Devgen is an AI research assistant for GitHub, delivered as a Chrome extension. Instead of cloning a repository and grepping through it, you open a GitHub page, right-click, and pull the relevant artifact into a chat: an issue describing a bug, a pull request under review, a single source file, or a specific commit. From there you can ask natural-language questions about how the code behaves, how files relate to one another, or what a proposed change would actually do.
The extension is deliberately context-driven. Only one issue, pull request or file can be added to the conversation at a time, which keeps answers focused on the item you are currently investigating rather than drowning the model in an entire repository. A newer version also adds GitHub link discovery, so while you are searching Google, reading Reddit threads or browsing documentation, Devgen can surface related open-source repositories found on the page.
Devgen works with open-source repositories and is published by the team behind devgen.xyz. Free users get GPT-4o mini with a monthly request allowance, while the Pro tier removes the GPT-4o mini cap and adds a monthly budget of Claude Sonnet 3.5 requests for harder reasoning tasks. It is aimed at developers doing code review, onboarding onto unfamiliar projects and triaging issues.
