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How Cloudflare rebuilt Next.js in a weekend

Yep, you guessed it – with agentic AI.
May 01, 2026

Estimated reading time: 6 minutes

Key takeaways:

  • AI has made “start from scratch” a realistic option. Cloudflare rebuilt Next.js in a matter of days for $1,100, producing something faster and purpose-built for their infrastructure.
  • Agentic coding shifts engineers from writing code to directing it.
  • Not every team should rebuild everything, but every team should be asking the question: the build-versus-buy equation has fundamentally changed.

We’ve come a long way from in-line AI code suggestions. Now, developers are using AI-coding agents to reverse-engineer entire software components and even major frameworks.

The latest case comes from Cloudflare.

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