Opik review
A broad, cost-conscious stack for tracing, evaluation, prompts, monitoring, and agent debugging.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Opik is an open-source LLM observability and evaluation platform from Comet for teams building chatbots, retrieval-augmented generation pipelines, and multi-step agents. It records model calls, tool invocations, retrieval steps, and agent actions, giving developers a view of application behavior from development through production monitoring. The platform combines tracing with evaluations, prompt management, human feedback, and token and model cost tracking.
Its pricing structure supports both self-hosted and managed deployments. The Open Source plan is free and includes the full AI observability and agent testing feature set for teams running their own deployment. Free Cloud is also free, with agent tracing and analysis, Test Suites and assertions, and an Agent Playground. Pro Cloud costs $19 per month and adds customizable monthly span limits and data retention periods to the Free Cloud features. Enterprise adds flexible deployments, service accounts, view-only users, single sign-on, dedicated support and SLAs, and security and compliance features.
The feature depth is the main reason to consider Opik. Teams can debug agent execution through graphs and traces, run experiments with datasets, assertions, and LLM-as-a-judge metrics, version and evaluate prompts, perform online evaluations, and collect human annotation and feedback scores. Integrations span OpenAI, Anthropic, Google Gemini, AWS Bedrock, LangChain, LangGraph, LlamaIndex, CrewAI, Haystack, Ragas, LiteLLM, OpenTelemetry, Dify, Flowise, and Spring AI. Opik suits teams that want a broad observability and evaluation layer with flexible deployment choices. Teams seeking only basic request tracing may find its wider toolset unnecessary.
Opik pros and cons
- Where it wins
- Free self-hosted and cloud options cover core observability needs
- Traces model calls, tools, retrieval steps, and agent actions
- Tracks evaluations, prompts, human feedback, tokens, and model costs
- Where it doesn't
- Enterprise pricing is custom rather than published
- Self-hosted deployment requires your own infrastructure
- Its broad scope may exceed teams needing only basic tracing
Opik fact sheet, pricing and score →
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