Opik (Comet)
Open-source LLM evaluation and tracing platform from Comet, combining trace logging, eval metrics and CI-friendly test suites.
| Category | Observability & Tracing |
| Open source | Yes |
| Self-hostable | Yes |
| Pricing model | freemium |
| Pricing notes | Apache-2.0 self-host free; Comet cloud free tier + paid plans |
| Framework integrations | openai-sdk, langchain, llamaindex, litellm, dspy, haystack |
| Funding / ownership | Backed by Comet ML ($50M Series B, 2021) |
Pricing/feature source: https://www.comet.com/site/pricing/