AI Observability

Trace, evaluate, and monitor LLM calls, agent steps, and production workflows.

Provider: Langfuse Pricing: Free self-hosted tier; managed cloud from $49/month Best for: Teams running agents in production that need tracing, evals, and cost monitoring

Langfuse captures every LLM call, tool invocation, and agent step. It supports prompt versioning, evaluation datasets, and cost tracking across providers.