HeyDeer is AI code review for GitHub pull requests: frontier-quality reviews, affordably priced for agent-scale PR volume. AI writes code. HeyDeer reviews it.
Frontier-quality reviews
Every review runs on frontier AI models. Separate reviewers examine each change, then HeyDeer verifies their findings against the code and merges duplicates before posting, so the comments on your PR are worth acting on. The approach was shaped by more than 6,000 internal review runs.
Low price, no seat fees
Unlimited developers and repositories share one workspace plan. The Free plan includes 1,000 credits in your first month and 300 every month after, with no credit card. Paid plans start at $12 a month. You pay for actual review usage, and a typical Standard review costs under $1. Public open-source repositories are reviewed free up to a fair-use limit.
From finding to fix PR
Choose the findings to fix, and HeyDeer writes the change and opens a fix PR against your branch. Your branch stays unchanged until you merge.
Your team’s rules in every review
Add repository checks as Markdown files in .agents/checks; each one gets a dedicated AI reviewer. Pick Standard depth for everyday changes or Deep for complex code, and run reviews automatically or with @heydeer review.
Reviews run in isolated environments with zero data retention at model providers. Try the interactive demo without signing up.
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