Hey Product Hunt community! I’m Merrill, co-founder & CEO of Graphite. LLMs have transformed the way we build software over the past few years, making us more productive engineers than ever. We’re writing so much more code with AI that our previous tools & processes for reviewing, testing, and deploying code changes are struggling to keep up with the volume of pull requests. Graphite Reviewer is an AI code review companion designed to help you review pull requests as quickly as you can write—or generate—code. Think of Graphite Reviewer as an always-online teammate, that delivers consistent, high-signal, actionable feedback on every pull request in seconds. Best of all, Reviewer is built directly into your Graphite dashboard, where you already give and receive feedback, and it seamlessly syncs with GitHub. What sets Reviewer apart is our relentless focus on eliminating the noise and hallucinations that are all too common with other AI tools. AI only feels like magic when it’s consistently helpful and trustworthy, and Reviewer has achieved a <3% false-positive rate across tens of thousands of code changes reviewed. We can’t wait for you & your team to try out Graphite Reviewer - here’s what you can expect: 👀 A second pair of eyes: Graphite Reviewer automatically scans opened PRs for bugs, logical errors, and other areas for improvement. ⚡️ Instant feedback: Graphite Reviewer gives authors immediate, actionable feedback, letting you squash bugs in their PRs before teammates get a chance to review them. Reviewers can then focus on the big picture rather than looking for typos and stylistic nits 📶 More signal, less noise: Other AI bots hallucinate and create noisy comments. Graphite Reviewer is calibrated to catch real bugs and deliver smarter, targeted feedback with fewer false positives. 🤓 Codebase awareness: Graphite Reviewer uses RAG (Retrieval-Augmented Generation) on your team's past pull requests to ensure that every piece of feedback makes sense in the context of your codebase. 🪡 Custom rules: Define & enforce custom patterns specific to your codebase including regex matching to flag things like secrets and API keys, and personalized AI prompts to enforce your team’s code style rules in plain English. ✅ Zero set up: Enable Graphite Reviewer in any repo with the click of a button, and instantly start receiving codebase-specific feedback on new pull requests—no setup required. Graphite Reviewer is free for all teams on GitHub for the month of October. Sign up with your GitHub account to enable Graphite Reviewer across your repos. Want to learn more about Graphite Reviewer? - Check out graphite.dev - Follow withgraphite on 𝕏 for news and releases - Try it yourself 🙂 Our team will be hanging out in the comments to respond to your feedback and questions! 🙌 Big thanks to @benln for hunting us! Ben has helped build and scale amazing products like Notion and we’re excited to follow his newest journey at nextplay.so.

I'll be honest -- I was skeptical that an LLM could come anywhere close to a human's ability to review code accurately. My experience with Graphite Reviewer has been incredible though. Its comments have been useful and actionable nearly every time, and it spots issues that I don't think I would have noticed otherwise. Very cool to see the skeptics (like myself!) be convinced that AI code review is here to stay.

Wow! We spend so much time on reviews, and usually the errors we found are the style one. But static analyzers does no satisfy us in many cases. It looks like a savior!

Hey Merrill, I'm particularly interested in how you've achieved such a low false positive rate. What techniques are you using to filter out hallucinations and noise? How does the codebase-specific RAG work? Does it require any setup from the user? Congrats on the launch!

Graphite reviewer is amazing! We've been using it internally on our team and it's been a huge uplevel.

Love the pricing/plan. Helps a budding developer, upcoming startup ecosystem to work and have flawless code base. In practicality, I guess a developer could provide better insight on having LLM insight. Excited about more innovation in this particular domain and affordability. Good luck to them team and congratulation on the launch!

Nice! I only have on question 😅 Is it better than the PR review feature cursor? 😬

Its ability to provide feedback within seconds means teams spend less time on reviews and more time building. The focus on reducing noisy comments while still catching critical bugs is a feature.

The integration with GitHub is seamless, and the fact that it learns from past pull request to give context_ aware feedback is a huge bonus.

The first time I used this product I was so blown away I shared this South Park clip with all my friends:

Congratulations on Graphite Reviewer! Can’t wait to see it in action!

Congrats! It's awesome

The idea is so cool!

Hi Merrill, Nice product! Seconds to review pull requests? You mean it’s faster than I can say, ‘Who broke the build this time?’ How does it handle large-scale PRs? Does the performance stay lightning fast even when dealing with complex changes across huge codebases?"

seems very promising, good luck with your launch.

Graphite looks super interesting, is there a way to use it on VSC?

What a great addition to the Graphite platform

Congrats to the Graphite Reviewer team on the launch! This AI teammate sounds like a game-changer for speeding up the code review process while ensuring quality and consistency. How customizable is the feedback for different coding standards or team preferences?

I can't decide what I appreciate more: the markdown formatting in the comments, or the sweet sweet jams in the promo video. Congrats on the release, this looks amazingly useful! Particularly on my solo projects where I tend to be far too lenient in my code reviews...

Another banger of a release from the Graphite team! 🔥 Excited to try it