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useCompletion

As explained in Build AI-Enhanced Web Apps

useCompletion is a Vercel AI SDK React hook that manages text-completion requests and their streamed results.

useCompletion is a Vercel AI SDK React hook for building text-completion interfaces. It manages completion requests and streamed results so the UI can update as generated text arrives. section 3.2.2 section 3.5

Use the hook as part of a streaming completion architecture:

  • Connect the React interface to an AI SDK completion endpoint. section 3.2.2
  • Let the SDK handle asynchronous streaming, connection management, buffering, and UI state updates. section 3.5
  • Pair the client hook with SDK generation utilities such as streamText, which exposes generated text incrementally. section 3.2.2

Streaming completion flow

A server-side streamText call returns an async text stream, while the React hook provides the client-side mechanism for consuming streamed completion results and updating the interface. section 3.2.2

How Build AI-Enhanced Web Apps covers it

How deep it goes
Explains the hook's role within streaming and state management but does not document its API options or implementation.
Examples
Uses a streamText example that iterates over generated text chunks and a related useChat React integration example.
What it assumes
Assumes a React web-application context and introduces streaming through Vercel AI SDK abstractions.
What you can do after
Builds React completion experiences without manually managing streamed-response processing and UI updates.
How it connects
Connects text completion with streamText, useChat, streaming responses, provider abstraction, and language model specification.
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Related concepts

This explainer was generated by Manning's knowledge graph from the text of Build AI-Enhanced Web Apps. The section links point to the parts of the book it draws on.