Vercel AI SDK
The TypeScript toolkit for building AI apps. Unified API across OpenAI, Anthropic, Google. Streaming, tool calling, structured output, multi-step agents. 50K+ GitHub stars.
The Vercel AI SDK is the standard TypeScript library for building AI-powered applications. It provides a unified interface - write code once, swap between OpenAI, Anthropic, Google, or any provider. Key features: streaming chat responses, structured JSON output with Zod schemas, tool calling with automatic execution, and multi-step agent loops. The `ai` core package handles the LLM interaction, `ai/react` provides React hooks (useChat, useCompletion), and `ai/rsc` enables server-side streaming with React Server Components. Over 50K GitHub stars. I use it in nearly every project and built a complete course on it for this site.
Similar Tools
Mastra
TypeScript-first AI agent framework. Workflows, RAG, tool use, evals, and integrations. Built for production Node.js apps. Open-source.
Claude Agent SDK
Anthropic's Python SDK for building production agent systems. Tool use, guardrails, agent handoffs, and orchestration. Released alongside Claude 4.
LangChain / LangGraph
Most popular LLM framework. 100K+ GitHub stars. Chains, RAG, vector stores, tool use. LangGraph adds stateful multi-agent workflows with cycles and persistence.
Composio
Gives AI agents access to 250+ external tools (GitHub, Slack, Gmail, databases) with managed OAuth. Handles the auth and API complexity so your agent doesn't have to.
Get started with Vercel AI SDK
The TypeScript toolkit for building AI apps. Unified API across OpenAI, Anthropic, Google. Streaming, tool calling, structured output, multi-step agents. 50K+ GitHub stars.
Try Vercel AI SDKGet weekly tool reviews
Honest takes on AI dev tools, frameworks, and infrastructure - delivered to your inbox.
Subscribe FreeMore AI Frameworks Tools
Claude Agent SDK
Anthropic's Python SDK for building production agent systems. Tool use, guardrails, agent handoffs, and orchestration. Released alongside Claude 4.
LangChain / LangGraph
Most popular LLM framework. 100K+ GitHub stars. Chains, RAG, vector stores, tool use. LangGraph adds stateful multi-agent workflows with cycles and persistence.
Composio
Gives AI agents access to 250+ external tools (GitHub, Slack, Gmail, databases) with managed OAuth. Handles the auth and API complexity so your agent doesn't have to.
Related Guides
Claude Code Setup Guide
Configure Claude Code for maximum productivity -- CLAUDE.md, sub-agents, MCP servers, and autonomous workflows.
AI AgentsMCP Servers Explained
What MCP servers are, how they work, and how to build your own in 5 minutes.
AI AgentsGetting Started with DevDigest CLI
Install the dd CLI and scaffold your first AI-powered app in under a minute.
Getting StartedRelated Posts
Convex vs Supabase for AI Apps
Convex and Supabase both work for AI-powered apps. Here is when to use each, based on building production apps with both...
MCP vs Function Calling: When to Use Each
MCP servers and function calling both let AI tools interact with external systems. They solve different problems. Here i...
10 TypeScript Patterns Every AI Developer Should Know
The TypeScript patterns that show up in every AI project. Streaming responses, type-safe tool definitions, structured ou...
