Last updated 07-22-2026
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CodeReviewBot
CodeReviewBot is an automated code review service for teams that work in GitHub. It connects to your repositories and leaves detailed review comments on pull requests, surfacing bugs, security issues, performance problems, and other quality concerns before code merges.
The product runs on large language models including OpenAI GPT-4, GPT-4o, and Google Gemini. You install the CodeReviewBot GitHub App, authorize access to selected repos, and reviews trigger automatically when pull requests are opened. A separate browser tool lets you paste code snippets for on-demand feedback with language and tone controls.
Software engineers, dev teams, and open source maintainers who want consistent review coverage without adding manual overhead are the main audience. Public OSS repos get free reviews, while private projects can start on a limited free tier or upgrade for unlimited usage and custom review rules.
Leaves automated review comments on GitHub pull requests when you open or update them
Catches bugs, security flaws, and performance issues in the diff before merge
Paste-and-review tool supports 16 languages plus formal, educational, friendly, or concise tones
Pro teams can define custom style guides and repository-specific review rules
Code snippet suggestions stay off by default so proposed fixes stay in your hands
30-day Pro trial with no credit card required at signup
Native GitHub App workflow means reviews show up directly on pull requests.
Free tier covers public open source repositories with no monthly cap on reviews.
Pro plan includes custom style guides and unlimited private repo reviews for $25 per month.
Browser-based review tool lets you test the service without connecting a repository first.
GitHub is the only listed integration; there is no documented support for GitLab or Bitbucket.
Free private repos are limited to 10 reviews per month.
Enterprise features such as self-hosted deployment require a custom sales conversation.
Long pasted snippets in the web tool require GitHub sign-in to exceed the length limit.
What models does CodeReviewBot use?
CodeReviewBot uses several large language models for code review, including OpenAI GPT-4, GPT-4o, and Google Gemini. The site does not let you pick a single model per review; the service selects from this set behind the scenes.
Can I try CodeReviewBot for free?
Yes. CodeReviewBot offers a free Hobby plan for public open source repos and up to 10 reviews per month on private personal repos. The Team (Pro) plan includes a 30-day free trial or 40 reviews, and you can also test reviews in the browser-based code review tool.
Does CodeReviewBot use my private code for training?
CodeReviewBot states it never uses private code to train models. It may use feedback signals such as reactions on bot review messages or review thread replies to improve the service.
How much does CodeReviewBot cost?
CodeReviewBot has a Free / Hobby plan at $0 per month for public OSS repos and limited private use. The Team (Pro) plan starts at $25 per month with unlimited reviews on private repositories. Enterprise pricing is custom and requires contacting sales.
Does CodeReviewBot integrate with GitHub?
Yes. CodeReviewBot is built around GitHub. You sign in with GitHub, install the CodeReviewBot GitHub App on selected repositories, and reviews run on pull requests in those repos.
Will CodeReviewBot post code snippets in review comments?
By default, CodeReviewBot describes proposed changes in text and leaves implementation to you. You can enable code snippet suggestions per repository in the dashboard if you want inline fix examples.