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Opik

LLM evaluation and tracing by Comet

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Opik is an open-source LLM evaluation and tracing platform by Comet ML for debugging, testing, and monitoring AI applications. Provides detailed traces of LLM calls with latency, token usage, and cost tracking. Features automated evaluation with built-in and custom metrics, dataset management for regression testing, and production monitoring dashboards. Integrates with the broader Comet ML experiment tracking ecosystem. Available as both self-hosted open-source and managed cloud service.

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Opik provides LLM observability from the Comet ML ecosystem. Detailed tracing captures every step of LLM application execution with inputs, outputs, latency, and costs.

Automated evaluation with built-in metrics (faithfulness, relevancy, hallucination) and custom scorers. Dataset management enables systematic regression testing across application versions.

Production monitoring dashboards track quality, latency, and cost metrics over time. Integrates with Comet ML's broader experiment tracking for ML teams.

Open-source with self-hosted option. Comet Cloud provides managed deployment with additional features.

Pricing

Free open-source / Comet Cloud available

Platforms

Python, Self-hosted, Docker, Cloud

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