Remove blocks as model and switch automatically (#504)

ai/models.ts

@@ -20,12 +20,6 @@ export const models: Array<Model> = [
     apiIdentifier: 'gpt-4o',
     description: 'For complex, multi-step tasks',
   },
-  {
-    id: 'gpt-4o-blocks',
-    label: 'GPT 4o with Blocks',
-    apiIdentifier: 'gpt-4o',
-    description: 'Collaborate with writing',
-  },
 ] as const;
 
 export const DEFAULT_MODEL_NAME: string = 'gpt-4o-mini';

ai/prompts.ts

@@ -9,7 +9,6 @@ export const blocksPrompt = `
   - When explicitly requested to create a document
 
   **When NOT to use \`createDocument\`:**
-  - For short content (<10 lines)
   - For informational/explanatory content
   - For conversational responses
   - When asked to keep it in chat
@@ -24,3 +23,5 @@ export const blocksPrompt = `
 
 export const regularPrompt =
   'You are a friendly assistant! Keep your responses concise and helpful.';
+
+export const systemPrompt = `${regularPrompt}\n\n${blocksPrompt}`;

app/(chat)/api/chat/route.ts

@@ -9,7 +9,7 @@ import { z } from 'zod';
 
 import { customModel } from '@/ai';
 import { models } from '@/ai/models';
-import { blocksPrompt, regularPrompt } from '@/ai/prompts';
+import { blocksPrompt, regularPrompt, systemPrompt } from '@/ai/prompts';
 import { auth } from '@/app/(auth)/auth';
 import {
   deleteChatById,
@@ -45,6 +45,8 @@ const blocksTools: AllowedTools[] = [
 
 const weatherTools: AllowedTools[] = ['getWeather'];
 
+const allTools: AllowedTools[] = [...blocksTools, ...weatherTools];
+
 export async function POST(request: Request) {
   const {
     id,
@@ -89,11 +91,10 @@ export async function POST(request: Request) {
 
   const result = await streamText({
     model: customModel(model.apiIdentifier),
-    system: modelId === 'gpt-4o-blocks' ? blocksPrompt : regularPrompt,
+    system: systemPrompt,
     messages: coreMessages,
     maxSteps: 5,
-    experimental_activeTools:
-      modelId === 'gpt-4o-blocks' ? blocksTools : weatherTools,
+    experimental_activeTools: allTools,
     tools: {
       getWeather: {
         description: 'Get the current weather at a location',