Langfuse is a leading observability tool for tracing, evaluation, logging and prompt management.

Cloud platform with freemium plans -- read about them here: https://langfuse.com/pricing

Langfuse is one of the most popular open-source LLM Observability platform as per their public usage statistics.

Github Repo: https://github.com/langfuse/langfuse

Website: https://langfuse.com/

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LLM Observability specifically focuses on tools and packages that help measuring the cost, quality & security of LLM usage within organisations.

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