Langfuse
Open sourceOpen source observability and prompt management for LLM apps
Launched 38 months agolangfuse.com
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About Langfuse
Langfuse is an open source engineering tool for teams running LLM applications. It captures traces of every call, so developers can inspect prompts, responses, cost and latency for a request. Alongside tracing it offers evaluation, prompt versioning and metrics, which covers development through production. Teams can host it themselves or use the cloud service, with a free tier to start. It suits developers who want to debug and improve chatbots and agents with data instead of guesswork.
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