What this tells me is that xAI / X / Grok have together become a much bigger threat to OpenAI than they anticipated. And I believe it's true -- Grok's progress has been much faster than ChatGPT's over the past year, even if we can nitpick evals over which is technically "better" at any moment. The fact that it's hard to tell is itself a huge statement considering the massive advantage OpenAI and ChatGPT had not too long ago. I mean, Grok was basically a joke when it first launched!