Preview video from Open AI: https://www.youtube.com/watch?v=hhdpnbfH6NU&t=878s
As I think about what "AI-native" or just the future of building software loos like, its interesting to me that - right now - developers are still just reading code and tests rather than looking at simulations.
While a new(ish) concept for software development, simulations could provide a wider range of outcomes and, especially for the front end, are far easier to evaluate than just code/tests alone. I'm biased because this is something I've been exploring but it really hit me over the head looking at the Codex launch materials.