feat(models): support GPT-6.1 Sol in desktop and Codex OAuth

desktop/src/constants/openaiOfficialProvider.test.ts

@@ -5,6 +5,15 @@ import {
 } from './openaiOfficialProvider'
 
 describe('ChatGPT Official fallback model catalog', () => {
+  it('offers GPT-6.1 Sol with OAuth context and reasoning metadata', () => {
+    expect(OPENAI_OFFICIAL_MODELS.find(model => model.id === 'gpt-6.1-sol')).toMatchObject({
+      name: 'GPT-6.1-Sol',
+      context: '258400',
+      defaultReasoningEffort: 'low',
+      supportedReasoningEfforts: ['low', 'medium', 'high', 'xhigh', 'max'],
+    })
+  })
+
   it('exposes the current GPT-6 Codex tiers and effective context windows', () => {
     expect(OPENAI_OFFICIAL_DEFAULT_MODEL_ID).toBe('gpt-6-sol')
     expect(OPENAI_OFFICIAL_MODELS.slice(0, 3)).toMatchObject([

desktop/src/constants/openaiOfficialProvider.ts

@@ -36,6 +36,14 @@ export const OPENAI_OFFICIAL_MODELS: ModelInfo[] = [
     defaultReasoningEffort: 'medium',
     supportedReasoningEfforts: ['low', 'medium', 'high', 'xhigh', 'max'],
   },
+  {
+    id: 'gpt-6.1-sol',
+    name: 'GPT-6.1-Sol',
+    description: 'Latest workhorse model for coding and everyday work',
+    context: '258400',
+    defaultReasoningEffort: 'low',
+    supportedReasoningEfforts: ['low', 'medium', 'high', 'xhigh', 'max'],
+  },
   {
     id: 'gpt-5.6-sol',
     name: 'GPT-5.6-Sol',

src/server/__tests__/providers.test.ts

@@ -678,6 +678,7 @@ describe('ProviderService', () => {
         expect(typeof env.CLAUDE_CODE_MODEL_CONTEXT_WINDOWS).toBe('string')
         expect(JSON.parse(env.CLAUDE_CODE_MODEL_CONTEXT_WINDOWS)).toEqual({
           'gpt-6-sol': 258_400,
+          'gpt-6.1-sol': 258_400,
           'gpt-6-luna': 258_400,
           'gpt-5.6-sol': 353_400,
           'gpt-5.6-terra': 353_400,

src/server/__tests__/settings.test.ts

@@ -1397,6 +1397,7 @@ describe('Models API', () => {
       'gpt-6-astra',
       'gpt-6-sol',
       'gpt-6-luna',
+      'gpt-6.1-sol',
       'gpt-5.6-sol',
       'gpt-5.6-terra',
       'gpt-5.6-luna',
@@ -1410,6 +1411,12 @@ describe('Models API', () => {
       defaultReasoningEffort: 'low',
       supportedReasoningEfforts: ['low', 'medium', 'high', 'xhigh', 'max'],
     })
+    expect(body.models.find(model => model.id === 'gpt-6.1-sol')).toMatchObject({
+      id: 'gpt-6.1-sol',
+      context: '258400',
+      defaultReasoningEffort: 'low',
+      supportedReasoningEfforts: ['low', 'medium', 'high', 'xhigh', 'max'],
+    })
     expect(body.models[1]).toMatchObject({
       id: 'gpt-6-sol',
       defaultReasoningEffort: 'medium',

src/server/services/openaiOfficialProvider.test.ts

@@ -9,6 +9,7 @@ describe('ChatGPT Official runtime environment', () => {
 
     expect(windows['gpt-6-astra']).toBe(258_400)
     expect(windows['gpt-6-sol']).toBe(258_400)
+    expect(windows['gpt-6.1-sol']).toBe(258_400)
     expect(windows['gpt-6-luna']).toBe(258_400)
     expect(windows['gpt-5.6-sol']).toBe(353_400)
     expect(env.ANTHROPIC_MODEL).toBe('gpt-6-sol')

src/services/openaiAuth/fetch.test.ts

@@ -164,6 +164,36 @@ describe('buildOpenAICodexFetch', () => {
     })
   })
 
