chore: add support for grok 4.1 fast

core/llm/toolSupport.ts

@@ -120,7 +120,7 @@ export const PROVIDER_TOOL_SUPPORT: Record<string, (model: string) => boolean> =
     },
     xAI: (model) => {
       const lowerCaseModel = model.toLowerCase();
-      return ["grok-3", "grok-4", "grok-code"].some((val) =>
+      return ["grok-3", "grok-4", "grok-4-1", "grok-code"].some((val) =>
         lowerCaseModel.includes(val),
       );
     },
@@ -396,6 +396,7 @@ export function isRecommendedAgentModel(modelName: string): boolean {
     [/claude/, /sonnet/, /3\.7|3-7|-4/],
     [/claude/, /opus/, /-4/],
     [/grok-code/],
+    [/grok-4-1|grok-4\.1/],
     [/claude/, /4-5/],
   ];
   for (const combo of recs) {

docs/customize/model-roles/chat.mdx

@@ -95,20 +95,20 @@ If you prefer to use a model from [OpenAI](../model-providers/top-level/openai),
   </Tab>
 </Tabs>
 
-### Grok-2 from xAI
+### Grok-4 from xAI
 
-If you prefer to use a model from [xAI](../model-providers/more/xAI), then we recommend Grok-2.
+If you prefer to use a model from [xAI](../model-providers/more/xAI), then we recommend Grok-4.
 
 <Tabs>
     <Tab title="Hub">
-    Add the [xAI Grok-2 block](https://hub.continue.dev/xai/grok-2) from the hub
+    Add the [xAI Grok-4.1 block](https://hub.continue.dev/xai/grok-4-1-fast-non-reasoning) from the hub
     </Tab>
   <Tab title="YAML">
   ```yaml title="config.yaml"
   models:
-    - name: Grok-2
+    - name: Grok-4.1
       provider: xAI
-      model: grok-2-latest
+      model: grok-4-1-fast-non-reasoning
       apiKey: <YOUR_XAI_API_KEY>
   ```
   </Tab>

extensions/cli/src/utils/modelCapability.ts

@@ -10,7 +10,7 @@ export function isModelCapable(
   const normalizedName = name.toLowerCase();
   const normalizedModel = model ? model.toLowerCase() : "";
 
-  const patterns = [/gemini/, /claude/, /gpt/, /o\d/, /kimi/, /qwen/];
+  const patterns = [/gemini/, /claude/, /gpt/, /o\d/, /kimi/, /qwen/, /grok/];
 
   // If either name OR model matches any of the patterns, consider it capable
   if (patterns.some((pattern) => pattern.test(normalizedName))) {

gui/src/pages/AddNewModel/configs/models.ts

@@ -1908,6 +1908,34 @@ export const models: { [key: string]: ModelPackage } = {
     providerOptions: ["xAI"],
     isOpenSource: false,
   },
+  grok41FastReasoning: {
+    title: "Grok 4.1 Fast Reasoning",
+    description:
+      "xAI's upgraded reasoning model offering strong performance in complex tasks.",
+    refUrl: "https://docs.x.ai/docs/models/grok-4-1-fast-reasoning",
+    params: {
+      title: "Grok 4.1 Fast Reasoning",
+      model: "grok-4-1-fast-reasoning",
+      contextLength: 2_000_000,
+    },
+    icon: "xAI.png",
+    providerOptions: ["xAI"],
+    isOpenSource: false,
+  },
+  grok41FastNonReasoning: {
+    title: "Grok 4.1 Fast Non-Reasoning",
+    description:
+      "xAI's upgraded non-reasoning model optimized for speed and efficiency.",
+    refUrl: "https://docs.x.ai/docs/models/grok-4-1-fast-non-reasoning",
+    params: {
+      title: "Grok 4.1 Fast Non-Reasoning",
+      model: "grok-4-1-fast-non-reasoning",
+      contextLength: 2_000_000,
+    },
+    icon: "xAI.png",
+    providerOptions: ["xAI"],
+    isOpenSource: false,
+  },
   grok4: {
     title: "Grok 4",
     description:

gui/src/pages/AddNewModel/configs/providers.ts

@@ -624,6 +624,8 @@ Select the \`GPT-4o\` model below to complete your provider configuration, but n
       models.grokCodeFast1,
       models.grok4FastReasoning,
       models.grok4FastNonReasoning,
+      models.grok41FastReasoning,
+      models.grok41FastNonReasoning,
       models.grok4,
       models.grok3,
       models.grok3Mini,

packages/llm-info/src/providers/cometapi.ts

@@ -173,10 +173,19 @@ export const CometAPI: ModelProvider = {
     },
 
     // Grok Series
+    {
+      model: "grok-4-1-fast-reasoning",
+      displayName: "Grok 4.1 Fast Reasoning",
+      contextLength: 256000,
+      maxCompletionTokens: 4096,
+      description:
+        "Latest Grok model with faster and improved reasoning and conversational abilities.",
+      recommendedFor: ["chat"],
+    },
     {
       model: "grok-4-0709",
       displayName: "Grok 4 (07-09)",
-      contextLength: 128000,
+      contextLength: 256000,
       maxCompletionTokens: 4096,
       description:
         "Latest Grok model with improved reasoning and conversational abilities.",

packages/llm-info/src/providers/xAI.ts

@@ -52,7 +52,21 @@ export const xAI: ModelProvider = {
       displayName: "Grok 4 Fast",
       contextLength: 256000,
       recommendedFor: ["chat"],
-      regex: /grok-4/,
+      regex: /^grok-4$/,
+    },
+    {
+      model: "grok-4-1-fast-reasoning",
+      displayName: "Grok 4.1 Fast Reasoning",
+      contextLength: 256000,
+      recommendedFor: ["chat"],
+      regex: /grok-4-1-fast-reasoning/,
+    },
+    {
+      model: "grok-4-1-fast-non-reasoning",
+      displayName: "Grok 4.1 Fast Non Reasoning",
+      contextLength: 256000,
+      recommendedFor: ["chat"],
+      regex: /grok-4-1-fast-non-reasoning/,
     },
     {
       model: "grok-code-fast-1",