# TanStack AI 1.0 stabilizes its core; the agent harness remains experimental

Canonical source : [TanStack AI 1.0 stabilizes its core; the agent harness remains experimental](<https://sebastien.rigaux.be/en/tech-watch/links/tanstack-ai-10-stabilizes-its-core-the-agent-harness-remains-experimental>)

TanStack AI 1.0 stabilizes its core APIs for combining chat, tools, media, and integrations across multiple providers and UI frameworks. Tree-shakable adapters and end-to-end tests using deterministic fixtures check the flows without live model calls.

The agent harness adds durable sessions, interrupts, and background work, but remains 0.x and may change in minor releases. Upgrading requires moving the stable packages together and supplying a `threadId` explicitly; passing the type check does not migrate persisted conversations or files.

- Selected on : 2026-10-30

- Resource publication : 2026-10-23

- Entry updated : 2026-11-07T20:32:37+0000

- Format : Article

- Source language : EN

- Credit : co-authored by Alem Tuzlak, Jack Herrington, Tom Beckenham, and Tanner Linsley

- Found via : [This week in React](<https://thisweekinreact.com/>)

Original resource : [TanStack AI 1.0 stabilizes its core; the agent harness remains experimental](<https://tanstack.com/blog/tanstack-ai-1-0>)

Tags : TanStack AI · [LLMs](<https://sebastien.rigaux.be/en/tech-watch/tags/llms>) · [AI Agents](<https://sebastien.rigaux.be/en/tech-watch/tags/ai-agents>) · [TypeScript](<https://sebastien.rigaux.be/en/tech-watch/tags/typescript>) · [Testing](<https://sebastien.rigaux.be/en/tech-watch/tags/testing>)

Available versions : [Français](<https://sebastien.rigaux.be/veille/liens/tanstack-ai-10-un-coeur-stable-un-harness-encore-experimental>) · [English](<https://sebastien.rigaux.be/en/tech-watch/links/tanstack-ai-10-stabilizes-its-core-the-agent-harness-remains-experimental>)

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