A Cloudflare engineer rebuilt Next.js from scratch in one week using AI, reimplementing 94% of its API and spending $1,100 on Claude tokens

Cloudflare engineer Steve Faulkner has implemented 94% of the Next.js API using Anthropic's AI model, Claude, in an effort to address issues with Next.js deployment on platforms other than Vercel. The project, called Vinext, uses Vite instead of Turbopack and has a build time up to 4.4 times faster than Next.js 16 with Turbopack. However, the code has not been reviewed by a human and is still under heavy development.