In simple English
This tool records every step your artificial intelligence program makes. It helps you find where your prompts fail or hallucinate wrong answers. You can run it on your own server for free under an open-source licence. It works with Python, JavaScript, and many popular agent frameworks. Setting up the full server takes some time and requires Docker.
What it is
Opik is an open-source platform for tracking, evaluating, and monitoring language model applications and multi-step agents. It provides a Python client library, a web dashboard, and a self-hosted backend.
What it is good for
Solo builders who want to debug complex AI agents, measure hallucination rates, and track token costs across different models without paying for a commercial cloud service.
- Full platform is open-source under the Apache-2.0 licence and free to self-host.
- Integrates natively with dozens of agent frameworks like LangChain, LlamaIndex, and CrewAI.
- Includes pre-built evaluation metrics to test for hallucinations and answer relevance.
- Running the full server locally requires Docker (a way to run a program inside its own sealed box, so it cannot break anything else on your server) and consumes significant RAM (random-access memory, the fast working memory your computer uses to hold open programs).
- Non-programmers will find the server setup and SDK integration challenging.
- Heavy production usage generates millions of traces that require careful database maintenance.
Checking console logs manually or paying for commercial AI monitoring tools
LangChain
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Serves text, vision, speech, image and video models from one self-hosted service that imitates the paid interfaces.
pip install opik opik configure