assistant-ui
A TypeScript and React library for building AI chat interfaces with streaming, tool calls, attachments and human approval controls.
About assistant-ui
Application teams need chat components and conversation state that connect to their existing model backend.
Who it’s for
- React developers building AI chat interfaces
- Product teams adding interactive agent workflows
When to consider it
Consider assistant-ui when you want composable chat components with adapters for your existing AI backend.
Tradeoffs & limitations
- The library is MIT licensed and requires integration with a model backend. Optional assistant-cloud persistence includes 200 monthly active users on its free plan; Pro is $50 per month for 500, then $0.10 per additional monthly active user.
SOTA overview · Documentation-based assessment · Sources & review method
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Sources & review method
Documentation-based assessment · Oct 4, 2026 · Prepared with AI assistance; not a hands-on benchmark.
Checked by SOTA · AI-assisted documentation review. Selection advice is our assessment; verify current requirements for your deployment.
Import history & original evidence
assistant-ui official website
A TypeScript and React library for building AI chat interfaces with streaming, tool calls, attachments and human approval controls.
Based on official pages and announcements checked on 2026-10-04. No hands-on test, performance benchmark or popularity ranking is claimed.