observabilityOpen Source✦ Free Tier
Opik
Open-source LLM tracing and evaluation platform by Comet
⭐ 4,200 stars● Health 85 — ActiveApp Infrastructure
About
Opik is an open-source LLM observability platform from Comet that provides detailed tracing, prompt tracking, and automated evaluation for AI applications. One-line integration captures every LLM call, cost, and output with built-in eval metrics including hallucination detection.
Choose Opik when…
- •want OSS observability with built-in eval metrics
- •already using Comet for ML experiment tracking
- •need hallucination detection out of the box
Builder Slot
How do you see what's happening?Recommended for most stacks
Traces every LLM call, eval, and cost so you know exactly what your stack is doing
Dev Tools
Not applicable
App Infra
Recommended
Hybrid
Recommended
Other tools in this slot:
Stack Genome Detection
AIchitect's Genome scanner detects Opik in your project via these signals:
pip packages
opikenv vars
OPIK_API_KEYCOMET_API_KEYAlternatives to consider (2)
Pricing
✦ Free tier available
OSSFree
CloudFree tier + pay as you go
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