ai-sdk-core

# AI SDK Core

Production-ready backend AI with Vercel AI SDK v5.

**Last Updated**: 2025-11-21

## Table of Contents
1. [Quick Start](#quick-start-5-minutes)
2. [Core Functions](#core-functions)
3. [Provider Setup & Configuration](#provider-setup--configuration)
4. [Tool Calling & Agents](#tool-calling--agents)
5. [Critical v4→v5 Migration](#critical-v4v5-migration)
6. [Top 12 Errors & Solutions](#top-12-errors--solutions)
7. [Production Best Practices](#production-best-practices)
8. [When to Load References](#when-to-load-references)
9. [When to Use This Skill](#when-to-use-this-skill)
10. [Dependencies & Versions](#dependencies--versions)
11. [Links to Official Documentation](#links-to-official-documentation)
12. [Templates & References](#templates--references)

---

## Quick Start (5 Minutes)

### Installation

```bash
bun add ai @ai-sdk/openai @ai-sdk/anthropic @ai-sdk/google workers-ai-provider zod  # preferred
# or: npm install ai @ai-sdk/openai @ai-sdk/anthropic @ai-sdk/google workers-ai-provider zod
```

### Environment Variables

```bash
# .env
OPENAI_API_KEY=sk-...
ANTHROPIC_API_KEY=sk-ant-...
GOOGLE_GENERATIVE_AI_API_KEY=...
```

### First Example: Generate Text

```typescript
import { generateText } from 'ai';
import { openai } from '@ai-sdk/openai';

const result = await generateText({
  model: openai('gpt-4-turbo'),
  prompt: 'What is TypeScript?',
});

console.log(result.text);
```

### First Example: Streaming Chat

```typescript
import { streamText } from 'ai';
import { anthropic } from '@ai-sdk/anthropic';

const stream = streamText({
  model: anthropic('claude-sonnet-4-5-20250929'),
  messages: [
    { role: 'user', content: 'Tell me a story' },
  ],
});

for await (const chunk of stream.textStream) {
  process.stdout.write(chunk);
}
```

### First Example: Structured Output

```typescript
import { generateObject } from 'ai';
import { openai } from '@ai-sdk/openai';
import { z } from 'zod';

const result = await generateObject({
  model: openai('