---
slug: "opik"
name: "Opik"
effect: "Traces agent runs and LLM calls, scores them with LLM-as-a-judge metrics and monitors production"
category: "eval-observability"
tier: "rising"
url: "https://www.comet.com/docs/opik/"
github: "comet-ml/opik"
pricing: "open-source"
license: "Apache-2.0"
tags: ["tracing", "evals", "self-hosted", "opentelemetry", "python", "typescript"]
platforms: ["linux", "macos", "windows", "docker"]
install_kind: "pip"
date_added: "2026-10-14"
rank: 26
rising_score: 38
stars: 22615
star_velocity: 18
velocity_basis: "since creation"
created_at: "2023-05-10T12:57:13Z"
pushed_at: "2026-10-15T02:46:57Z"
signals_status: "ok"
signals_fetched_at: "2026-10-15T05:02:47.137Z"
page: "https://agenttooldrop.com/tools/opik"
---

# Opik

Traces agent runs and LLM calls, scores them with LLM-as-a-judge metrics and monitors production

Category: Evals and observability. Tier: new and rising, rank 26 by new and rising score (38 of 100). Pricing: Open source. License: Apache-2.0.

Platforms: linux, macos, windows, docker.

## Why you would want it

Opik, built by Comet, logs nested traces through a `@track` decorator in Python, a TypeScript SDK or OpenTelemetry, so multi-step agent runs and tool calls show up as full trace trees. It adds datasets, experiments, LLM-as-a-judge metrics for hallucination, moderation and RAG, a PyTest integration for CI, online evaluation rules, dashboards and an Agent Optimizer SDK. The full platform, backend included, is Apache-2.0 and can be self-hosted with Docker Compose or Helm, or used on Comet's cloud.

## Best for

- Teams that want a fully Apache-2.0 self-hosted platform
- Agent tracing and evals in one tool
- Running LLM evals in PyTest

## Use it when

You want tracing, evaluation and production monitoring under one open source license you can self-host, or want your coding agent to read traces through Opik's MCP server.

## Skip it if

You only need lightweight offline tests; self-hosting runs a multi-container stack with databases and caches, and the alternative is a Comet account.

## Install

Install the Python SDK:

```sh
pip install opik
opik configure
```

Source: https://github.com/comet-ml/opik#readme

## Live signals

Fetched 2026-10-15T05:02:47.137Z (status: ok).

- Repository: comet-ml/opik
- Repository created: 2023-05-10
- Stars: 22,615 (GitHub's count; it cannot be authenticated)
- Stars per day, since repo creation: 18 (an average over the repo's life, not a growth rate)
- Forks: 1,859
- Open issues and PRs: 184
- License (GitHub): Apache-2.0
- Last push: 2026-10-15
- Latest release: 2.2.100 (2026-10-14)

## Links

- Website: https://www.comet.com/docs/opik/
- GitHub: https://github.com/comet-ml/opik
- Install instructions verified at: https://github.com/comet-ml/opik#readme
- Source for this entry: https://github.com/comet-ml/opik#readme
- AgentToolDrop page: https://agenttooldrop.com/tools/opik
- Full catalog (JSON): https://agenttooldrop.com/tools.json