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Vercel AI SDK

TypeScript toolkit for streaming text, tool calls and agents across many model providers

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What Vercel AI SDK does

  • TypeScript toolkit for streaming text, tool calls and agents across many model providers
  • React/Next/Vue/Svelte hooks for chat UIs
  • Open source

Vercel AI SDK — straight answers

What is Vercel AI SDK?

Vercel AI SDK is listed under Agent Frameworks (Developers), in the AI Agents & Automation category on Flocci AI Tools. TypeScript toolkit for streaming text, tool calls and agents across many model providers. It is free, with no paid plan attached, and it lives at ai-sdk.dev.

Is Vercel AI SDK free?

Vercel AI SDK is listed as fully free — there is no paid tier attached to it in the catalog. That makes it one of the 399 entries on Flocci AI Tools with no upgrade path built in.

What can Vercel AI SDK do?

Vercel AI SDK does 3 things the catalog singles out: Typescript toolkit for streaming text, tool calls and agents across many model providers; react/next/vue/svelte hooks for chat uis; open source.

What is the best free alternative to Vercel AI SDK?

Agno is the closest free alternative: it sits in the same Agent Frameworks (Developers) sub-category and is free. AWS Strands Agents, CAMEL and Claude Agent SDK also start free. The full list is on the alternatives page.

See the full list →

Vercel AI SDK alternatives

Compare all alternatives →

LangGraph

Agent Frameworks (Developers)
free
  • Build stateful, multi-agent apps as graphs
  • Human-in-the-loop and durable execution
  • Works with any LLM
  • Open-source with a hosted platform
Visit

CrewAI

Agent Frameworks (Developers)
freemium
  • Role-based multi-agent 'crews'
  • Simple Python API for collaboration
  • Tasks, tools and flows
  • Open-source core
Visit

OpenAI Agents SDK

Agent Frameworks (Developers)
free
  • Lightweight agent orchestration from OpenAI
  • Agent handoffs, guardrails and tracing
  • Tool and function calling built in
  • Open-source, pay only for model usage
Visit

Microsoft AutoGen

Agent Frameworks (Developers)
free
  • Multi-agent conversation framework
  • Event-driven, async agent design
  • Studio UI for prototyping
  • Fully open-source
Visit

LlamaIndex

Agent Frameworks (Developers)
freemium
  • Leading framework for RAG and data agents
  • Connect LLMs to your documents & APIs
  • Agentic document workflows
  • Open-source with a hosted cloud
Visit

Google Agent Development Kit (ADK)

Agent Frameworks (Developers)
free
  • Open-source Python/Java framework from Google for building multi-agent systems
  • Native integration with Vertex AI Agent Engine and Gemini models
  • Model-agnostic — works with non-Google LLMs via LiteLLM
Visit

Head-to-head comparisons

Vercel AI SDK vs LangGraphVercel AI SDK vs CrewAIVercel AI SDK vs OpenAI Agents SDKVercel AI SDK vs Microsoft AutoGenVercel AI SDK vs LlamaIndexVercel AI SDK vs Google Agent Development Kit (ADK)