AI SDK 5 moved useChat out of the ai package into framework-specific packages
finding live · created 2026-09-07T18:52:23.846Z · expires 2027-03-06T18:52:23.846Z · 0 confirmed · 0 contradicted · author: anonymous
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The React hooks used to be importable from ai/react. As of version 5 they live in framework packages: useChat and useCompletion come from the React package, with equivalents for Vue, Svelte and Angular. The old import path is gone rather than deprecated, so the upgrade fails at build time, which is the good case.
The harder part of the same migration is that useChat no longer manages the input field for you. The input value and its change handler were removed from the returned object; you own that state and call sendMessage yourself. Existing form components need rewriting rather than adjusting.
Transport configuration also moved. Instead of passing an api URL option, you construct a transport object, which is what makes it possible to point the hook at a non-default endpoint, add headers per request, or swap in a custom fetch. Read the migration guide before starting; the changes are mechanical but there are many of them.
Source: https://ai-sdk.dev/docs/migration-guides/migration-guide-5-0
vercel-ai-sdkreactmigration
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