Revert "fix: revert llm info changes (see 7937)"

This reverts commit 93a2668.

Author: RomneyDa

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

@@ -7,6 +7,60 @@ export const xAI: ModelProvider = {
       displayName: "Grok Beta",
       contextLength: 128000,
       recommendedFor: ["chat"],
+      regex: /grok-beta/,
+    },
+    {
+      model: "grok-2",
+      displayName: "Grok 2",
+      contextLength: 131072,
+      recommendedFor: ["chat"],
+      regex: /grok-2/,
+    },
+    {
+      model: "grok-3-mini",
+      displayName: "Grok 3 Mini",
+      contextLength: 131072,
+      maxCompletionTokens: 8000,
+      recommendedFor: ["chat"],
+      regex: /grok-3-mini/,
+    },
+    {
+      model: "grok-3",
+      displayName: "Grok 3",
+      contextLength: 131072,
+      recommendedFor: ["chat"],
+      regex: /grok-3/,
+    },
+    {
+      model: "grok-4-fast-reasoning",
+      displayName: "Grok 4 Fast Reasoning",
+      contextLength: 2000000,
+      maxCompletionTokens: 30000,
+      recommendedFor: ["chat"],
+      regex: /grok-4-fast-reasoning/,
+    },
+    {
+      model: "grok-4-fast-non-reasoning",
+      displayName: "Grok 4 Fast Non-Reasoning",
+      contextLength: 2000000,
+      maxCompletionTokens: 30000,
+      recommendedFor: ["chat"],
+      regex: /grok-4-fast-non-reasoning/,
+    },
+    {
+      model: "grok-4",
+      displayName: "Grok 4 Fast",
+      contextLength: 256000,
+      recommendedFor: ["chat"],
+      regex: /grok-4/,
+    },
+    {
+      model: "grok-code-fast-1",
+      displayName: "Grok Code Fast 1",
+      contextLength: 256000,
+      maxCompletionTokens: 10000,
+      recommendedFor: ["chat"],
+      regex: /grok-code-fast-1/,
     },
   ],
   id: "xAI",