CodeRabbit reviews diffs.
Hyrax architects the system.
CodeRabbit is a strong pull request reviewer, with line comments, summaries and committable suggestions on every diff. Hyrax works one level up: it maps the codebase, decides what is worth changing, and delivers pull requests that are already verified.
- Hyrax audits roughly 400 of its own repositories.
- Free plan: full access, up to 100 PR reviews a month, a $30 starter credit, and $10/month ongoing.
Verified end to end, with no CodeRabbit handoff
What changes when Hyrax runs above the tools.
The codebase, not the diff
CodeRabbit sees the change in front of it. Hyrax audits the whole repository, so problems that no single pull request touches still surface.
Verified before it arrives
Every change runs the project baseline tests, build and lint, and passes a second reviewer agent, before the pull request exists.
Context that compounds
The map of the codebase lives in the repository and strengthens with every merge, so the next decision starts from everything learned before it.
How Hyrax and CodeRabbit make decisions.
| Decision criteria | CodeRabbit | Hyrax |
|---|---|---|
| Unit of work | The pull request. Review runs when a diff opens. | The whole repository, audited continuously across six domains. |
| Codebase context | Builds review context per diff, with repository learnings and syntax tree analysis. | A durable map committed to the repository as HYRAX.md and .hyrax/discovery, so it strengthens as the codebase changes. |
| Output type | Line comments, review summaries and committable suggestions. | Verified pull requests, plus issues ranked by severity and effort. |
| Verification | Suggestions are proposed on the diff. The team runs the checks. | Baseline tests, build, lint and a second reviewer agent run against the project itself before a pull request opens. |
| Human control | The team applies suggestions and merges. | A human approves and merges every pull request. Hyrax never merges on its own. |
| Delivery surface | GitHub, GitLab, Azure DevOps and Bitbucket pull requests. | GitHub pull requests, with issues and posture in the Hyrax console. |
| Pricing model | Per seat, commonly around $24 per developer per month. | Free plan with a $30 starter credit and $10/month ongoing. Paid is $30 per user per month and each paid user gets $30/month of credits. |
Read how CodeRabbit describes itself: www.coderabbit.ai(opens in a new tab)
Comments on a diff, or a verified pull request.
- 01A pull request opens and CodeRabbit reads the diff.
- 02CodeRabbit returns comments, summaries and suggested changes.
- 03The team interprets the feedback, makes the edits, and merges.
- 01Maps the codebase and keeps the map in the repository
- 02Applies architectural judgment across six domains
- 03Opens a verified pull request that a human merges
GitHub-native. Human-controlled. Verified before merge. No training on customer code.
From install to the first verified pull request.
Install the GitHub App
Grant read access to the repositories in scope. No card is required to start.
Hyrax maps the repository
Discovery writes HYRAX.md and .hyrax/discovery into the repository, so humans and AI tools read the same context.
Review the first pull request
Approved upgrades arrive as verified pull requests. A human merges every one.
Both tools solve real problems.
Choose CodeRabbit if
The priority is fast, thorough feedback on every pull request, and the team wants a reviewer that comments inline across several Git providers. CodeRabbit is very good at that job.
Choose Hyrax if
The concern is the codebase rather than the diff. Hyrax surfaces what no single pull request touches, verifies each change against the project tests, and delivers work that is ready to review.
Per seat, with a free plan for limited review volume.
Free plan with a $30 starter credit and $10/month ongoing. Paid is $30 per user per month, and each paid user gets $30/month of credits.
Questions about CodeRabbit and Hyrax.
Does Hyrax work alongside CodeRabbit?
Yes, and most teams run both. CodeRabbit keeps doing its job. Hyrax works at the level of the whole codebase, decides what is worth changing, and delivers verified pull requests. Nothing about the CodeRabbit setup has to change.
What does Hyrax change in the repository?
Discovery writes HYRAX.md and a .hyrax/discovery directory, which document the architecture, conventions and risk areas of the codebase. Everything else arrives as a normal pull request on its own branch. Hyrax has no write access to the default branch.
How does pricing work?
The free plan includes full access, a $30 starter credit and $10/month of credits ongoing, with no card required. The paid plan is $30 per user per month, and each paid user gets $30/month of credits. Pull request reviews are included on every plan.
What happens after signup?
Installing the GitHub App and granting access to a repository takes a few minutes. Hyrax maps the codebase, then runs the first audit and returns issues ranked by severity and effort. The first verified pull requests follow once an audit is approved.