Testing & monitoringFree tier

Langfuse

by Langfuse

Open-source tracing and testing for AI apps, which you can host yourself.

Prices and features change often — check the official site for current plans. This listing is not an endorsement.

Best for

Seeing every step of your agents and building test sets.

How to choose · Testing & monitoring

Look for full traces, easy dataset building from real failures, and the ability to export your data.

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