# Opik

> Opik is Comet's Apache-2.0 open-source platform for LLM observability, evaluation and agent tracing; its README reported 20,000+ GitHub stars as of mid-2026.

Comet's open-source LLM observability, evaluation and agent tracing platform.

- **Category:** Observability
- **License:** Apache-2.0
- **Language:** Python
- **Self-hosted:** Yes
- **GitHub stars:** 22370 (2026-10-04)
- **Repository:** https://github.com/comet-ml/opik
- **Last verified:** 2026-10-04

> Caveat: Star counts differ by source: Comet's landing page showed ~15.6k while the README and third parties reported 20k-21.8k.

Source: https://agent.c8.fit/tools/opik/