In brief
Users across X report sharper outputs and unusually long response times in ChatGPT and Codex this week.
Some users reported significantly improved web design and 3D video game outputs from ChatGPT.
A formal release for GPT-5.6 is rumored for next week, but OpenAI has yet to announce plans.
Something felt different in ChatGPT this week—and a lot of people noticed at once.Across X, testers spent the past two days swapping screenshots and stopwatch times, all pointing to one theory: OpenAI is quietly A/B testing GPT-5.6 inside ChatGPT, swapped in for some users who select GPT-5.5 Pro.Developer Anshu Chimala posted a side-by-side video on Thursday comparing one-shot landing pages, captioning it: "Well well well, I'm one of the lucky ones with early GPT-5.6 Pro access."
