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Two builds, one problem.

A vibe off is two builds, one problem, side by side — with the prompts that made each one. It is where this site gets its name: somebody rebuilt a bank’s app, the bank’s CTO built his own version of a transit app and sent it back.

Vibe off #1

Rebuilt with AI in under two hours
Built back the same evening

DNB’s banking appRebuilt by Ruter’s AI director

The Ruter appRebuilt by DNB’s CTO

DNB vs Ruter: each side rebuilt the other’s app with AI, in an evening.

As covered by Shifter, 28 May 2026.

Listed newest first. In each pair, whoever published first is on the left.

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