LangSmith Engine v2 adds red teaming and auto-validated fixes after analyzing 70M traces
LangChain · x · 2026-09-28
LangChain shipped LangSmith Engine v2, deepening automation in agent debugging. Since launching in May, Engine has analyzed over 70M traces and diagnosed tens of thousands of issues. V2 adds three capabilities:
- Proactive red teaming: surfaces agent bugs and prompt issues before they hit production
- Harder-to-spot detections: inefficient agent paths plus trends in error rate, latency, and cost
- Auto-validated fixes: proposed prompt and code fixes are tested in your environment before human review and deployment
Engine is an in-platform agent that scans production traces, groups related traces into issues, and attaches root causes, proposed fixes, ground-truth examples for eval datasets, and ongoing monitoring.
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