Just tested Claude Fable 5's coding.
nobody's talking about this part:
i gave it one prompt — "build me a desktop OS in the browser." one shot, zero edits.
windows, 4 working apps, a full game. then it wrote its OWN test suite, ran 46 checks, and passed all of them before telling me it was done!!
we're past vibe coding. This is insane🤯