By using this dual-model approach for summarization and filtering out trivial changes, we save almost 50% on costs.

Upon launching our free service for open source projects, we noticed individual developers using it as a coding co-pilot by making hundreds of incremental commits for continuous feedback. CodeRabbit, designed for thorough code reviews unlike tools such as GitHub Copilot, incurs high costs when used in this manner. Therefore, we implemented hourly rate-limits on the number of files and commits reviewed per user, to control excessive usage without compromising user experience. These limits vary across different product tiers. For example, we set more aggressive limits for open source users compared to trial and paid users.

Rate limit metrics for open source users

We believe that building user habits around AI involves seamlessly augmenting existing workflows. Therefore, AI code reviews must be continuous: they should trigger as soon as a PR is opened and incrementally update the summary and generate review comments as more commits are added.