LangChain launches LangSmith Fine-Tuning and smithtune CLI to turn traces into tuned models
LangChain · x · 2026-09-25
LangChain introduced LangSmith Fine-Tuning and the smithtune CLI (public beta), a single workflow for fine-tuning:
- Identify and export trajectories from LangSmith
- Transform traces into SFT-ready training examples
- Fine-tune open models via Baseten and Fireworks AI
- Evaluate back in LangSmith
The pitch: use production traces to train specialized models that cut cost and latency.
Related event: LangChain Launches LangSmith Fine-Tuning Beta with smithtune CLI(11 posts)→
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