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Spanlens

Open source LLM observability and monitoring

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About Spanlens

Spanlens is an open-source observability and monitoring platform designed for LLM applications using OpenAI, Anthropic, and Gemini. It provides essential tools for request logging, cost tracking, and agent tracing. The software is self-hostable and released under the MIT license, allowing teams to maintain control over their monitoring data.

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