In a post on X, OpenAI Codex engineering lead Thibault Sottiaux said using the ChatGPT desktop app helped him "grow more in 1 day than last two weeks combined," pairing the claim with a sharply rising chart image. That is the whole public case so far: a first-person productivity claim, an unlabeled chart and an invitation to download the app. The post drew extra attention when Sam Altman quote-posted it on X with a simple "whoa."