Opik
ObservabilityOpen source · Apache-2.0★ 22,370（2026-10-04）Self-hosted
Comet's open-source LLM observability, evaluation and agent tracing platform.
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.
Caveat: Star counts differ by source: Comet's landing page showed ~15.6k while the README and third parties reported 20k-21.8k.
Key facts
| Category | Observability |
|---|---|
| License | Apache-2.0 |
| Language | Python |
| Self-hosted | Yes |
| GitHub stars | 22,370 (2026-10-04) |
| Last push | 2026-10-04 |
| Last verified | 2026-10-04 |
| Repository | https://github.com/comet-ml/opik |
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