Given what happens if you ask Claude to reproduce some well-known game, especially FPS games ... you can be pretty damn sure it's seen the game, maybe they even trained on all the leaked source code they could find. But I find it very hard to believe that style, that code, the best game styles came from open source code.

I mean if it trained on open source, you'd expect it to always come up with Quake essentially. That's not true at all. It's always very close to Call Of Duty in how they play.

Very hard to believe in coincidences.

90% sure Anthropic did just that.