Langfuse
Open-source LLM observability, tracing and evals.
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About Langfuse
Langfuse is listed in our evals & observability category and is aimed at builders. Open-source LLM observability, tracing and evals. Pricing, as the maker states it: Open source + paid cloud. Maturity: Mature. We last checked the official link on 2026-10-14.
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