Choosing an AI code review tool starts with three questions: is the code in a public or private repository, is the team already using GitHub Copilot, and roughly how many pull requests arrive each week? Different answers lead to different tools. Settle those three questions first, then look at price — otherwise it is easy to pay for features you will never use.
Three mainstream tools, what each one is for
| Tool | Free starting point | Paid starting point | Best for |
|---|---|---|---|
| GitHub Copilot code review | The free plan does not include review | Pro from $10 per month, review included | Small teams already working inside GitHub |
| CodeRabbit | Free review on public repositories | Essentials $24 per person per month, billed annually | Teams that want a quick setup with no fuss |
| Qodo | 14-day trial, no permanent free tier for private repositories | Credit-based billing, from about $30 per month | Teams that need generated tests and care about compliance |
Prices follow each vendor's current pricing page, and the billing units differ a lot: CodeRabbit charges per person who opens pull requests, Qodo charges credits per review, and Copilot bundles review with code completions and chat in one subscription. For teams with many pull requests, per-review billing can cost more than per-seat billing, so run the numbers against your own monthly pull request count before signing up.
Split by team size, then check whether it can enter your repository
An individual maintaining a public project should start with CodeRabbit's free tier — install it and inline comments appear on pull requests. A team of five to twenty people that already uses Copilot Pro across the board should not add another bot yet: switch on Copilot's review first, get used to it, and only then decide whether to switch. Teams whose code cannot leave the internal network, or that must pass a compliance audit, should focus less on how nicely the review reads and more on whether self-hosting and an enterprise edition are supported, and whether code will be used for training — that needs to be written into the contract.
Who it is not for
Teams with fewer than five pull requests a week should not buy paid review first: reading them by hand is faster, and it helps onboard newcomers. Teams hoping a bot will sign off a merge in place of a person are not a fit either: it will miss business-logic errors and raise plenty of plausible-looking issues, and responsibility still rests with a human. A steadier alternative is to get local static checks and tests running first, use the review bot only as a second pair of eyes, and require a person to actually read the change before merging.
