feat(cliproxy): add Grok 4.6 selection

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/cliproxy/__tests__/model-catalog-compat.test.ts

@@ -46,21 +46,62 @@ describe('model-catalog compatibility lookups', () => {
     expect(PROVIDER_TO_CHANNEL.xai).toBe('xai');
   });
 
-  it('merges live xAI model metadata while preserving the static coding default', () => {
+  it('merges live Grok 4.6 metadata while preserving the static coding default', () => {
     const catalog = mergeCatalog('xai', [
       { id: 'grok-build-0.1', display_name: 'Grok Build 0.1' },
       {
-        id: 'grok-4.5',
-        display_name: 'Grok 4.5',
-        thinking: { levels: ['low', 'medium', 'high'] },
+        id: 'grok-4.6',
+        display_name: 'Grok 4.6',
+        context_length: 500_000,
+        thinking: {
+          levels: ['low', 'medium', 'high', 'xhigh'],
+          zero_allowed: false,
+        },
       },
     ]);
 
     expect(catalog?.defaultModel).toBe('grok-build-0.1');
-    expect(catalog?.models[1]?.thinking).toMatchObject({
-      type: 'levels',
-      levels: ['low', 'medium', 'high'],
+    expect(catalog?.models[1]).toMatchObject({
+      id: 'grok-4.6',
+      contextWindow: 500_000,
+      thinking: {
+        type: 'levels',
+        levels: ['low', 'medium', 'high', 'xhigh'],
+        zeroAllowed: false,
+      },
     });
+    expect(catalog?.models[1]?.extendedContext).toBeUndefined();
+  });
+
+  it('preserves static zeroAllowed when live level metadata omits it', () => {
+    const catalog = mergeCatalog('xai', [
+      {
+        id: 'grok-4.3',
+        display_name: 'Grok 4.3',
+        thinking: { levels: ['none', 'low', 'medium', 'high'] },
+      },
+    ]);
+
+    expect(catalog?.models[0]?.thinking).toMatchObject({
+      type: 'levels',
+      levels: ['none', 'low', 'medium', 'high'],
+      zeroAllowed: true,
+    });
+  });
+
+  it('prefers explicit live zeroAllowed over static level metadata', () => {
+    const catalog = mergeCatalog('xai', [
+      {
+        id: 'grok-4.3',
+        display_name: 'Grok 4.3',
+        thinking: {
+          levels: ['low', 'medium', 'high'],
+          zero_allowed: false,
+        },
+      },
+    ]);
+
+    expect(catalog?.models[0]?.thinking?.zeroAllowed).toBe(false);
   });
 
   it('does not export extended-context capability from live xAI context length', () => {

src/cliproxy/__tests__/model-catalog.test.js

@@ -77,6 +77,7 @@ describe('Model Catalog', () => {
       const ids = MODEL_CATALOG.xai.models.map((model) => model.id);
       assert.deepStrictEqual(ids, [
         'grok-build-0.1',
+        'grok-4.6',
         'grok-4.5',
         'grok-4.3',
         'grok-4.20-0309-reasoning',
@@ -88,6 +89,18 @@ describe('Model Catalog', () => {
       ]);
     });
 
+    it('includes Grok 4.6 with upstream reasoning metadata', () => {
+      const { MODEL_CATALOG } = modelCatalog;
+      const grok46 = MODEL_CATALOG.xai.models.find((model) => model.id === 'grok-4.6');
+
+      assert(grok46, 'Should include grok-4.6');
+      assert.strictEqual(grok46.name, 'Grok 4.6');
+      assert.strictEqual(grok46.contextWindow, 500000);
+      assert.strictEqual(grok46.thinking.type, 'levels');
+      assert.deepStrictEqual(grok46.thinking.levels, ['low', 'medium', 'high', 'xhigh']);
+      assert.strictEqual(grok46.thinking.zeroAllowed, false);
+    });
+
     it('does not expose Claude [1m] suffix support for xAI model IDs', () => {
       const { MODEL_CATALOG, supportsExtendedContext } = modelCatalog;
 

src/cliproxy/model-catalog.ts

@@ -323,6 +323,18 @@ export const MODEL_CATALOG: Partial<Record<CLIProxyProvider, ProviderCatalog>> =
         description: 'Fast coding model for agentic software engineering workflows',
         contextWindow: 256000,
       },
+      {
+        id: 'grok-4.6',
+        name: 'Grok 4.6',
+        description:
+          "SpaceXAI's smartest model built for long-running agents, interactive and visual work.",
+        contextWindow: 500000,
+        thinking: {
+          type: 'levels',
+          levels: ['low', 'medium', 'high', 'xhigh'],
+          zeroAllowed: false,
+        },
+      },
       {
         id: 'grok-4.5',
         name: 'Grok 4.5',

