AwesomeDataviz

BertViz

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

GitHubPyPI
GitHub stars
8.2K#78 in the directory
PyPI downloads / week
635
Commits, last 12 months
1
Contributors
5
Last commit
Latest release
v1.4.1Jun 1, 2025

Overview

BertViz is an open-source ML visualization tool released under the Apache-2.0 license. Its GitHub repository has 8,193 stars, 888 forks, and 5 contributors. It is maintained with 1 commit in the last 12 months; the most recent commit was on Jan 8, 2026. The latest release, v1.4.1, was published on Jun 1, 2025. On PyPI it is downloaded about 635 times per week.

Its GitHub description: BertViz: Visualize Attention in Transformer Models

GitHub topics: natural-language-processingmachine-learningvisualizationneural-networkpytorchnlpberttransformergpt2robertatransformers

Install

PyPI
pip install bertviz
v1.4.1

Development activity

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

00.51 Oct 2025 Nov Dec Jan 2026 Feb Mar Apr May Jun Jul Aug Sep
00.51 Oct 2025 Jan 2026 Apr Jul
1 commit from Oct 2025 to Sep 2026.
Show data as a table
MonthCommits
Oct 20250
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Dec 20250
Jan 20261
Feb 20260
Mar 20260
Apr 20260
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Jun 20260
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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 BertViz 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 BertViz

  • Netron

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  • PlotNeuralNet

    LaTeX code for drawing neural network architecture diagrams.

    25K starsTeXMIT

  • Opik

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

    22.4K starsPythonApache-2.0

  • Phoenix

    ML observability in a notebook with UMAP visualizations

    11.7K starsPythonElastic-2.0

  • FiftyOne

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

    11.1K starsTypeScriptApache-2.0

  • Visdom

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

    10.3K starsPythonApache-2.0

BertViz FAQ

Is BertViz open source?

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

Is BertViz still maintained?

Mostly. BertViz had 1 commit in the last 12 months; the latest was on Jan 8, 2026.

How do I install BertViz?

From PyPI: pip install bertviz.

What are the best alternatives to BertViz?

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

What language is BertViz written in?

BertViz is primarily written in Python, according to GitHub.

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