CommitAI: Your Offline Git Assistant Powered by Gemma 4

Meet CommitAI—a lightweight, fully local Git assistant that harnesses the power of Gemma 4 to automate commit messages, changelogs, and more. Built with privacy and efficiency in mind, it runs completely offline using Ollama, so your code never touches a cloud server. Whether you're a solo developer or part of a team, CommitAI streamlines your Git workflow and helps you stay in the zone. Below, we answer the most common questions about this innovative tool.

What is CommitAI and what problem does it solve?

CommitAI is a Python-based Git assistant that automates the tedious process of writing commit messages and maintaining changelogs. Developers often lose focus when switching from coding to crafting a meaningful commit message. CommitAI eliminates that context switch by reading your staged Git diff and generating a Conventional Commit message using a local AI model. It also updates the changelog automatically and executes the commit, so you only need to run git add and git commit—the AI handles the rest. This boosts productivity while keeping your workflow secure and offline.

How does CommitAI work step by step?

The process is simple and fully automated:

1. You stage changes with git add.
2. CommitAI reads the staged Git diff.
3. It sends the diff to a local Gemma 4 model via Ollama.
4. The model generates a Conventional Commit message and a changelog entry.
5. CommitAI updates the changelog file and executes the commit with the AI-generated message.

All of this happens in milliseconds, right on your machine. No data ever leaves your computer.

What makes CommitAI privacy-friendly and offline?

CommitAI is designed for complete privacy. It uses Ollama to run the Gemma 4 (E2B) model locally on your machine—no cloud APIs, no external services, no internet required. This means your code, diffs, and commit history never leave your laptop. The entire pipeline—from reading the diff to executing the commit—runs locally, making it ideal for sensitive projects or developers who prefer offline tooling. Even on a MacBook Air M2 with 8GB RAM, it performs smoothly with low latency.

Why was the Gemma 4 E2B model chosen?

The gemma4:e2b model was selected because it strikes a perfect balance for a CLI tool. It is lightweight enough to run on modest hardware (like a MacBook Air M2 with 8GB RAM) while still providing strong reasoning to summarize Git diffs accurately. Its low latency ensures that commit generation feels instant. Moreover, the E2B variant is optimized for local deployment, aligning perfectly with CommitAI’s goal of being privacy-first and offline. No external dependencies are needed—just Ollama and the model.

What features does CommitAI include?

CommitAI packs several developer-friendly features:

• AI-generated Conventional Commit messages based on your staged changes.
• Automatic changelog generation so you never miss updates.
• Git hook integration—set up once and git commit triggers the AI automatically.
• Fully local/offline workflow with no data leaving your machine.
• Rich CLI interface using the Python Rich library for beautiful terminal output.
• Privacy-friendly inference via local Gemma 4.

All these features work together to minimize friction and let you focus on coding.

How can I integrate CommitAI into my Git workflow?

Integration is straightforward. After installing CommitAI and setting up Ollama with the Gemma 4 model, you can add it as a Git hook. Once the hook is active, your normal Git workflow becomes: git add . then git commit. The AI automatically generates the commit message and updates the changelog. You can also run it manually via the CLI. The tool is designed to be unobtrusive—it works in the background and only steps in when you commit. Check the repository for a step-by-step setup guide.

What are the future plans for CommitAI?

The roadmap includes several exciting enhancements:

• PR description generation to automate pull requests.
• Multi-model support so you can choose different AI backends.
• Better diff summarization for more accurate commit messages.
• VSCode extension for in-editor convenience.
• Team changelog modes for collaborative projects.
• Interactive commit editing to tweak AI suggestions.

These features aim to make CommitAI an indispensable tool for every developer who values speed, privacy, and automation.