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Opik

Comet's open-source (Apache-2.0) LLM observability and evaluation platform: traces for agents and multi-turn conversations, datasets and experiments with 30+ LLM-as-a-judge and heuristic metrics, pass/fail test suites, a PyTest integration for CI, online evaluation rules on production traces, guardrails and an agent optimizer. The full platform, backend included, self-hosts free; Opik Cloud is free for 25K spans a month.

llm-observabilityevalsopen-source
Category
Analytics & MonitoringProduct analytics, error tracking and observability.
Website
comet.comOfficial site, opens in a new tab.
Pricing
See official siteWe only list verified pricing.

Part of the AI Agent Infrastructure collection.

On the LLM observability and eval tools list.

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