition => {
   const sortedModels = [...models]
-    .filter((model) => model.visibility !== 'hidden' && model.supported_in_api !== false)
+    .filter((model) => model.visibility === 'list' && model.supported_in_api !== false)
     .sort((left, right) => readCodexPriority(left.priority) - readCodexPriority(right.priority));
 
   const options: ProviderModelOption[] = [];

server/modules/providers/list/opencode/opencode-models.provider.ts

@@ -74,6 +74,13 @@ const VERSION_TOKEN = /^[a-z]\d+$/i;
 const NUMERIC_TOKEN = /^\d+(?:\.\d+)*$/;
 const SHORT_ACRONYM_TOKEN = /^[a-z]{2,3}$/;
 
+type OpenCodeVerboseModel = {
+  id?: string;
+  name?: string;
+  providerID?: string;
+  variants?: Record<string, unknown>;
+};
+
 export const parseOpenCodeModelsStdout = (stdout: string): string[] => {
   const ids: string[] = [];
 
@@ -91,6 +98,83 @@ export const parseOpenCodeModelsStdout = (stdout: string): string[] => {
   return [...new Set(ids)];
 };
 
+const countJsonBraceDelta = (value: string): number => {
+  let delta = 0;
+  let inString = false;
+  let escaped = false;
+
+  for (const character of value) {
+    if (escaped) {
+      escaped = false;
+      continue;
+    }
+
+    if (character === '\\') {
+      escaped = inString;
+      continue;
+    }
+
+    if (character === '"') {
+      inString = !inString;
+      continue;
+    }
+
+    if (inString) {
+      continue;
+    }
+
+    if (character === '{') {
+      delta += 1;
+    } else if (character === '}') {
+      delta -= 1;
+    }
+  }
+
+  return delta;
+};
+
+const isOpenCodeVerboseModel = (value: unknown): value is OpenCodeVerboseModel => {
+  const record = readObjectRecord(value);
+  return Boolean(record && readOptionalString(record.id));
+};
+
+export const parseOpenCodeVerboseModelsStdout = (stdout: string): OpenCodeVerboseModel[] => {
+  const models: OpenCodeVerboseModel[] = [];
+  let buffer: string[] = [];
+  let depth = 0;
+
+  for (const rawLine of stdout.split(/\r?\n/)) {
+    const line = rawLine.trim();
+    if (buffer.length === 0) {
+      if (line === '{') {
+        buffer = [rawLine];
+        depth = 1;
+      }
+      continue;
+    }
+
+    buffer.push(rawLine);
+    depth += countJsonBraceDelta(rawLine);
+
+    if (depth !== 0) {
+      continue;
+    }
+
+    try {
+      const parsed = JSON.parse(buffer.join('\n'));
+      if (isOpenCodeVerboseModel(parsed)) {
+        models.push(parsed);
+      }
+    } catch {
+      // Ignore malformed verbose blocks and fall back to the plain id parser.
+    }
+
+    buffer = [];
+  }
+
+  return models;
+};
+
 const formatDateToken = (token: string): string => (
   `${token.slice(0, 4)}-${token.slice(4, 6)}-${token.slice(6, 8)}`
 );
@@ -155,6 +239,20 @@ const readOpenCodeModelParts = (id: string): { upstreamProvider: string; slug: s
   };
 };
 
+const readOpenCodeVerboseModelId = (model: OpenCodeVerboseModel): string | null => {
+  const id = readOptionalString(model.id);
+  if (!id) {
+    return null;
+  }
+
+  if (id.includes('/')) {
+    return id;
+  }
+
+  const upstreamProvider = readOptionalString(model.providerID);
+  return upstreamProvider ? `${upstreamProvider}/${id}` : id;
+};
+
 const labelForOpenCodeModelId = (id: string): string => {
   const fallbackLabel = OPENCODE_FALLBACK_MODELS.OPTIONS.find((option) => option.value === id)?.label;
   if (fallbackLabel) {
@@ -170,6 +268,52 @@ const descriptionForOpenCodeModelId = (id: string): string => {
   return upstreamProvider ? `${upstreamProvider} - ${id}` : id;
 };
 
+const readOpenCodeVariantEffort = (key: string, value: unknown): string | null => {
+  const variant = readObjectRecord(value);
+  return readOptionalString(variant?.reasoningEffort)
+    ?? readOptionalString(variant?.effort)
+    ?? key;
+};
+
+const readOpenCodeEffortValues = (
+  variants: OpenCodeVerboseModel['variants'],
+): NonNullable<ProviderModelOption['effort']>['values'] => {
+  const effortValues: NonNullable<ProviderModelOption['effort']>['values'] = [];
+  const seenValues = new Set<string>();
+
+  for (const [key, value] of Object.entries(variants ?? {})) {
+    const effort = readOpenCodeVariantEffort(key, value);
+    if (!effort || seenValues.has(effort)) {
+      continue;
+    }
+
+    seenValues.add(effort);
+    effortValues.push({ value: effort });
+  }
+
+  return effortValues;
+};
+
+const mapOpenCodeVerboseModel = (model: OpenCodeVerboseModel): ProviderModelOption | null => {
+  const value = readOpenCodeVerboseModelId(model);
+  if (!value) {
+    return null;
+  }
+
+  const effortValues = readOpenCodeEffortValues(model.variants);
+
+  return {
+    value,
+    label: readOptionalString(model.name) ?? labelForOpenCodeModelId(value),
+    description: descriptionForOpenCodeModelId(value),
+    effort: effortValues.length > 0
+      ? {
+          values: effortValues,
+        }
+      : undefined,
+  };
+};
+
 export const buildOpenCodeDefinitionFromIds = (ids: string[]): ProviderModelsDefinition => {
   const options: ProviderModelOption[] = ids.map((value) => ({
     value,
@@ -187,6 +331,36 @@ export const buildOpenCodeDefinitionFromIds = (ids: string[]): ProviderModelsDef
   };
 };
 
