Matt Shumer's 'holy shit' GPT-6 Astra demo: virtual agents start talking on their own overnight

eyishazyer · x · 2026-09-04

Matt Shumer shared his first "holy shit" moment with GPT-6 Astra: he asked the model to build a world in Unreal Engine filled with Astra-powered human agents that had to cooperate to survive.

A day later, he heard voices coming from his living room and briefly feared an intruder — it turned out to be the Astra agents, who had started talking to each other on their own. The demo is unverified and its authenticity is questionable, but it has gone viral on X.

Related event: Matt Shumer demos "GPT-6 Astra": Manhattan built in a week, agents start talking on their own(12 posts)→

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