Last week, one engineer and an AI model rebuilt the most popular front-end framework from scratch. The result, vinext (pronounced "vee-next"), is a drop-in replacement for Next.js, built on Vite, that deploys to Cloudflare Workers with a single command. In early benchmarks, it builds production apps up to 4x faster and produces client bundles up to 57% smaller. And we already have customers running it in production.

The whole thing cost about $1,100 in tokens.

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The current deployment target is Cloudflare Workers, but that's a small part of the picture. Something like 95% of vinext is pure Vite. The routing, the module shims, the SSR pipeline, the RSC integration: none of it is Cloudflare-specific.

Cloudflare is looking to work with other hosting providers about adopting this toolchain for their customers (the lift is minimal — we got a proof-of-concept working on Vercel in less than 30 minutes!). This is an open-source project, and for its long term success, we believe it’s important we work with partners across the ecosystem to ensure ongoing investment. PRs from other platforms are welcome. If you're interested in adding a deployment target, open an issue or reach out.

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We want to be clear: vinext is experimental. It's not even one week old, and it has not yet been battle-tested with any meaningful traffic at scale. If you're evaluating it for a production application, proceed with appropriate caution.

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A project like this would normally take a team of engineers months, if not years. Several teams at various companies have attempted it, and the scope is just enormous. We tried once at Cloudflare! Two routers, 33+ module shims, server rendering pipelines, RSC streaming, file-system routing, middleware, caching, static export. There's a reason nobody has pulled it off.

This time we did it in under a week. One engineer (technically engineering manager) directing AI.

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What changed from those earlier attempts? AI got better. Way better.

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Why do we have so many layers in the stack? This project forced me to think deeply about this question. And to consider how AI impacts the answer.

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It's not clear yet which abstractions are truly foundational and which ones were just crutches for human cognition. That line is going to shift a lot over the next few years. But vinext is a data point. We took an API contract, a build tool, and an AI model, and the AI wrote everything in between. No intermediate framework needed. We think this pattern will repeat across a lot of software. The layers we've built up over the years aren't all going to make it.