+export const buildOpenCodeDefinitionFromVerboseModels = (
+  models: OpenCodeVerboseModel[],
+): ProviderModelsDefinition => {
+  const options: ProviderModelOption[] = [];
+  const seenValues = new Set<string>();
+
+  for (const model of models) {
+    const mappedModel = mapOpenCodeVerboseModel(model);
+    if (!mappedModel || seenValues.has(mappedModel.value)) {
+      continue;
+    }
+
+    seenValues.add(mappedModel.value);
+    options.push(mappedModel);
+  }
+
+  if (options.length === 0) {
+    return OPENCODE_FALLBACK_MODELS;
+  }
+
+  const defaultValue = options.find((option) => option.value === OPENCODE_FALLBACK_MODELS.DEFAULT)?.value
+    ?? options[0]?.value
+    ?? OPENCODE_FALLBACK_MODELS.DEFAULT;
+
+  return {
+    OPTIONS: options,
+    DEFAULT: defaultValue,
+  };
+};
+
 const parseOpenCodeSessionModelValue = (rawModel: unknown): string | null => {
   if (typeof rawModel === 'string') {
     const trimmed = rawModel.trim();
@@ -214,7 +388,7 @@ const parseOpenCodeSessionModelValue = (rawModel: unknown): string | null => {
 };
 
 const runOpenCodeModelsCommand = (): Promise<string> => new Promise((resolve, reject) => {
-  const openCodeProcess = spawnFunction('opencode', ['models'], {
+  const openCodeProcess = spawnFunction('opencode', ['models', '--verbose'], {
     cwd: process.cwd(),
     env: { ...process.env },
   });
@@ -273,6 +447,11 @@ export class OpenCodeProviderModels implements IProviderModels {
   async getSupportedModels(): Promise<ProviderModelsDefinition> {
     try {
       const stdout = await runOpenCodeModelsCommand();
+      const verboseModels = parseOpenCodeVerboseModelsStdout(stdout);
+      if (verboseModels.length > 0) {
+        return buildOpenCodeDefinitionFromVerboseModels(verboseModels);
+      }
+
       const ids = parseOpenCodeModelsStdout(stdout);
       if (ids.length === 0) {
         return OPENCODE_FALLBACK_MODELS;

server/modules/providers/services/provider-capabilities.service.ts

@@ -21,6 +21,8 @@ type ProviderCapabilities = {
   supportsPermissionRequests: boolean;
   /** Whether the token-usage endpoint has data for this provider. */
   supportsTokenUsage: boolean;
+  /** Whether the provider runtime can accept model-level reasoning effort. */
+  supportsEffort: boolean;
 };
 
 /**
@@ -38,6 +40,7 @@ const PROVIDER_CAPABILITIES: Record<LLMProvider, ProviderCapabilities> = {
     supportsAbort: true,
     supportsPermissionRequests: true,
     supportsTokenUsage: true,
+    supportsEffort: true,
   },
   cursor: {
     provider: 'cursor',
@@ -47,6 +50,7 @@ const PROVIDER_CAPABILITIES: Record<LLMProvider, ProviderCapabilities> = {
     supportsAbort: true,
     supportsPermissionRequests: false,
     supportsTokenUsage: false,
+    supportsEffort: false,
   },
   codex: {
     provider: 'codex',
@@ -56,6 +60,7 @@ const PROVIDER_CAPABILITIES: Record<LLMProvider, ProviderCapabilities> = {
     supportsAbort: true,
     supportsPermissionRequests: false,
     supportsTokenUsage: true,
+    supportsEffort: true,
   },
   gemini: {
     provider: 'gemini',
@@ -65,6 +70,7 @@ const PROVIDER_CAPABILITIES: Record<LLMProvider, ProviderCapabilities> = {
     supportsAbort: true,
     supportsPermissionRequests: false,
     supportsTokenUsage: true,
+    supportsEffort: false,
   },
   opencode: {
     provider: 'opencode',
@@ -74,6 +80,7 @@ const PROVIDER_CAPABILITIES: Record<LLMProvider, ProviderCapabilities> = {
     supportsAbort: true,
     supportsPermissionRequests: false,
     supportsTokenUsage: true,
+    supportsEffort: true,
   },
 };
 

server/modules/providers/services/provider-models.service.ts

@@ -16,7 +16,7 @@ import type {
 import { readProviderSessionActiveModelChange } from '@/shared/utils.js';
 
 export const PROVIDER_MODELS_CACHE_TTL_MS = 3 * 24 * 60 * 60 * 1000;
-const PROVIDER_MODELS_CACHE_VERSION = 1;
+const PROVIDER_MODELS_CACHE_VERSION = 2;
 const UNCACHED_PROVIDERS = new Set<LLMProvider>(['claude', 'gemini']);
 
 type ProviderModelsServiceDependencies = {

server/modules/providers/tests/opencode-models.test.ts

@@ -2,8 +2,10 @@ import assert from 'node:assert/strict';
 import test from 'node:test';
 
 import {
+  buildOpenCodeDefinitionFromVerboseModels,
   buildOpenCodeDefinitionFromIds,
   parseOpenCodeModelsStdout,
+  parseOpenCodeVerboseModelsStdout,
 } from '@/modules/providers/list/opencode/opencode-models.provider.js';
 
