From your experience, allowance for pure chat (no agentic stuff) is more generous in Claude than in The coming ChatGPT merge? Just asking, because I'm undecided as well. I'm on chatgpt plus now and chat is 99% of my usage.

Definitely not. Chat in Claude counts towards your weekly and 5 hour usage. Chat in ChatGPT was truly unique in that it was unlimited, even on the thinking modes.