I have not been able to find an easy way to use Claude. While ChatGPT lets me use without even logging in (for free), the only way I could find for Claude was to add an email - approve it by clicking a link on it - and be presented with a mobile number verification.
But ChatGPT - hallucinates and flounders so much about almost anything worthwhile I ask that it is simply of no worth to me as far as trustworthiness is concerned. It tries to be flowery to give an impression of being "good". It is not. Is it decent fort writing quick office replies which you could quick-edit and sent. I would think so. Anything more "serious"? Nope!
Gemini (could use it via a non-Gmail throwaway email Google a/c) wasn't that verbose or going all over. It was more restrained and didn't try too hard about things it didn't know or couldn't do anything about.
I think a lot of the reason ChatGPT seems "better" is because it is easily accessible and the company/founder actually achieved the intended "viral marketing" it could including by that firing and re-hiring saga, ScaJo episode et al.