 test('OpenCode models provider parses plain CLI output and removes duplicates', () => {
@@ -71,3 +73,63 @@ test('OpenCode models provider formats frontend labels from provider-prefixed id
     },
   ]);
 });
+
+test('OpenCode models provider maps verbose model variants to effort options', () => {
+  const models = parseOpenCodeVerboseModelsStdout(`
+opencode/deepseek-v4-flash-free
+{
+  "id": "deepseek-v4-flash-free",
+  "providerID": "opencode",
+  "name": "DeepSeek V4 Flash Free",
+  "variants": {
+    "low": {
+      "reasoningEffort": "low"
+    },
+    "high": {
+      "reasoningEffort": "high"
+    }
+  }
+}
+anthropic/claude-sonnet-5
+{
+  "id": "claude-sonnet-5",
+  "providerID": "anthropic",
+  "name": "Claude Sonnet 5",
+  "variants": {
+    "low": {
+      "effort": "low"
+    },
+    "max": {
+      "effort": "max"
+    }
+  }
+}
+`);
+
+  const definition = buildOpenCodeDefinitionFromVerboseModels(models);
+
+  assert.deepEqual(definition.OPTIONS, [
+    {
+      value: 'opencode/deepseek-v4-flash-free',
+      label: 'DeepSeek V4 Flash Free',
+      description: 'opencode - opencode/deepseek-v4-flash-free',
+      effort: {
+        values: [
+          { value: 'low' },
+          { value: 'high' },
+        ],
+      },
+    },
+    {
+      value: 'anthropic/claude-sonnet-5',
+      label: 'Claude Sonnet 5',
+      description: 'anthropic - anthropic/claude-sonnet-5',
+      effort: {
+        values: [
+          { value: 'low' },
+          { value: 'max' },
+        ],
+      },
+    },
+  ]);
+});

server/openai-codex.js

@@ -20,7 +20,6 @@ import { providerAuthService } from './modules/providers/services/provider-auth.
 import { providerModelsService } from './modules/providers/services/provider-models.service.js';
 import { createCompleteMessage, createNormalizedMessage } from './shared/utils.js';
 
-// Track active sessions
 const activeCodexSessions = new Map();
 
 function readUsageNumber(value) {
@@ -228,6 +227,7 @@ export async function queryCodex(command, options = {}, ws) {
     cwd,
     projectPath,
     model,
+    effort,
     permissionMode = 'default'
   } = options;
 
@@ -239,6 +239,12 @@ export async function queryCodex(command, options = {}, ws) {
 
   const workingDirectory = cwd || projectPath || process.cwd();
   const { sandboxMode, approvalPolicy } = mapPermissionModeToCodexOptions(permissionMode);
+  const catalog = (await providerModelsService.getProviderModels('codex')).models;
+  const selectedModel = catalog.OPTIONS.find((option) => option.value === resolvedModel) || null;
+  const allowedEfforts = selectedModel?.effort?.values?.map((value) => value.value) || [];
+  const resolvedEffort = typeof effort === 'string' && effort !== 'default' && allowedEfforts.includes(effort)
+    ? effort
+    : undefined;
 
   let codex;
   let thread;
@@ -248,19 +254,17 @@ export async function queryCodex(command, options = {}, ws) {
   const abortController = new AbortController();
 
   try {
-    // Initialize Codex SDK
     codex = new Codex();
 
-    // Thread options with sandbox and approval settings
     const threadOptions = {
       workingDirectory,
       skipGitRepoCheck: true,
       sandboxMode,
       approvalPolicy,
-      model: resolvedModel
+      model: resolvedModel,
+      modelReasoningEffort: resolvedEffort,
     };
 
-    // Start or resume thread
     if (sessionId) {
       thread = codex.resumeThread(sessionId, threadOptions);
     } else {
@@ -280,12 +284,10 @@ export async function queryCodex(command, options = {}, ws) {
       });
     };
 
-    // Existing sessions can be tracked immediately; new sessions are tracked after thread.started.
     if (capturedSessionId) {
       registerSession(capturedSessionId);
     }
 
-    // Execute with streaming
     const streamedTurn = await thread.runStreamed(command, {
       signal: abortController.signal
     });

server/opencode-cli.js

@@ -14,6 +14,14 @@ const spawnFunction = process.platform === 'win32' ? crossSpawn : spawn;
 
 const activeOpenCodeProcesses = new Map();
 
+function resolveOpenCodeEffort(model, effort, modelsDefinition) {
+  const selectedModel = modelsDefinition?.OPTIONS?.find((option) => option.value === model);
+  const allowedEfforts = selectedModel?.effort?.values?.map((value) => value.value) || [];
+  return typeof effort === 'string' && effort !== 'default' && allowedEfforts.includes(effort)
+    ? effort
+    : undefined;
+}
+
 function readOpenCodeSessionId(event) {
   if (!event || typeof event !== 'object') {
     return null;
@@ -84,7 +92,7 @@ function readOpenCodeTokenUsage(sessionId) {
 
 async function spawnOpenCode(command, options = {}, ws) {
   return new Promise((resolve, reject) => {
-    const { sessionId, projectPath, cwd, model, sessionSummary } = options;
+    const { sessionId, projectPath, cwd, model, effort, sessionSummary } = options;
     const workingDir = cwd || projectPath || process.cwd();
     const processKey = sessionId || Date.now().toString();
     let capturedSessionId = sessionId || null;
@@ -192,7 +200,15 @@ async function spawnOpenCode(command, options = {}, ws) {
       }
     };
 
-    void providerModelsService.resolveResumeModel('opencode', sessionId, model).then((resolvedModel) => {
+    void providerModelsService.resolveResumeModel('opencode', sessionId, model).then(async (resolvedModel) => {
+      let effortModels = null;
+      try {
+        effortModels = (await providerModelsService.getProviderModels('opencode')).models;
+      } catch (error) {
+        console.warn('[OpenCode] Unable to load provider models for effort validation:', error);
+      }
+
+      const resolvedEffort = resolveOpenCodeEffort(resolvedModel, effort, effortModels);
       const args = ['run', '--format', 'json'];
       // OpenCode's `run` command owns workspace selection through `--dir`.
       // Relying on the child-process cwd alone is not enough on Linux, where
@@ -204,6 +220,9 @@ async function spawnOpenCode(command, options = {}, ws) {
       if (resolvedModel) {
         args.push('--model', resolvedModel);
       }
+      if (resolvedEffort) {
+        args.push('--variant', resolvedEffort);
+      }
       if (command && command.trim()) {
         args.push(command.trim());
       }

