feat: add Claude Opus 4.6 and GPT-5.3-Codex model support

CLAUDE.md

@@ -161,7 +161,7 @@ Use `resolveModelString()` from `@automaker/model-resolver` to convert model ali
 
 - `haiku` → `claude-haiku-4-5`
 - `sonnet` → `claude-sonnet-4-20250514`
-- `opus` → `claude-opus-4-5-20251101`
+- `opus` → `claude-opus-4-6`
 
 ## Environment Variables
 

apps/server/package.json

@@ -24,7 +24,7 @@
     "test:unit": "vitest run tests/unit"
   },
   "dependencies": {
-    "@anthropic-ai/claude-agent-sdk": "0.1.76",
+    "@anthropic-ai/claude-agent-sdk": "0.2.32",
     "@automaker/dependency-resolver": "1.0.0",
     "@automaker/git-utils": "1.0.0",
     "@automaker/model-resolver": "1.0.0",
@@ -34,7 +34,7 @@
     "@automaker/utils": "1.0.0",
     "@github/copilot-sdk": "^0.1.16",
     "@modelcontextprotocol/sdk": "1.25.2",
-    "@openai/codex-sdk": "^0.77.0",
+    "@openai/codex-sdk": "^0.98.0",
     "cookie-parser": "1.4.7",
     "cors": "2.8.5",
     "dotenv": "17.2.3",

apps/server/src/lib/sdk-options.ts

@@ -253,11 +253,27 @@ function buildMcpOptions(config: CreateSdkOptionsConfig): McpOptions {
 /**
  * Build thinking options for SDK configuration.
  * Converts ThinkingLevel to maxThinkingTokens for the Claude SDK.
+ * For adaptive thinking (Opus 4.6), omits maxThinkingTokens to let the model
+ * decide its own reasoning depth.
  *
  * @param thinkingLevel - The thinking level to convert
- * @returns Object with maxThinkingTokens if thinking is enabled
+ * @returns Object with maxThinkingTokens if thinking is enabled with a budget
  */
 function buildThinkingOptions(thinkingLevel?: ThinkingLevel): Partial<Options> {
+  if (!thinkingLevel || thinkingLevel === 'none') {
+    return {};
+  }
+
+  // Adaptive thinking (Opus 4.6): don't set maxThinkingTokens
+  // The model will use adaptive thinking by default
+  if (thinkingLevel === 'adaptive') {
+    logger.debug(
+      `buildThinkingOptions: thinkingLevel="adaptive" -> no maxThinkingTokens (model decides)`
+    );
+    return {};
+  }
+
+  // Manual budget-based thinking for Haiku/Sonnet
   const maxThinkingTokens = getThinkingTokenBudget(thinkingLevel);
   logger.debug(
     `buildThinkingOptions: thinkingLevel="${thinkingLevel}" -> maxThinkingTokens=${maxThinkingTokens}`

apps/server/src/providers/claude-provider.ts

@@ -219,8 +219,11 @@ export class ClaudeProvider extends BaseProvider {
     // claudeCompatibleProvider takes precedence over claudeApiProfile
     const providerConfig = claudeCompatibleProvider || claudeApiProfile;
 
-    // Convert thinking level to token budget
-    const maxThinkingTokens = getThinkingTokenBudget(thinkingLevel);
+    // Build thinking configuration
+    // Adaptive thinking (Opus 4.6): don't set maxThinkingTokens, model uses adaptive by default
+    // Manual thinking (Haiku/Sonnet): use budget_tokens
+    const maxThinkingTokens =
+      thinkingLevel === 'adaptive' ? undefined : getThinkingTokenBudget(thinkingLevel);
 
