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    LangSmith preview

    LangSmith Pricing and plans 2026

    Debugging, tracing, and evaluation for LLM applications.

    LangSmith

    ToolTrim Verdict
    4.5/5
    Must-have

    LangSmith pays for itself once observability meaningfully cuts API costs; for prototyping, the free Developer tier suffices.

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    How much does LangSmith cost?

    Free0 €

    Free or open source depending on usage

    Paid plan

    Paid options may apply depending on hosting, team, or volume