AwesomeDataviz

Opik

Formerly CometLLM. Debug, evaluate, and monitor LLM applications with tracing and dashboards.

Website GitHubPyPI
GitHub stars
22.4K#22 in the directory
PyPI downloads / week
424.8K
Commits, last 12 months
4,323
Contributors
159
Last commit
Latest release
2.2.88Oct 2, 2026

Overview

Opik is an open-source ML visualization tool released under the Apache-2.0 license. Its GitHub repository has 22,373 stars, 1,841 forks, and 159 contributors. It is actively developed with 4,323 commits in the last 12 months. The latest release, 2.2.88, was published on Oct 2, 2026. On PyPI it is downloaded about 424.8K times per week.

Its GitHub description: Debug, evaluate, and monitor your LLM applications, RAG systems, and agentic workflows with comprehensive tracing, automated evaluations, and production-ready dashboards.

GitHub topics: open-sourcelangchainopenaiplaygroundprompt-engineeringllama-indexllmllm-evaluationllm-observabilityllmopshacktoberfesthacktoberfest2025

Install

PyPI
pip install opik
v2.2.88

Development activity

Commits per month to the default branch over the last 12 complete months.

0200400600 Oct 2025 Nov Dec Jan 2026 Feb Mar Apr May Jun Jul Aug Sep
0200400600 Oct 2025 Jan 2026 Apr Jul
4,323 commits from Oct 2025 to Sep 2026.
Show data as a table
MonthCommits
Oct 2025409
Nov 2025388
Dec 2025289
Jan 2026329
Feb 2026308
Mar 2026454
Apr 2026496
May 2026297
Jun 2026302
Jul 2026343
Aug 2026295
Sep 2026413

Popularity among Machine learning visualization tools

Netron 33.5K PlotNeuralNet 25K Opik 22.4K Phoenix 11.7K FiftyOne 11.1K Visdom 10.3K BertViz 8.2K
Netron 33.5K PlotNeuralNet 25K Opik 22.4K Phoenix 11.7K FiftyOne 11.1K Visdom 10.3K BertViz 8.2K
GitHub stars for Opik and the most-starred alternatives.
Show data as a table
ToolStars
Netron33,544
PlotNeuralNet25,009
Opik22,373
Phoenix11,704
FiftyOne11,143
Visdom10,318
BertViz8,193

Alternatives to Opik

  • Netron

    Viewer for neural network, deep learning and machine learning models.

    33.5K starsJavaScriptMITOpik vs Netron

  • PlotNeuralNet

    LaTeX code for drawing neural network architecture diagrams.

    25K starsTeXMITOpik vs PlotNeuralNet

  • Phoenix

    ML observability in a notebook with UMAP visualizations

    11.7K starsPythonElastic-2.0Opik vs Phoenix

  • FiftyOne

    Tool for visualizing, curating and evaluating computer vision datasets and models.

    11.1K starsTypeScriptApache-2.0Opik vs FiftyOne

  • Visdom

    Tool for real-time visualization and monitoring of live data such as ML experiments.

    10.3K starsPythonApache-2.0

  • BertViz

    Visualize attention in Transformer language models such as BERT and GPT-2.

    8.2K starsPythonApache-2.0

More comparisons: Netron vs Opik · Opik vs PlotNeuralNet · Opik vs Phoenix · FiftyOne vs Opik

Opik FAQ

Is Opik open source?

Yes. Opik is released under the Apache-2.0 license, and its source code is on GitHub.

Is Opik still maintained?

Yes. Opik is actively developed, with 4,323 commits in the last 12 months and the latest commit 2 days ago.

How do I install Opik?

From PyPI: pip install opik.

What are the best alternatives to Opik?

The most popular alternatives listed in Machine learning visualization tools are Netron, PlotNeuralNet, and Phoenix. See the full ranking.

What language is Opik written in?

Opik is primarily written in Python, according to GitHub.

Data: GitHub API, PyPI. Updated Oct 4, 2026.