     // Build Claude SDK options
     const sdkOptions: Options = {
@@ -349,13 +352,13 @@ export class ClaudeProvider extends BaseProvider {
   getAvailableModels(): ModelDefinition[] {
     const models = [
       {
-        id: 'claude-opus-4-5-20251101',
-        name: 'Claude Opus 4.5',
-        modelString: 'claude-opus-4-5-20251101',
+        id: 'claude-opus-4-6',
+        name: 'Claude Opus 4.6',
+        modelString: 'claude-opus-4-6',
         provider: 'anthropic',
-        description: 'Most capable Claude model',
+        description: 'Most capable Claude model with adaptive thinking',
         contextWindow: 200000,
-        maxOutputTokens: 16000,
+        maxOutputTokens: 128000,
         supportsVision: true,
         supportsTools: true,
         tier: 'premium' as const,

apps/server/src/providers/codex-models.ts

@@ -18,27 +18,39 @@ const MAX_OUTPUT_16K = 16000;
  */
 export const CODEX_MODELS: ModelDefinition[] = [
   // ========== Recommended Codex Models ==========
+  {
+    id: CODEX_MODEL_MAP.gpt53Codex,
+    name: 'GPT-5.3-Codex',
+    modelString: CODEX_MODEL_MAP.gpt53Codex,
+    provider: 'openai',
+    description: 'Latest frontier agentic coding model.',
+    contextWindow: CONTEXT_WINDOW_256K,
+    maxOutputTokens: MAX_OUTPUT_32K,
+    supportsVision: true,
+    supportsTools: true,
+    tier: 'premium' as const,
+    default: true,
+    hasReasoning: true,
+  },
   {
     id: CODEX_MODEL_MAP.gpt52Codex,
     name: 'GPT-5.2-Codex',
     modelString: CODEX_MODEL_MAP.gpt52Codex,
     provider: 'openai',
-    description:
-      'Most advanced agentic coding model for complex software engineering (default for ChatGPT users).',
+    description: 'Frontier agentic coding model.',
     contextWindow: CONTEXT_WINDOW_256K,
     maxOutputTokens: MAX_OUTPUT_32K,
     supportsVision: true,
     supportsTools: true,
     tier: 'premium' as const,
-    default: true,
     hasReasoning: true,
   },
   {
     id: CODEX_MODEL_MAP.gpt51CodexMax,
     name: 'GPT-5.1-Codex-Max',
     modelString: CODEX_MODEL_MAP.gpt51CodexMax,
     provider: 'openai',
-    description: 'Optimized for long-horizon, agentic coding tasks in Codex.',
+    description: 'Codex-optimized flagship for deep and fast reasoning.',
     contextWindow: CONTEXT_WINDOW_256K,
     maxOutputTokens: MAX_OUTPUT_32K,
     supportsVision: true,
@@ -51,7 +63,7 @@ export const CODEX_MODELS: ModelDefinition[] = [
     name: 'GPT-5.1-Codex-Mini',
     modelString: CODEX_MODEL_MAP.gpt51CodexMini,
     provider: 'openai',
-    description: 'Smaller, more cost-effective version for faster workflows.',
+    description: 'Optimized for codex. Cheaper, faster, but less capable.',
     contextWindow: CONTEXT_WINDOW_128K,
     maxOutputTokens: MAX_OUTPUT_16K,
     supportsVision: true,
@@ -66,7 +78,7 @@ export const CODEX_MODELS: ModelDefinition[] = [
     name: 'GPT-5.2',
     modelString: CODEX_MODEL_MAP.gpt52,
     provider: 'openai',
-    description: 'Best general agentic model for tasks across industries and domains.',
+    description: 'Latest frontier model with improvements across knowledge, reasoning and coding.',
     contextWindow: CONTEXT_WINDOW_256K,
     maxOutputTokens: MAX_OUTPUT_32K,
     supportsVision: true,

apps/server/src/providers/provider-factory.ts

@@ -103,7 +103,7 @@ export class ProviderFactory {
   /**
    * Get the appropriate provider for a given model ID
    *
-   * @param modelId Model identifier (e.g., "claude-opus-4-5-20251101", "cursor-gpt-4o", "cursor-auto")
+   * @param modelId Model identifier (e.g., "claude-opus-4-6", "cursor-gpt-4o", "cursor-auto")
    * @param options Optional settings
    * @param options.throwOnDisconnected Throw error if provider is disconnected (default: true)
    * @returns Provider instance for the model

