I'd argue that Anthropic still has a hard edge on creativity for things like emulating people's comments.

I've fed into several models my past reddit comments (with the comments it's responding to) and asked it to duplicate the style. Claude has always been the only thing that comes even close to original responses that even I think would be exactly my response, wording and all.

GPT or Gemini will just borrow snippets from the example text and just smoosh it together to make semi-coherent points. Scratch that. They're coherent, but they're just unmistakably not from me.