server/routes/agent.js

@@ -646,12 +646,17 @@ class ResponseCollector {
  *
  * @param {string} model - (Optional) Model identifier for providers.
  *
- *                        Claude models: 'sonnet' (default), 'opus', 'haiku', 'opusplan', 'sonnet[1m]', 'fable'
+ *                        Claude models: 'default', 'sonnet', 'opus', 'haiku', 'sonnet[1m]', 'opus[1m]', 'fable'
  *                        Cursor models: 'gpt-5' (default), 'gpt-5.2', 'gpt-5.2-high', 'sonnet-4.5', 'opus-4.5',
  *                                       'gemini-3-pro', 'composer-1', 'auto', 'gpt-5.1', 'gpt-5.1-high',
  *                                       'gpt-5.1-codex', 'gpt-5.1-codex-high', 'gpt-5.1-codex-max',
  *                                       'gpt-5.1-codex-max-high', 'opus-4.1', 'grok', and thinking variants
- *                        Codex models: 'gpt-5.2' (default), 'gpt-5.1-codex-max', 'o3', 'o4-mini'
+ *                        Codex models: 'gpt-5.4' (default), 'gpt-5.5', 'gpt-5.4-mini'
+ *
+ * @param {string} effort - (Optional) Reasoning effort for providers/models that support it.
+ *                          Claude supports: 'low', 'medium', 'high', 'xhigh', 'max' depending on model.
+ *                          Codex supports: 'low', 'medium', 'high', 'xhigh'.
+ *                          'default' or omission lets the provider decide.
  *
  * @param {boolean} cleanup - (Optional) Auto-cleanup project directory after completion.
  *                           Default: true
@@ -844,6 +849,9 @@ class ResponseCollector {
  */
 router.post('/', validateExternalApiKey, async (req, res) => {
   const { githubUrl, projectPath, message, provider = 'claude', model, githubToken, branchName, sessionId } = req.body;
+  const effort = typeof req.body.effort === 'string' && req.body.effort.trim()
+    ? req.body.effort.trim()
+    : undefined;
 
   // Parse stream and cleanup as booleans (handle string "true"/"false" from curl)
   const stream = req.body.stream === undefined ? true : (req.body.stream === true || req.body.stream === 'true');
@@ -954,6 +962,7 @@ router.post('/', validateExternalApiKey, async (req, res) => {
         cwd: finalProjectPath,
         sessionId: sessionId || null,
         model: model,
+        effort,
         permissionMode: 'bypassPermissions' // Bypass all permissions for API calls
       }, writer);
 
@@ -975,6 +984,7 @@ router.post('/', validateExternalApiKey, async (req, res) => {
         cwd: finalProjectPath,
         sessionId: sessionId || null,
         model: model || codexModels.DEFAULT,
+        effort,
         permissionMode: 'bypassPermissions'
       }, writer);
     } else if (provider === 'gemini') {
@@ -994,7 +1004,8 @@ router.post('/', validateExternalApiKey, async (req, res) => {
         projectPath: finalProjectPath,
         cwd: finalProjectPath,
         sessionId: sessionId || null,
-        model: model || opencodeModels.DEFAULT
+        model: model || opencodeModels.DEFAULT,
+        effort
       }, writer);
     }
 

server/shared/types.ts

@@ -74,6 +74,13 @@ export type ProviderModelOption = {
   value: string;
   label: string;
   description?: string;
+  effort?: {
+    default?: string;
+    values: {
+      value: string;
+      description?: string;
+    }[];
+  };
 };
 
 /**

src/components/chat/constants/providerEffort.ts

@@ -0,0 +1,13 @@
+import type { LLMProvider, ProviderModelOption } from '../../../types/app';
+
+export const DEFAULT_EFFORT_VALUE = 'default';
+
+export const FALLBACK_PROVIDER_EFFORT_VALUES: Partial<Record<LLMProvider, readonly string[]>> = {
+  claude: ['low', 'medium', 'high', 'xhigh', 'max'],
+  codex: ['low', 'medium', 'high', 'xhigh'],
+  opencode: ['none', 'low', 'medium', 'high', 'xhigh', 'max'],
+};
+
+export const toProviderEffortOptions = (
+  values: readonly string[],
+): NonNullable<ProviderModelOption['effort']>['values'] => values.map((value) => ({ value }));

src/components/chat/hooks/useChatComposerState.ts

@@ -34,9 +34,11 @@ interface UseChatComposerStateArgs {
   provider: LLMProvider;
   permissionMode: PermissionMode | string;
   cyclePermissionMode: () => void;
+  resolvePermissionModeForProvider: (provider: LLMProvider, requestedMode: PermissionMode | string) => PermissionMode;
   cursorModel: string;
   claudeModel: string;
   codexModel: string;
+  currentProviderEffort: string;
   geminiModel: string;
   opencodeModel: string;
   isLoading: boolean;
@@ -168,9 +170,11 @@ export function useChatComposerState({
   provider,
   permissionMode,
   cyclePermissionMode,
+  resolvePermissionModeForProvider,
   cursorModel,
   claudeModel,
   codexModel,
+  currentProviderEffort,
   geminiModel,
   opencodeModel,
   isLoading,
@@ -728,8 +732,9 @@ export function useChatComposerState({
             : provider === 'gemini'
               ? geminiModel
               : provider === 'opencode'
-                ? opencodeModel
+              ? opencodeModel
-                : claudeModel;
+              : claudeModel;
+      const effort = currentProviderEffort;
 
