My daughter and her friends have their own paid chatgpt. She said she uses it to help with math homework and described to me exactly why I bought a $200 TI-92 in the 90s with a CAS.
I’ve been trying out locally run models on my phone. The iPhone 17 is able to run some pretty nice models, but they lack access to up to date information from the web like ChatGPT has. Wonder if some company like Kagi would offer some api to let your local model plug in and run searches.
In the last few months, every single non-programmer friend I've met has ChatGPT installed on their phone (N>10).
Out of all the people that I know enough to ask if they have ChatGPT installed, there is only one who doesn't have it (my dad).
I don't know how many of them are paying customers though. IIRC one of them was using ChatGPT to translate academic writing so I assume he has pro.