Framework

Vercel AI SDK

Streaming UX, tool calls, structured output.

6 patterns supported.

Patterns this framework supports natively

  • Streaming Typed EventsPush partial results to the client as typed events as they become available, rather than waiting for the full response.
  • Tool UseLet the LLM produce typed calls against an external toolkit instead of producing free-form text the surrounding system has to parse.
  • Structured OutputConstrain the model's output to conform to a JSON Schema (or similar typed shape).
  • Stop / CancelLet the user interrupt an in-flight agent run cleanly, releasing resources and surfacing partial state.
  • Citation StreamingStream citations alongside generated text so the UI can render source links in place as content appears.
  • Parallel Tool CallsAllow the model to emit several independent tool calls in one assistant turn; the host executes them in parallel.