EvalView vs LangSmith

LangSmith is strongest for observability, debugging, and the broader LangChain ecosystem. EvalView is strongest for regression testing: generate tests, snapshot behavior, diff tool paths, and block regressions in CI/CD.

Choose LangSmith when

• you want trace collection and debugging dashboards
• you are already deep in LangChain or LangGraph
• you want a broader platform for prompt iteration and agent development

Choose EvalView when

• you need AI agent regression testing
• you want golden baseline testing for agents
• you care about tool-call, sequence, output, cost, and latency diffs
• you want a lightweight CI gate instead of a larger platform decision

EvalView workflow

evalview generate --agent http://localhost:8000
evalview snapshot tests/generated --approve-generated
evalview check tests/generated

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