Meta's Alexandr Wang says Muse Wonder was not trained on 3D demo games

Alexandr Wang, Meta's AI lead, says the company did not explicitly train its Muse Wonder model on 3D demo games, though he says it probably should have.

In an X post on October 12, 2026, he asks users to test Muse Wonder on real coding work.

In a later X post the same day, Wang says Meta built Muse Wonder for real-world tasks for real people, informed by product adoption. He says the team focused on less glamorous work instead of 3D demo games, and that in retrospect it could have done more of that.