       // One message shape for every provider. The backend resolves the
       // provider, project path, and provider-native resume id from the
@@ -740,9 +745,8 @@ export function useChatComposerState({
         content: messageContent,
         options: {
           model,
-          // Codex has no plan mode; downgrade rather than sending an
+          effort,
-          // unsupported value to its runtime.
+          permissionMode: resolvePermissionModeForProvider(provider, permissionMode),
-          permissionMode: provider === 'codex' && permissionMode === 'plan' ? 'default' : permissionMode,
           toolsSettings,
           skipPermissions: toolsSettings?.skipPermissions || false,
           sessionSummary,
@@ -769,6 +773,7 @@ export function useChatComposerState({
       attachedImages,
       claudeModel,
       codexModel,
+      currentProviderEffort,
       currentSessionId,
       cursorModel,
       executeCommand,
@@ -779,6 +784,7 @@ export function useChatComposerState({
       onSessionEstablished,
       permissionMode,
       provider,
+      resolvePermissionModeForProvider,
       resetCommandMenuState,
       scrollToBottom,
       selectedProject,

src/components/chat/hooks/useChatProviderState.ts

@@ -1,22 +1,31 @@
-import { useCallback, useEffect, useRef, useState } from 'react';
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+
 import { authenticatedFetch } from '../../../utils/api';
 import type { PendingPermissionRequest, PermissionMode } from '../types/types';
 import type {
   ProjectSession,
   LLMProvider,
   Project,
+  ProviderModelOption,
   ProviderModelsCacheInfo,
   ProviderModelsDefinition,
 } from '../../../types/app';
+import {
+  DEFAULT_EFFORT_VALUE,
+  FALLBACK_PROVIDER_EFFORT_VALUES,
+  toProviderEffortOptions,
+} from '../constants/providerEffort';
 
 const FALLBACK_DEFAULT_MODEL: Record<LLMProvider, string> = {
-  claude: 'opus',
+  claude: 'default',
   cursor: 'gpt-5.3-codex',
   codex: 'gpt-5.4',
   gemini: 'gemini-3.1-pro-preview',
   opencode: 'anthropic/claude-sonnet-4-5',
 };
 
+const PROVIDERS: LLMProvider[] = ['claude', 'cursor', 'codex', 'gemini', 'opencode'];
+
 /**
  * Fallback permission-mode matrix used only until the backend capability
  * matrix (`GET /api/providers/capabilities`) has loaded. The backend is the
@@ -39,6 +48,7 @@ type ProviderCapabilities = {
   supportsAbort: boolean;
   supportsPermissionRequests: boolean;
   supportsTokenUsage: boolean;
+  supportsEffort?: boolean;
 };
 
 type ProviderCapabilitiesApiResponse = {
@@ -72,7 +82,7 @@ type ChangeActiveModelApiResponse = {
   };
 };
 
-export function useChatProviderState({ selectedSession, selectedProject }: UseChatProviderStateArgs) {
+export function useChatProviderState({ selectedSession, selectedProject: _selectedProject }: UseChatProviderStateArgs) {
   const [permissionMode, setPermissionMode] = useState<PermissionMode>('default');
   const [pendingPermissionRequests, setPendingPermissionRequests] = useState<PendingPermissionRequest[]>([]);
   const [provider, setProvider] = useState<LLMProvider>(() => {
@@ -87,6 +97,12 @@ export function useChatProviderState({ selectedSession, selectedProject }: UseCh
   const [codexModel, setCodexModel] = useState<string>(() => {
     return localStorage.getItem('codex-model') || FALLBACK_DEFAULT_MODEL.codex;
   });
+  const [providerEfforts, setProviderEfforts] = useState<Partial<Record<LLMProvider, string>>>(() => {
+    return PROVIDERS.reduce<Partial<Record<LLMProvider, string>>>((acc, targetProvider) => {
+      acc[targetProvider] = localStorage.getItem(`${targetProvider}-effort`) || DEFAULT_EFFORT_VALUE;
+      return acc;
+    }, {});
+  });
   const [geminiModel, setGeminiModel] = useState<string>(() => {
     return localStorage.getItem('gemini-model') || FALLBACK_DEFAULT_MODEL.gemini;
   });
@@ -145,8 +161,16 @@ export function useChatProviderState({ selectedSession, selectedProject }: UseCh
     localStorage.setItem('opencode-model', model);
   }, []);
 
+  const setStoredProviderEffort = useCallback((targetProvider: LLMProvider, effort: string) => {
+    setProviderEfforts((previous) => (
+      previous[targetProvider] === effort
+        ? previous
+        : { ...previous, [targetProvider]: effort }
+    ));
+    localStorage.setItem(`${targetProvider}-effort`, effort);
+  }, []);
+
   const loadProviderModels = useCallback(async (options: { bypassCache?: boolean } = {}) => {
-    const providers: LLMProvider[] = ['claude', 'cursor', 'codex', 'gemini', 'opencode'];
     const requestId = providerModelsRequestIdRef.current + 1;
     providerModelsRequestIdRef.current = requestId;
     const isHardRefresh = options.bypassCache === true;
@@ -159,7 +183,7 @@ export function useChatProviderState({ selectedSession, selectedProject }: UseCh
 
     try {
       const results = await Promise.all(
-        providers.map(async (p) => {
+        PROVIDERS.map(async (p) => {
           const params = new URLSearchParams();
           if (options.bypassCache) {
             params.set('bypassCache', 'true');
@@ -183,7 +207,7 @@ export function useChatProviderState({ selectedSession, selectedProject }: UseCh
       const nextCatalog: Partial<Record<LLMProvider, ProviderModelsDefinition>> = {};
       const nextCacheCatalog: Partial<Record<LLMProvider, ProviderModelsCacheInfo>> = {};
 
-      providers.forEach((p, i) => {
+      PROVIDERS.forEach((p, i) => {
         const entry = results[i];
         if (!entry) {
           return;
@@ -244,6 +268,23 @@ export function useChatProviderState({ selectedSession, selectedProject }: UseCh
     return FALLBACK_PERMISSION_MODES[targetProvider] ?? ['default'];
   }, [providerCapabilities]);
 
