Langfuse

OpenTelemetry instrumentation for LLM frameworks

Observability for LLM apps built on OpenTelemetry

AI performance monitoring with an open-source evaluation engine

Simulation and evaluation platform for AI agents

Observability and evaluation for AI agents

Open-source evaluation and tracking for LLM experiments

Evaluation and guardrails for generative AI in production

Comet's open-source LLM tracing and evaluation suite

Open-source tracing and evaluation for LLM apps