Coinbase says AI now writes 95% to 100% of its code

Coinbase said large language models, or LLMs, now write or assist with writing between 95% and 100% of the company’s code, up from about 40% disclosed in February. Rob Witoff said effectively all employees use AI daily, and most engineers now run five to 10 AI agents at once to write, test and review software. The company described a tiered approach to autonomy. Prototyping has been fully automated, while core cryptography that protects customer funds still relies mainly on human input and core system management sits between those extremes. That distinction is significant for an exchange holding billions of dollars in customer assets, where a single flawed line of code can become a security risk. Witoff also projected that by 2030, Coinbase could have AI agents doing the equivalent work of 100,000 employees, roughly 25 times the company’s headcount. The disclosure comes as Coinbase expands its involvement in AI-related infrastructure through the x402 Foundation, a Linux Foundation initiative focused on standardizing payments for AI agents alongside members including Ripple, Visa and Mastercard. Critics say AI-coding statistics can be hard to compare across companies because they can range from autocomplete assistance to largely autonomous code generation.