+  const getDefaultPermissionModeForProvider = useCallback((targetProvider: LLMProvider): PermissionMode => {
+    const modes = getPermissionModesForProvider(targetProvider);
+    const capabilityDefault = providerCapabilities?.[targetProvider]?.defaultPermissionMode as PermissionMode | undefined;
+    if (capabilityDefault && modes.includes(capabilityDefault)) {
+      return capabilityDefault;
+    }
+    return modes[0] ?? 'default';
+  }, [getPermissionModesForProvider, providerCapabilities]);
+
+  const getSupportsEffortForProvider = useCallback((targetProvider: LLMProvider): boolean => {
+    const capabilitySupport = providerCapabilities?.[targetProvider]?.supportsEffort;
+    if (typeof capabilitySupport === 'boolean') {
+      return capabilitySupport;
+    }
+    return Boolean(FALLBACK_PROVIDER_EFFORT_VALUES[targetProvider]?.length);
+  }, [providerCapabilities]);
+
   const pickStoredOrCurrent = (
     storageKey: string,
     current: string,
@@ -259,6 +300,70 @@ export function useChatProviderState({ selectedSession, selectedProject }: UseCh
     return def.DEFAULT;
   };
 
+  const getModelOption = useCallback((
+    targetProvider: LLMProvider,
+    model: string,
+  ): ProviderModelOption | null => {
+    const definition = providerModelCatalog[targetProvider];
+    if (!definition) {
+      return null;
+    }
+
+    return definition.OPTIONS.find((option) => option.value === model) ?? null;
+  }, [providerModelCatalog]);
+
+  const getEffortOptionsForModel = useCallback((
+    targetProvider: LLMProvider,
+    model: string,
+  ): NonNullable<ProviderModelOption['effort']>['values'] => {
+    if (!getSupportsEffortForProvider(targetProvider)) {
+      return [];
+    }
+
+    const option = getModelOption(targetProvider, model);
+    if (option) {
+      return option.effort?.values ?? [];
+    }
+
+    return toProviderEffortOptions(FALLBACK_PROVIDER_EFFORT_VALUES[targetProvider] ?? []);
+  }, [getModelOption, getSupportsEffortForProvider]);
+
+  const getAllowedEffortValues = useCallback((
+    targetProvider: LLMProvider,
+    model: string,
+  ): string[] => (
+    getEffortOptionsForModel(targetProvider, model).map((value) => value.value)
+  ), [getEffortOptionsForModel]);
+
+  const reconcileStoredEffort = useCallback((
+    targetProvider: LLMProvider,
+    model: string,
+    currentEffort: string,
+  ): string => {
+    const allowedValues = getAllowedEffortValues(targetProvider, model);
+    if (allowedValues.length === 0) {
+      return DEFAULT_EFFORT_VALUE;
+    }
+
+    if (currentEffort === DEFAULT_EFFORT_VALUE || !currentEffort) {
+      return DEFAULT_EFFORT_VALUE;
+    }
+
+    if (allowedValues.includes(currentEffort)) {
+      return currentEffort;
+    }
+
+    return DEFAULT_EFFORT_VALUE;
+  }, [getAllowedEffortValues]);
+
+  const providerModels = useMemo<Record<LLMProvider, string>>(() => ({
+    claude: claudeModel,
+    cursor: cursorModel,
+    codex: codexModel,
+    gemini: geminiModel,
+    opencode: opencodeModel,
+  }), [claudeModel, cursorModel, codexModel, geminiModel, opencodeModel]);
+
   useEffect(() => {
     const claude = providerModelCatalog.claude;
     if (claude) {
@@ -324,6 +429,27 @@ export function useChatProviderState({ selectedSession, selectedProject }: UseCh
     }
   }, [providerModelCatalog.opencode, opencodeModel]);
 
+  useEffect(() => {
+    const nextEfforts: Partial<Record<LLMProvider, string>> = {};
+    let hasUpdates = false;
+
+    for (const targetProvider of PROVIDERS) {
+      const currentEffort = providerEfforts[targetProvider] ?? DEFAULT_EFFORT_VALUE;
+      const nextEffort = reconcileStoredEffort(targetProvider, providerModels[targetProvider], currentEffort);
+      if (nextEffort === currentEffort) {
+        continue;
+      }
+
+      nextEfforts[targetProvider] = nextEffort;
+      localStorage.setItem(`${targetProvider}-effort`, nextEffort);
+      hasUpdates = true;
+    }
+
+    if (hasUpdates) {
+      setProviderEfforts((previous) => ({ ...previous, ...nextEfforts }));
+    }
+  }, [providerEfforts, providerModels, reconcileStoredEffort]);
+
   useEffect(() => {
     if (!selectedSession?.id) {
       return;
@@ -331,8 +457,12 @@ export function useChatProviderState({ selectedSession, selectedProject }: UseCh
 
     const savedMode = localStorage.getItem(`permissionMode-${selectedSession.id}`) as PermissionMode | null;
     const validModes = getPermissionModesForProvider(provider);
-    setPermissionMode(savedMode && validModes.includes(savedMode) ? savedMode : 'default');
+    setPermissionMode(
-  }, [selectedSession?.id, provider, getPermissionModesForProvider]);
+      savedMode && validModes.includes(savedMode)
+        ? savedMode
+        : getDefaultPermissionModeForProvider(provider),
+    );
+  }, [selectedSession?.id, provider, getDefaultPermissionModeForProvider, getPermissionModesForProvider]);
 
   useEffect(() => {
     if (!selectedSession?.__provider || selectedSession.__provider === provider) {
@@ -386,6 +516,16 @@ export function useChatProviderState({ selectedSession, selectedProject }: UseCh
     }
   }, [permissionMode, provider, selectedSession?.id, getPermissionModesForProvider]);
 
+  const resolvePermissionModeForProvider = useCallback((
+    targetProvider: LLMProvider,
+    requestedMode: PermissionMode | string,
+  ): PermissionMode => {
+    const validModes = getPermissionModesForProvider(targetProvider);
+    return validModes.includes(requestedMode as PermissionMode)
+      ? requestedMode as PermissionMode
+      : getDefaultPermissionModeForProvider(targetProvider);
+  }, [getDefaultPermissionModeForProvider, getPermissionModesForProvider]);
+
   const selectProviderModel = useCallback(async (
     targetProvider: LLMProvider,
     model: string,
@@ -421,6 +561,17 @@ export function useChatProviderState({ selectedSession, selectedProject }: UseCh
     };
   }, [setStoredProviderModel]);
 
