Graphite secures $52M to scale its AI-powered code review platform.
AI coding tools are rapidly transforming the software development landscape. According to GitHub’s latest survey, most developers are already embracing AI-powered assistants in their workflows. Even Y Combinator’s partner, Jared Friedman, revealed that nearly 25% of startups in YC’s W25 batch generate a staggering 95% of their code using AI.
This surge in adoption has sparked massive interest from venture capitalists eager to back startups redefining programming efficiency. One such rising star is Graphite, an AI-driven code review platform that just secured $52 million in a Series B funding round led by Accel. Other backers include Anthropic’s Anthology Fund, Menlo Ventures, Shopify Ventures, Figma Ventures, Andreessen Horowitz, and The General Partnership.
Founded in 2020 by ex-Facebook engineer Tomas Reimers, former Airbnb and Google engineer Greg Foster, and serial entrepreneur Merrill Lutsky, Graphite didn’t start out focused on code reviews. Initially, the team set out to build mobile development tools. However, the trio quickly pivoted after realizing how tedious and time-consuming code reviews had become.
“We created Graphite as an internal solution to ease our own pain around code review,” Lutsky shared. “When we showed it to a few ex-Meta engineers, word spread fast, and the demand became impossible to ignore.”
Today, Graphite uses advanced AI models—leveraging Anthropic’s Claude and OpenAI’s GPT technology—to deliver detailed code feedback. It automatically identifies bugs, flags errors, and highlights potential oversights that might otherwise slip through manual reviews.
Graphite’s platform does more than catch coding mistakes. It also interprets developer comments, recommends code changes, summarizes complex codebases, and even generates possible fixes when failures are detected.
Now, Graphite is pushing the envelope further with “Diamond”, a new AI-powered tool designed to catch coding bugs and logic errors automatically. The company plans to spin Diamond off as a standalone product in the near future.
The AI coding space is heating up with competitors like GitHub Copilot, Cursor’s Anysphere, Poolside, Augment, Magic, and Codeium making waves. Additionally, startups like CodeRabbit and DeepCode are focused exclusively on AI-assisted code reviews. Even OpenAI recently upgraded its macOS ChatGPT app to allow direct code edits inside development tools.
Still, Graphite is carving out its niche by focusing on reliability and security—two major concerns in AI-assisted coding. The platform lets engineering teams define custom review patterns tailored to their codebases. More importantly, it allows filters to flag sensitive data, helping safeguard projects from potential security breaches.
Graphite’s approach is paying off. In 2024, the company reported an impressive 20x revenue growth. Today, it serves over 500 companies and tens of thousands of engineers, with high-profile customers like Shopify, Snowflake, Figma, and Perplexity AI.
“This new funding, combined with our strong revenue growth, gives us years of runway and a clear path to profitability,” Lutsky added. “We’re well-positioned to double down on product development and grow our NYC-based team aggressively.”
In a bid to drive even broader adoption, Graphite recently made its core code review tool free for teams of all sizes. Previously, free access was limited to smaller teams of 10 or fewer.
With this latest round, Graphite has now raised a total of $81 million in venture funding. The fresh capital will fuel ongoing product innovation and expansion, as the company sets its sights on becoming the go-to platform for AI-powered code reviews.
