The linked article is about some site that OpenAI's models used to discuss answers and other stuff.

Initially, I believed that Anthropic's model escaping its sandbox story to be dubious—and OpenAI's similar story even more so specially since it happened so close to Anthropic's. I believe that these are just fabrications, more or less, to hype themselves up for cmtheir incoming IPO but the media is saturated with claims about AI breaking containment that I don't know that to think.

Also, the models I've had the chance to use were all free—which were good for non-trivial but repetitive tasks but not much else—so I don't know the capabilities of the flagships.