+  const currentProviderEffortOptions = useMemo(() => {
+    return getEffortOptionsForModel(provider, providerModels[provider]);
+  }, [getEffortOptionsForModel, provider, providerModels]);
+  const currentProviderEffort = useMemo(() => {
+    return reconcileStoredEffort(
+      provider,
+      providerModels[provider],
+      providerEfforts[provider] ?? DEFAULT_EFFORT_VALUE,
+    );
+  }, [provider, providerEfforts, providerModels, reconcileStoredEffort]);
+
   return {
     provider,
     setProvider,
@@ -430,6 +581,8 @@ export function useChatProviderState({ selectedSession, selectedProject }: UseCh
     setClaudeModel,
     codexModel,
     setCodexModel,
+    currentProviderEffort,
+    currentProviderEffortOptions,
     geminiModel,
     setGeminiModel,
     opencodeModel,
@@ -445,5 +598,7 @@ export function useChatProviderState({ selectedSession, selectedProject }: UseCh
     providerModelsRefreshing,
     hardRefreshProviderModels: () => loadProviderModels({ bypassCache: true }),
     selectProviderModel,
+    setStoredProviderEffort,
+    resolvePermissionModeForProvider,
   };
 }

src/components/chat/view/ChatInterface.tsx

@@ -17,7 +17,6 @@ import ChatMessagesPane from './subcomponents/ChatMessagesPane';
 import ChatComposer from './subcomponents/ChatComposer';
 import CommandResultModal from './subcomponents/CommandResultModal';
 
-
 function ChatInterface({
   selectedProject,
   selectedSession,
@@ -70,6 +69,8 @@ function ChatInterface({
     setClaudeModel,
     codexModel,
     setCodexModel,
+    currentProviderEffort,
+    currentProviderEffortOptions,
     geminiModel,
     setGeminiModel,
     opencodeModel,
@@ -84,6 +85,8 @@ function ChatInterface({
     providerModelsRefreshing,
     hardRefreshProviderModels,
     selectProviderModel,
+    setStoredProviderEffort,
+    resolvePermissionModeForProvider,
   } = useChatProviderState({
     selectedSession,
     selectedProject,
@@ -197,6 +200,7 @@ function ChatInterface({
     cursorModel,
     claudeModel,
     codexModel,
+    currentProviderEffort,
     geminiModel,
     opencodeModel,
     isLoading: isProcessing,
@@ -213,6 +217,7 @@ function ChatInterface({
     addMessage,
     setIsUserScrolledUp,
     setPendingPermissionRequests,
+    resolvePermissionModeForProvider,
   });
 
   // On WebSocket reconnect, re-fetch the current session's messages from the
@@ -383,6 +388,9 @@ function ChatInterface({
           onAbortSession={handleAbortSession}
           permissionMode={permissionMode}
           onModeSwitch={cyclePermissionMode}
+          effort={currentProviderEffort}
+          availableEffortOptions={currentProviderEffortOptions}
+          onSelectEffort={(nextEffort) => setStoredProviderEffort(provider, nextEffort)}
           tokenBudget={tokenBudget}
           onShowTokenUsage={showCostModal}
           slashCommandsCount={slashCommandsCount}

src/components/chat/view/subcomponents/ChatComposer.tsx

@@ -1,6 +1,6 @@
 import { useTranslation } from 'react-i18next';
-import { useMemo } from 'react';
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
-import { useCallback, useEffect, useRef, useState } from 'react';
+import { createPortal } from 'react-dom';
 import type {
   ChangeEvent,
   ClipboardEvent,
@@ -11,12 +11,13 @@ import type {
   RefObject,
   TouchEvent,
 } from 'react';
-import { ImageIcon, MessageSquareIcon, XIcon, Loader2 } from 'lucide-react';
+import { ImageIcon, MessageSquareIcon, XIcon, Loader2, ChevronDown, Check } from 'lucide-react';
 
 import { useVoiceInput } from '../../hooks/useVoiceInput';
 import { useVoiceAvailable } from '../../hooks/useVoiceAvailable';
 import type { SessionActivity } from '../../../../hooks/useSessionProtection';
 import type { PendingPermissionRequest, PermissionMode } from '../../types/types';
+import type { ProviderModelOption } from '../../../../types/app';
 import {
   PromptInput,
   PromptInputHeader,
@@ -62,6 +63,9 @@ interface ChatComposerProps {
   onAbortSession: () => void;
   permissionMode: PermissionMode | string;
   onModeSwitch: () => void;
+  effort: string;
+  availableEffortOptions: NonNullable<ProviderModelOption['effort']>['values'];
+  onSelectEffort: (effort: string) => void;
   tokenBudget: Record<string, unknown> | null;
   onShowTokenUsage: () => void;
   slashCommandsCount: number;
@@ -114,6 +118,9 @@ export default function ChatComposer({
   onAbortSession,
   permissionMode,
   onModeSwitch,
+  effort,
+  availableEffortOptions,
+  onSelectEffort,
   tokenBudget,
   onShowTokenUsage,
   slashCommandsCount,
@@ -167,7 +174,7 @@ export default function ChatComposer({
       left: textareaRect ? textareaRect.left : 16,
       bottom: textareaRect ? window.innerHeight - textareaRect.top + 8 : 90,
     };
-  }, [input, isCommandMenuOpen, textareaRef]);
+  }, [isCommandMenuOpen, textareaRef]);
 
