Opik
Free tierOpen-source AI observability & evaluation platform for the agentic era
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Recent changes
- Plans updated: Free tier available (no credit card required); enterprise plan available (contact sales). Open-source version is free to self-host.
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Opik is an open-source (Apache 2.0) AI observability and evaluation platform purpose-built for LLM applications, RAG pipelines, and agentic workflows. It provides end-to-end agent tracing and debugging, LLM-as-a-judge evaluation with 30+ built-in metrics, and production monitoring with guardrails and PII protection. Opik integrates natively with Claude Code and Codex, offering cost intelligence specifically for coding agents. It can be self-hosted or run locally, and ships with an automated code-fix assistant (Ollie). The platform targets AI/ML developers and enterprise teams who need deep visibility into agent behavior, evaluation pipelines, and production LLM costs — without vendor lock-in.