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Langfuse

Open source agent evals and observability

An MIT-licensed open source LLM engineering platform: tracing, evals, prompt management and datasets, self-hostable via Docker Compose, Helm or Terraform.

GitHub Stars 34,290
Forks 3,718
Data from: GitHubWebsiteUpdated: Sep 7, 2026

About Langfuse

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observabilitymonitoringdebuggingopen-source