oh, didn't realize it required login. it's an implementation of the "llm simulates a world as you go" idea. screenshots and twitter for context:

https://sw.vtom.net/tmp/worldsim1.png

https://sw.vtom.net/tmp/worldsim2.png

https://x.com/NousResearch/status/1788283681511035011

https://x.com/karan4d/status/1768836844207378463