LangChain launches SmithTune: fine-tune custom models from LangSmith traces

LangChain · x · 2026-09-25

LangChain launched LangSmith Fine-Tuning and the smithtune CLI in public beta, partnering with Fireworks AI and Baseten. The service lets developers fine-tune custom models directly from their existing LangSmith traces to cut cost and latency, with comparison and deployment handled in-platform.

Related event: LangChain Launches LangSmith Fine-Tuning Beta: Turn Agent Traces into Custom Models(9 posts)→

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