# Opik

> Open-source LLM evaluation and observability by Comet.

- Official site: https://www.comet.com/site/products/opik/
- Category: Prompt Management & Testing
- Pricing: Open Source
- Works with: Most LLM providers
- Tags: open source, evals, tracing
- Listed on TellPrompt: https://tellprompt.com/tool/opik

## About

Opik traces LLM calls, scores outputs with LLM-as-judge and custom metrics, manages datasets and tracks experiments — including prompt versions.

A good fit for RAG and agent workflows that need repeatable evaluation.