Comet (Opik)
Free tierThe AI Developer Platform for LLM observability, evaluation, and MLOps experiment tracking
Free tier available·Technical·API available·Open source
Key strengths
End-to-end LLM observability with real-time trace logging at high volumes30+ built-in LLM-as-a-judge eval metrics (hallucination, relevance, context precision)Open-source Opik platform with flexible cloud or self-hosted deploymentOllie coding agent auto-fixes agent code based on trace and eval insightsComprehensive MLOps experiment tracking across PyTorch, HuggingFace, Keras, and more
Free tier + paid plans
Self-hostable
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