Vercel AI SDK
A TypeScript library for streaming model responses into a web UI. Hooks handle the streaming and state so you do not build them by hand.
Tested on GPT-5 ·
LIBRARY · Free, open source
The SDK solves one problem well: a streamed model response appears token by token in a React or Next.js interface, with loading and error states already handled. For a chat interface that covers most of the frontend work a bare API call leaves you.
Several model providers sit behind one interface, so switching providers is mostly a config change and no rewrite. That helps if you expect to compare models in production and do not plan to commit to one.
Notes from the author
Use the built-in rate limiting and error boundaries and skip writing your own. Streaming fails in ways you will not think of: a connection dropped mid-response, a half-delivered token. Users find them in production first.
For information only, not professional advice. You use it at your own risk and we are not liable for any loss or damage. See the disclaimer.
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