Grok 4.3 reasoning cannot be toggled (#2993)

Author: chrarnoldus

apps/web/src/lib/ai-gateway/providers/model-settings.ts

@@ -4,7 +4,7 @@ import { isKimiModel } from '@/lib/ai-gateway/providers/moonshotai';
 import { isOpenAiModel } from '@/lib/ai-gateway/providers/openai';
 import { isAlibabaDirectModel } from '@/lib/ai-gateway/providers/qwen';
 import { seed_20_code_free_model } from '@/lib/ai-gateway/providers/seed';
-import { isGrok4Model, isGrokModel } from '@/lib/ai-gateway/providers/xai';
+import { isGrokModel, isGrokToggleableReasoningModel } from '@/lib/ai-gateway/providers/xai';
 import { isGlmModel } from '@/lib/ai-gateway/providers/zai';
 import type {
   CustomLlmProvider,
@@ -66,6 +66,7 @@ export function getModelVariants(model: string): OpenCodeSettings['variants'] {
   if (
     isKimiModel(model) ||
     isGlmModel(model) ||
+    isGrokToggleableReasoningModel(model) ||
     isAlibabaDirectModel(model) ||
     isGemmaModel(model)
   ) {
@@ -87,12 +88,6 @@ export function getModelVariants(model: string): OpenCodeSettings['variants'] {
       high: { reasoning: { enabled: true, effort: 'high' } },
     };
   }
-  if (isGrok4Model(model)) {
-    return {
-      'non-reasoning': { reasoning: { enabled: false, effort: 'none' } },
-      reasoning: { reasoning: { enabled: true, effort: 'medium' } },
-    };
-  }
   return undefined;
 }
 

apps/web/src/lib/ai-gateway/providers/xai.ts

@@ -24,6 +24,10 @@ export function isGrok4Model(model: string) {
   return model.includes('grok-4');
 }
 
+export function isGrokToggleableReasoningModel(model: string) {
+  return model.includes('grok-4.1') || model.includes('grok-4.2');
+}
+
 export function applyXaiModelSettings(
   requestToMutate: GatewayRequest,
   extraHeaders: Record<string, string>