src/cliproxy/services/catalog-cache.ts

@@ -198,6 +198,7 @@ function mapThinking(remote?: RemoteThinkingSupport): ThinkingSupport | undefine
     return {
       type: 'levels',
       levels: remote.levels,
+      zeroAllowed: remote.zero_allowed,
       dynamicAllowed: remote.dynamic_allowed,
     };
   }
@@ -279,6 +280,7 @@ export function mergeCatalog(
       const mergedThinking = remoteEntry.thinking
         ? {
             ...remoteEntry.thinking,
+            zeroAllowed: remoteEntry.thinking.zeroAllowed ?? staticEntry.thinking?.zeroAllowed,
             maxLevel: remoteEntry.thinking.maxLevel ?? staticEntry.thinking?.maxLevel,
           }
         : staticEntry.thinking;

ui/src/lib/model-catalogs.ts

@@ -398,6 +398,13 @@ export const MODEL_CATALOGS: Record<string, ProviderCatalog> = {
           haiku: 'grok-composer-2.5-fast',
         },
       },
+      {
+        id: 'grok-4.6',
+        name: 'Grok 4.6',
+        description:
+          "SpaceXAI's smartest model built for long-running agents, interactive and visual work.",
+        reasoningLevels: ['low', 'medium', 'high', 'xhigh'],
+      },
       {
         id: 'grok-4.5',
         name: 'Grok 4.5',

ui/tests/unit/ui/lib/model-catalogs-xai.test.ts

@@ -11,6 +11,7 @@ describe('xAI model catalog defaults', () => {
     expect(catalog.defaultModel).toBe('grok-build-0.1');
     expect(ids).toEqual([
       'grok-build-0.1',
+      'grok-4.6',
       'grok-4.5',
       'grok-4.3',
       'grok-4.20-0309-reasoning',
@@ -20,6 +21,12 @@ describe('xAI model catalog defaults', () => {
       'grok-3-mini-fast',
       'grok-composer-2.5-fast',
     ]);
+    expect(catalog.models.find((model) => model.id === 'grok-4.6')?.reasoningLevels).toEqual([
+      'low',
+      'medium',
+      'high',
+      'xhigh',
+    ]);
     expect(defaultModel?.presetMapping).toEqual({
       default: 'grok-build-0.1',
       opus: 'grok-4.5',

ui/tests/unit/ui/lib/reasoning-control.test.ts

@@ -13,6 +13,11 @@ const xaiCatalog: ProviderCatalog = {
   defaultModel: 'grok-build-0.1',
   models: [
     { id: 'grok-build-0.1', name: 'Grok Build 0.1' },
+    {
+      id: 'grok-4.6',
+      name: 'Grok 4.6',
+      reasoningLevels: ['low', 'medium', 'high', 'xhigh'],
+    },
     { id: 'grok-4.5', name: 'Grok 4.5', reasoningLevels: ['low', 'medium', 'high'] },
     { id: 'grok-4.3', name: 'Grok 4.3', reasoningLevels: ['none', 'low', 'medium', 'high'] },
   ],
@@ -96,6 +101,7 @@ describe('xai adapter', () => {
   const adapter = requireAdapter('xai');
 
   it('returns per-model levels from catalog metadata', () => {
+    expect(adapter.getOptions('grok-4.6', xaiCatalog)).toEqual(['low', 'medium', 'high', 'xhigh']);
     expect(adapter.getOptions('grok-4.5', xaiCatalog)).toEqual(['low', 'medium', 'high']);
     expect(adapter.getOptions('grok-4.3', xaiCatalog)).toEqual(['none', 'low', 'medium', 'high']);
   });
@@ -107,6 +113,7 @@ describe('xai adapter', () => {
   });
 
   it('writes and clears suffixed values through apply', () => {
+    expect(adapter.apply('grok-4.6', 'xhigh')).toBe('grok-4.6(xhigh)');
     expect(adapter.apply('grok-4.5', 'high')).toBe('grok-4.5(high)');
     expect(adapter.apply('grok-4.5(high)', undefined)).toBe('grok-4.5');
     expect(adapter.apply('grok-4.3', 'none')).toBe('grok-4.3(none)');