Bifrost

A prompt management and debugging platform for LLMs, providing prompt logging, request tracking, replay capabilities, and debugging tools to help teams systematically manage LLM interactions and optimize prompts.

Phoenix is an open-source observability and evaluation tool for LLM and agent applications, supporting online tracing and offline diagnosis.

An observability platform for AI agents that tracks model calls, tool executions, task trajectories, and runtime costs.

Opik is an open-source LLM observability platform providing agent tracing, evaluation testing, and prompt experiment management to help developers monitor and optimize AI agent systems.