feat: dynamic model discovery from vercel ai gateway (#1353)

lib/ai/models.ts

@@ -1,21 +1,89 @@
-export const DEFAULT_CHAT_MODEL: string = "chat-model";
+// Curated list of top models from Vercel AI Gateway
+export const DEFAULT_CHAT_MODEL = "google/gemini-2.5-flash-lite";
 
 export type ChatModel = {
   id: string;
   name: string;
+  provider: string;
   description: string;
 };
 
 export const chatModels: ChatModel[] = [
+  // Anthropic
   {
-    id: "chat-model",
-    name: "Grok Vision",
-    description: "Advanced multimodal model with vision and text capabilities",
+    id: "anthropic/claude-haiku-4.5",
+    name: "Claude Haiku 4.5",
+    provider: "anthropic",
+    description: "Fast and affordable, great for everyday tasks",
   },
   {
-    id: "chat-model-reasoning",
-    name: "Grok Reasoning",
-    description:
-      "Uses advanced chain-of-thought reasoning for complex problems",
+    id: "anthropic/claude-sonnet-4.5",
+    name: "Claude Sonnet 4.5",
+    provider: "anthropic",
+    description: "Best balance of speed, intelligence, and cost",
+  },
+  {
+    id: "anthropic/claude-opus-4.5",
+    name: "Claude Opus 4.5",
+    provider: "anthropic",
+    description: "Most capable Anthropic model",
+  },
+  // OpenAI
+  {
+    id: "openai/gpt-4.1-mini",
+    name: "GPT-4.1 Mini",
+    provider: "openai",
+    description: "Fast and cost-effective for simple tasks",
+  },
+  {
+    id: "openai/gpt-5.2",
+    name: "GPT-5.2",
+    provider: "openai",
+    description: "Most capable OpenAI model",
+  },
+  // Google
+  {
+    id: "google/gemini-2.5-flash-lite",
+    name: "Gemini 2.5 Flash Lite",
+    provider: "google",
+    description: "Ultra fast and affordable",
+  },
+  {
+    id: "google/gemini-3-pro-preview",
+    name: "Gemini 3 Pro",
+    provider: "google",
+    description: "Most capable Google model",
+  },
+  // xAI
+  {
+    id: "xai/grok-4.1-fast-non-reasoning",
+    name: "Grok 4.1 Fast",
+    provider: "xai",
+    description: "Fast with 30K context",
+  },
+  // Reasoning models (extended thinking)
+  {
+    id: "anthropic/claude-3.7-sonnet-thinking",
+    name: "Claude 3.7 Sonnet",
+    provider: "reasoning",
+    description: "Extended thinking for complex problems",
+  },
+  {
+    id: "xai/grok-code-fast-1-thinking",
+    name: "Grok Code Fast",
+    provider: "reasoning",
+    description: "Reasoning optimized for code",
   },
 ];
+
+// Group models by provider for UI
+export const modelsByProvider = chatModels.reduce(
+  (acc, model) => {
+    if (!acc[model.provider]) {
+      acc[model.provider] = [];
+    }
+    acc[model.provider].push(model);
+    return acc;
+  },
+  {} as Record<string, ChatModel[]>
+);