   // Voice state is hosted here (not in the mic button) so the main Send button can stop
   // recording and send the transcript in one tap, the way the mic button drops it in the box.
@@ -189,6 +196,67 @@ export default function ChatComposer({
   );
   const isRecording = voiceState === 'recording';
   const isTranscribing = voiceState === 'transcribing';
+  const [isEffortDropdownOpen, setIsEffortDropdownOpen] = useState(false);
+  const effortDropdownRef = useRef<HTMLDivElement | null>(null);
+  const effortDropdownMenuRef = useRef<HTMLDivElement | null>(null);
+  const effortDropdownButtonRef = useRef<HTMLButtonElement | null>(null);
+  const [effortDropdownPosition, setEffortDropdownPosition] = useState<{
+    left: number;
+    top: number;
+    maxHeight: number;
+  } | null>(null);
+  const effortOptions = useMemo(
+    () => [{ value: 'default' }, ...availableEffortOptions],
+    [availableEffortOptions],
+  );
+  const selectedEffortLabel = effort === 'default' ? 'Default' : effort;
+  const updateEffortDropdownPosition = useCallback(() => {
+    const rect = effortDropdownButtonRef.current?.getBoundingClientRect();
+    if (!rect) {
+      return;
+    }
+
+    setEffortDropdownPosition({
+      left: rect.left,
+      top: rect.top - 8,
+      maxHeight: Math.max(96, rect.top - 16),
+    });
+  }, []);
+
+  useEffect(() => {
+    if (!isEffortDropdownOpen) return;
+
+    const handlePointerDown = (event: PointerEvent) => {
+      const target = event.target as Node;
+      if (
+        !effortDropdownRef.current?.contains(target)
+        && !effortDropdownMenuRef.current?.contains(target)
+      ) {
+        setIsEffortDropdownOpen(false);
+      }
+    };
+
+    const handleKeyDown = (event: globalThis.KeyboardEvent) => {
+      if (event.key === 'Escape') {
+        event.preventDefault();
+        event.stopPropagation();
+        setIsEffortDropdownOpen(false);
+      }
+    };
+
+    document.addEventListener('pointerdown', handlePointerDown);
+    window.addEventListener('resize', updateEffortDropdownPosition);
+    window.addEventListener('scroll', updateEffortDropdownPosition, true);
+    window.addEventListener('keydown', handleKeyDown, { capture: true });
+    updateEffortDropdownPosition();
+
+    return () => {
+      document.removeEventListener('pointerdown', handlePointerDown);
+      window.removeEventListener('resize', updateEffortDropdownPosition);
+      window.removeEventListener('scroll', updateEffortDropdownPosition, true);
+      window.removeEventListener('keydown', handleKeyDown, { capture: true });
+    };
+  }, [isEffortDropdownOpen, updateEffortDropdownPosition]);
 
   // Detect if the AskUserQuestion interactive panel is active
   const hasQuestionPanel = pendingPermissionRequests.some(
@@ -376,6 +444,70 @@ export default function ChatComposer({
               </div>
             </button>
 
+            {availableEffortOptions.length > 0 && (
+              <div ref={effortDropdownRef} className="relative">
+                <button
+                  ref={effortDropdownButtonRef}
+                  type="button"
+                  onClick={() => {
+                    updateEffortDropdownPosition();
+                    setIsEffortDropdownOpen((current) => !current);
+                  }}
+                  className="flex h-8 items-center gap-1.5 rounded-lg border border-border/60 bg-muted/40 px-2 text-xs font-medium text-foreground transition-all duration-200 hover:bg-muted"
+                  aria-haspopup="menu"
+                  aria-expanded={isEffortDropdownOpen}
+                  aria-label="Select reasoning effort"
+                  title="Select reasoning effort"
+                >
+                  <span className="hidden text-[11px] text-muted-foreground sm:inline">Effort</span>
+                  <span className="max-w-16 truncate capitalize sm:max-w-20">{selectedEffortLabel}</span>
+                  <ChevronDown className={`h-3 w-3 text-muted-foreground transition-transform ${isEffortDropdownOpen ? 'rotate-180' : ''}`} />
+                </button>
+
+                {isEffortDropdownOpen && effortDropdownPosition && createPortal(
+                  <div
+                    ref={effortDropdownMenuRef}
+                    className="fixed z-[100] min-w-36 overflow-y-auto rounded-lg border border-border bg-card p-1 shadow-lg"
+                    style={{
+                      left: effortDropdownPosition.left,
+                      top: effortDropdownPosition.top,
+                      maxHeight: effortDropdownPosition.maxHeight,
+                      transform: 'translateY(-100%)',
+                    }}
+                    role="menu"
+                  >
+                    {effortOptions.map((option) => {
+                      const isSelected = option.value === effort;
+                      const label = option.value === 'default' ? 'Default' : option.value;
+                      return (
+                        <button
+                          key={option.value}
+                          type="button"
+                          role="menuitemradio"
+                          aria-checked={isSelected}
+                          onClick={() => {
+                            onSelectEffort(option.value);
+                            setIsEffortDropdownOpen(false);
+                          }}
+                          className={`flex w-full items-center gap-2 rounded px-2 py-1.5 text-left text-xs capitalize transition-colors ${
+                            isSelected
+                              ? 'bg-accent text-foreground'
+                              : 'text-muted-foreground hover:bg-accent/70 hover:text-foreground'
+                          }`}
+                        >
+                          <span className="flex h-3 w-3 items-center justify-center">
+                            {isSelected && <Check className="h-3 w-3 text-primary" />}
+                          </span>
+                          <span>{label}</span>
+                        </button>
+                      );
+                    })}
+                  </div>,
+                  document.body,
+                )}
+              </div>
+            )}
+
             <TokenUsageSummary usage={tokenBudget} onClick={onShowTokenUsage} />
 
             <PromptInputButton

src/components/chat/view/subcomponents/CommandResultModal.tsx

@@ -263,7 +263,6 @@ function ModelsContent({
     const availableModels = Array.isArray(data?.availableModels) ? data.availableModels : [];
     return availableModels.map((model) => ({ value: model, label: model }));
   }, [data, liveDefinition]);
-
   const filteredOptions = useMemo(() => {
     const normalized = query.trim().toLowerCase();
     if (!normalized) {

src/types/app.ts

@@ -4,6 +4,13 @@ export type ProviderModelOption = {
   value: string;
   label: string;
   description?: string;
+  effort?: {
+    default?: string;
+    values: {
+      value: string;
+      description?: string;
+    }[];
+  };
 };
 
 export type ProviderModelsDefinition = {