It's not confidence-inspiring that their landing page has such atrocious performance. Google Lighthouse gives it[1] a performance score of 25/100 with 12,310ms of TBT and a speed index of 24.7 seconds. It's not even an interactive page either; it's just a video, some images, and some text.

[1] https://pagespeed.web.dev/analysis/https-chatgpt-com-atlas/x...