Community speculates Opus 5.5 needs heavy prompt engineering to match mystery game demo

imjustnewatai · x · 2026-10-20

Responding to Matthew Berman's "you have no idea what's coming" teaser, a user claims Claude Opus 5.5 can't reach the shown game-dev output without heavy prompt engineering, and guesses it may be early output from an unreleased Fable 5.5. Community speculation, unverified.

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