Langfuse
Trace model calls, compare evaluations and version AI prompts.
Overview
Langfuse is an open-source AI engineering platform for observability, prompt management and evaluations. Choose cloud or self-hosting, create a project and instrument a development application with the supported SDK. Review which inputs and outputs are recorded before enabling production tracing.
Observability · Prompts · Evaluation
Install for free from the official publisher
Original source & installation instructions
The self-hosted community option is free to obtain; hosting and managed-cloud tiers are separate. Traces may contain sensitive content.