kitio.aiAdded Oct 28, 2026
AI SDK
FreeVercel's open-source TypeScript toolkit for AI apps and agents
What is AI SDK?
AI SDK is an open-source TypeScript library from Vercel for building AI applications and agents, with one API across more than 100 models and providers. It handles streaming, tool calls, structured output and fallbacks, and works with React, Next.js, Vue, Svelte and Node.js.
AI SDK Core offers functions for generating text, structured objects and tool calls, plus image generation, speech, transcription and video. Switching providers is a one-line change, and it is compatible with Vercel AI Gateway for routing to any model through one endpoint.
UI hooks help stream chat interfaces in front-end frameworks including Angular, Nuxt and Solid. Docs include recipes, templates, a tools registry and a playground, and the project has a large contributor base on GitHub.
Features
- Unified provider API
- Streaming responses
- Tool calling
- Structured output
- Built-in fallbacks
- Framework UI hooks
Tags
Releases
+ Submit new release- Listed
AI SDK was added to the directory.
Organization
Vercel
🇺🇸 United States
Listed by kitio.ai · unverified owner
Pricing
- Pricing model
- Free
- Paid options from
- 100% free
Sponsored
Your AI tool here
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Pros and cons
Pros
- Swap model providers easily
- Works across many JS frameworks
- Free and open source
Cons
- TypeScript and JavaScript only
- Fast-moving API between versions
- Model usage is billed by providers
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Q&A
What is AI SDK?
AI SDK is an open-source TypeScript library from Vercel for building AI applications and agents, with one API across more than 100 models and providers. It handles streaming, tool calls, structured output and fallbacks, and works with React, Next.js, Vue, Svelte and Node.js.
Which frameworks does AI SDK support?
It works with React, Next.js, Vue, Svelte, Angular, Nuxt, Solid and plain Node.js.
Do I need Vercel hosting to use AI SDK?
No. It is an open-source npm package installed with npm install ai, and it can call providers directly or through AI Gateway.
How much does AI SDK cost?
AI SDK is 100% free.
Is there a free version of AI SDK?
Yes. AI SDK is completely free to use.
What are the main features of AI SDK?
Unified provider API, Streaming responses, Tool calling, Structured output, Built-in fallbacks, Framework UI hooks.
Who makes AI SDK?
AI SDK is made by Vercel.
What are the best alternatives to AI SDK?
Popular alternatives include Trigger.dev, OpenHands, Visual Studio Code.