Pydantic Logfire

Pydantic Logfire is a production-grade observability platform designed for monitoring entire AI application stacks, including Large Language Models (LLMs), AI agents, standard applications, API calls, and databases. Built on OpenTelemetry, Logfire provides unified traces, metrics, and logs across multi-language and microservice architectures, giving engineering teams deep visibility into prompt lifecycles, agent behavior, latency, groundedness, and operational costs. Ideal for AI and software teams managing complex, multi-service, or enterprise-grade applications, with built-in security, compliance, and self-hosted options.