What is TruLens?
Developer Tools · Free · Open source
TruLens instruments AI agents and applications with OpenTelemetry, providing traces and benchmarked LLM judges to score every step. It helps developers find agent failures, track latency and cost, and compare versions to optimize performance. The tool is open source and supports popular frameworks like LangGraph and LlamaIndex.
TruLens alternatives
The developer tools listed here closest to TruLens, by shared categories and tags and by how alike the two descriptions read. Not a ranking against TruLens — open one and judge for yourself.
LangfuseOpen source LLM engineering and observability platform
RespanLLM engineering platform for observability and evals
LiveBenchContamination-free LLM benchmark
LangChainFramework and platform for building LLM agents
MastraTypeScript AI framework for agents and apps
AgentaThe open-source workspace for your agents
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