apps/server/tests/unit/lib/model-resolver.test.ts

@@ -35,7 +35,7 @@ describe('model-resolver.ts', () => {
 
     it("should resolve 'opus' alias to full model string", () => {
       const result = resolveModelString('opus');
-      expect(result).toBe('claude-opus-4-5-20251101');
+      expect(result).toBe('claude-opus-4-6');
       expect(consoleSpy.log).toHaveBeenCalledWith(
         expect.stringContaining('Migrated legacy ID: "opus" -> "claude-opus"')
       );
@@ -117,7 +117,7 @@ describe('model-resolver.ts', () => {
   describe('getEffectiveModel', () => {
     it('should prioritize explicit model over session and default', () => {
       const result = getEffectiveModel('opus', 'haiku', 'gpt-5.2');
-      expect(result).toBe('claude-opus-4-5-20251101');
+      expect(result).toBe('claude-opus-4-6');
     });
 
     it('should use session model when explicit is not provided', () => {

apps/server/tests/unit/lib/sdk-options.test.ts

@@ -491,5 +491,29 @@ describe('sdk-options.ts', () => {
         expect(options.maxThinkingTokens).toBeUndefined();
       });
     });
+
+    describe('adaptive thinking for Opus 4.6', () => {
+      it('should not set maxThinkingTokens for adaptive thinking (model decides)', async () => {
+        const { createAutoModeOptions } = await import('@/lib/sdk-options.js');
+
+        const options = createAutoModeOptions({
+          cwd: '/test/path',
+          thinkingLevel: 'adaptive',
+        });
+
+        expect(options.maxThinkingTokens).toBeUndefined();
+      });
+
+      it('should not include maxThinkingTokens when thinkingLevel is "none"', async () => {
+        const { createAutoModeOptions } = await import('@/lib/sdk-options.js');
+
+        const options = createAutoModeOptions({
+          cwd: '/test/path',
+          thinkingLevel: 'none',
+        });
+
+        expect(options.maxThinkingTokens).toBeUndefined();
+      });
+    });
   });
 });

apps/server/tests/unit/providers/claude-provider.test.ts

@@ -39,7 +39,7 @@ describe('claude-provider.ts', () => {
 
       const generator = provider.executeQuery({
         prompt: 'Hello',
-        model: 'claude-opus-4-5-20251101',
+        model: 'claude-opus-4-6',
         cwd: '/test',
       });
 
@@ -59,7 +59,7 @@ describe('claude-provider.ts', () => {
 
       const generator = provider.executeQuery({
         prompt: 'Test prompt',
-        model: 'claude-opus-4-5-20251101',
+        model: 'claude-opus-4-6',
         cwd: '/test/dir',
         systemPrompt: 'You are helpful',
         maxTurns: 10,
@@ -71,7 +71,7 @@ describe('claude-provider.ts', () => {
       expect(sdk.query).toHaveBeenCalledWith({
         prompt: 'Test prompt',
         options: expect.objectContaining({
-          model: 'claude-opus-4-5-20251101',
+          model: 'claude-opus-4-6',
           systemPrompt: 'You are helpful',
           maxTurns: 10,
           cwd: '/test/dir',
@@ -91,7 +91,7 @@ describe('claude-provider.ts', () => {
 
       const generator = provider.executeQuery({
         prompt: 'Test',
-        model: 'claude-opus-4-5-20251101',
+        model: 'claude-opus-4-6',
         cwd: '/test',
       });
 
@@ -116,7 +116,7 @@ describe('claude-provider.ts', () => {
 
       const generator = provider.executeQuery({
         prompt: 'Test',
-        model: 'claude-opus-4-5-20251101',
+        model: 'claude-opus-4-6',
         cwd: '/test',
         abortController,
       });
@@ -145,7 +145,7 @@ describe('claude-provider.ts', () => {
 
       const generator = provider.executeQuery({
         prompt: 'Current message',
-        model: 'claude-opus-4-5-20251101',
+        model: 'claude-opus-4-6',
         cwd: '/test',
         conversationHistory,
         sdkSessionId: 'test-session-id',
@@ -176,7 +176,7 @@ describe('claude-provider.ts', () => {
 
       const generator = provider.executeQuery({
         prompt: arrayPrompt as any,
-        model: 'claude-opus-4-5-20251101',
+        model: 'claude-opus-4-6',
         cwd: '/test',
       });
 
