Side-by-side comparison

Open-source LLM observability proxy: one-line integration for logging, costs, caching and rate limits.

Open-source LLM engineering platform for traces, evals, prompt management and metrics; now part of ClickHouse.

LangChain's hosted platform for tracing, evaluating and monitoring LLM apps and agents, framework-agnostic.

Open-source AI observability and evaluation tool built on OpenTelemetry and OpenInference.