+  test('routes GPT-6.1 Sol unchanged with its default low effort through Codex OAuth', async () => {
+    const calls: Array<{ url: string; body: Record<string, unknown> }> = []
+    const codexFetch = buildOpenAICodexFetch(async (input, init) => {
+      calls.push({ url: String(input), body: readWireBody(init) })
+      return Response.json({
+        id: 'resp_sol_61',
+        object: 'response',
+        model: 'gpt-6.1-sol',
+        status: 'completed',
+        output: [],
+      })
+    }, 'test')
+
+    const response = await codexFetch('https://api.anthropic.com/v1/messages', {
+      method: 'POST',
+      body: JSON.stringify({
+        model: 'gpt-6.1-sol',
+        max_tokens: 64,
+        messages: [{ role: 'user', content: 'Say ok' }],
+      }),
+    })
+
+    expect(response.status).toBe(200)
+    await response.text()
+    expect(calls).toHaveLength(1)
+    expect(calls[0].url).toBe(OPENAI_CODEX_API_ENDPOINT)
+    expect(calls[0].body.model).toBe('gpt-6.1-sol')
+    expect(calls[0].body.reasoning).toEqual({ effort: 'low' })
+  })
+
   test('preserves optional Computer Use parameters in the final Codex OAuth request', async () => {
     const computerTools = buildComputerUseTools().filter(tool =>
       ['get_app_state', 'click'].includes(tool.name),

src/services/openaiAuth/models.test.ts

@@ -18,6 +18,20 @@ import {
 } from './models.js'
 
 describe('openai auth model resolution', () => {
+  test('supports GPT-6.1 Sol selection, metadata and OAuth context budgeting', () => {
+    expect(OPENAI_CODEX_MODEL_CATALOG.find(model => model.value === 'gpt-6.1-sol')).toMatchObject({
+      label: 'GPT-6.1-Sol',
+      defaultReasoningEffort: 'low',
+      supportedReasoningEfforts: ['low', 'medium', 'high', 'xhigh', 'max'],
+      contextWindow: 258_400,
+    })
+    expect(resolveOpenAICodexModel('gpt-6.1-sol')).toBe('gpt-6.1-sol')
+    expect(getOpenAIModelDisplayName('gpt-6.1-sol')).toBe('GPT-6.1-Sol')
+    expect(getOpenAICodexContextWindowForModel('gpt-6.1-sol')).toBe(258_400)
+    expect(resolveOpenAIReasoningEffort('gpt-6.1-sol', undefined)).toBe('low')
+    expect(resolveOpenAIReasoningEffort('gpt-6.1-sol', 'max')).toBe('max')
+  })
+
   test('provides Astra fallback metadata and effective Codex OAuth context', () => {
     const astra = OPENAI_CODEX_MODEL_CATALOG.find((model) => model.value === 'gpt-6-astra')
     expect(astra).toMatchObject({
@@ -87,10 +101,11 @@ describe('openai auth model resolution', () => {
   })
 
   test('exposes GPT-6 Sol and Luna ahead of their GPT-5.6 predecessors', () => {
-    expect(OPENAI_CODEX_MODEL_CATALOG.slice(0, 6).map((model) => model.value)).toEqual([
+    expect(OPENAI_CODEX_MODEL_CATALOG.slice(0, 7).map((model) => model.value)).toEqual([
       'gpt-6-astra',
       'gpt-6-sol',
       'gpt-6-luna',
+      'gpt-6.1-sol',
       'gpt-5.6-sol',
       'gpt-5.6-terra',
       'gpt-5.6-luna',

src/services/openaiAuth/models.ts

@@ -91,6 +91,15 @@ export const OPENAI_CODEX_MODEL_CATALOG: OpenAIModelCatalogEntry[] = [
     supportedReasoningEfforts: GPT_5_6_REASONING_EFFORTS,
     contextWindow: OPENAI_CODEX_STANDARD_EFFECTIVE_CONTEXT_WINDOW,
   },
+  {
+    value: 'gpt-6.1-sol',
+    label: 'GPT-6.1-Sol',
+    description: 'Latest workhorse model for coding and everyday work',
+    descriptionForModel: 'GPT-6.1-Sol - latest workhorse model for coding and everyday work',
+    defaultReasoningEffort: 'low',
+    supportedReasoningEfforts: GPT_5_6_REASONING_EFFORTS,
+    contextWindow: OPENAI_CODEX_STANDARD_EFFECTIVE_CONTEXT_WINDOW,
+  },
   {
     value: 'gpt-5.6-sol',
     label: 'GPT-5.6-Sol',
@@ -245,6 +254,8 @@ export function getOpenAIModelDisplayName(model: string): string | null {
     case 'gpt-6':
     case 'gpt-6-astra':
       return 'GPT-6 Astra'
+    case 'gpt-6.1-sol':
+      return 'GPT-6.1-Sol'
     case 'gpt-6-sol':
       return 'GPT-6-Sol'
     case 'gpt-6-luna':
@@ -292,7 +303,7 @@ export function getOpenAICodexContextWindowForModel(
     return OPENAI_CODEX_STANDARD_EFFECTIVE_CONTEXT_WINDOW
   }
 
-  if (normalized === 'gpt-6-sol' || normalized === 'gpt-6-luna') {
+  if (normalized === 'gpt-6.1-sol' || normalized === 'gpt-6-sol' || normalized === 'gpt-6-luna') {
     return OPENAI_CODEX_STANDARD_EFFECTIVE_CONTEXT_WINDOW
   }