I paid to upgrade my Anthropic account to pro today, ending a long monogamy with OpenAI, and one thing that struck me was how hard to describe the advantages of one over the other were. I like claude.ai's "style" more, and prefer the "interface" - basically the "way" they talk over the strict correctness of what they said.
Hate on LLM-AIs but if you told me 5 years ago I'd be switching my AI provider because I liked another one's style better, I'd have thought you were bonkers. Shit's come a long way.