@@ -196,7 +196,7 @@ describe('claude-provider.ts', () => {
 
       const generator = provider.executeQuery({
         prompt: 'Test',
-        model: 'claude-opus-4-5-20251101',
+        model: 'claude-opus-4-6',
         cwd: '/test',
       });
 
@@ -222,7 +222,7 @@ describe('claude-provider.ts', () => {
 
       const generator = provider.executeQuery({
         prompt: 'Test',
-        model: 'claude-opus-4-5-20251101',
+        model: 'claude-opus-4-6',
         cwd: '/test',
       });
 
@@ -286,7 +286,7 @@ describe('claude-provider.ts', () => {
 
       const generator = provider.executeQuery({
         prompt: 'Test',
-        model: 'claude-opus-4-5-20251101',
+        model: 'claude-opus-4-6',
         cwd: '/test',
       });
 
@@ -313,7 +313,7 @@ describe('claude-provider.ts', () => {
 
       const generator = provider.executeQuery({
         prompt: 'Test',
-        model: 'claude-opus-4-5-20251101',
+        model: 'claude-opus-4-6',
         cwd: '/test',
       });
 
@@ -341,7 +341,7 @@ describe('claude-provider.ts', () => {
 
       const generator = provider.executeQuery({
         prompt: 'Test',
-        model: 'claude-opus-4-5-20251101',
+        model: 'claude-opus-4-6',
         cwd: '/test',
       });
 
@@ -366,12 +366,12 @@ describe('claude-provider.ts', () => {
       expect(models).toHaveLength(4);
     });
 
-    it('should include Claude Opus 4.5', () => {
+    it('should include Claude Opus 4.6', () => {
       const models = provider.getAvailableModels();
 
-      const opus = models.find((m) => m.id === 'claude-opus-4-5-20251101');
+      const opus = models.find((m) => m.id === 'claude-opus-4-6');
       expect(opus).toBeDefined();
-      expect(opus?.name).toBe('Claude Opus 4.5');
+      expect(opus?.name).toBe('Claude Opus 4.6');
       expect(opus?.provider).toBe('anthropic');
     });
 
@@ -400,7 +400,7 @@ describe('claude-provider.ts', () => {
     it('should mark Opus as default', () => {
       const models = provider.getAvailableModels();
 
-      const opus = models.find((m) => m.id === 'claude-opus-4-5-20251101');
+      const opus = models.find((m) => m.id === 'claude-opus-4-6');
       expect(opus?.default).toBe(true);
     });
 

apps/server/tests/unit/providers/provider-factory.test.ts

@@ -54,8 +54,8 @@ describe('provider-factory.ts', () => {
 
   describe('getProviderForModel', () => {
     describe('Claude models (claude-* prefix)', () => {
-      it('should return ClaudeProvider for claude-opus-4-5-20251101', () => {
-        const provider = ProviderFactory.getProviderForModel('claude-opus-4-5-20251101');
+      it('should return ClaudeProvider for claude-opus-4-6', () => {
+        const provider = ProviderFactory.getProviderForModel('claude-opus-4-6');
         expect(provider).toBeInstanceOf(ClaudeProvider);
       });
 
@@ -70,7 +70,7 @@ describe('provider-factory.ts', () => {
       });
 
       it('should be case-insensitive for claude models', () => {
-        const provider = ProviderFactory.getProviderForModel('CLAUDE-OPUS-4-5-20251101');
+        const provider = ProviderFactory.getProviderForModel('CLAUDE-OPUS-4-6');
         expect(provider).toBeInstanceOf(ClaudeProvider);
       });
     });

apps/ui/docs/AGENT_ARCHITECTURE.md

@@ -199,7 +199,7 @@ The agent is configured with:
 
 ```javascript
 {
-  model: "claude-opus-4-5-20251101",
+  model: "claude-opus-4-6",
   maxTurns: 20,
   cwd: workingDirectory,
   allowedTools: [