llmtracer-sdk is an open-source Python SDK that enables developers to automatically track the cost, latency, and usage of large language model (LLM) APIs across different providers. It is designed for developers who need observability and analytics for their LLM-powered applications.
llmtracer-sdk is a LLM eval & observability project. It helps developers monitor and analyze the cost and performance of LLM API usage across multiple providers. It is built as an open-source project for developers using LLM APIs. llmtracer-sdk is open source under the MIT license. It ships for the web, the command line, and API.
Behind llmtracer-sdk is llmtracer, and it first shipped in 2026. Among its 5 catalogued features are cost tracking, latency monitoring, and provider-agnostic.
Summary written by a language model from the project’s public pages.
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