# Baseten — Fine-tune on your LangSmith traces with Baseten Loops

- Company: Baseten (baseten.co)
- Announced: 2026-09-24T18:29:02+00:00
- Category: capability-change
- Coverage: not counted
- Announcement: yes
- Group: announcements
- Source: https://www.baseten.co/blog/fine-tune-on-your-langsmith-traces-with-baseten-loops
- Record: https://forck.live/items/21700-fine-tune-on-your-langsmith-traces-with-baseten-loops
- Subject: Baseten

LangChain announced LangSmith Fine-Tuning, now in public beta, which uses an open-source CLI called smithtune to read LangSmith traces, convert successful runs into a supervised fine-tuning dataset, and train on Baseten Loops. The CLI can deploy the resulting checkpoint to a Baseten Dedicated Inference deployment. Training runs on dedicated GPUs in the user's own Baseten workspace, and billing goes to the user's Baseten account.

## Evidence

Verbatim from https://www.baseten.co/blog/fine-tune-on-your-langsmith-traces-with-baseten-loops:

> The CLI reads your LangSmith traces and turns the successful runs into a supervised fine-tuning dataset. Training then runs on Baseten Loops.

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