LangChain launches LangSmith Fine-Tuning with smithtune CLI to train models from agent traces
LangChain · x · 2026-09-25
LangChain released LangSmith Fine-Tuning (public beta) and the smithtune CLI, which converts agent trajectories stored in LangSmith into SFT datasets, trains via Fireworks or Baseten, and evaluates back in LangSmith — an end-to-end pipeline for building specialized models that can match frontier models on specific tasks at lower cost and latency. Teams can run it manually or let a coding agent drive the whole process.
Related event: LangChain Launches LangSmith Fine-Tuning Beta with smithtune CLI(11 posts)→
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