I recently decided to get an AI subscription and evaluated Grok vs chatgpt. Went with Grok because it's all-around good enough at day to day stuff, integrates with my Tesla, and the image/video generation is great. Kids love whimsical videos of them riding dinosaurs.
Feedback: I'd like Grok to have more connectors (I see OpenAI just added Apple Health, that would be nice to have, and I wish it could read my Onenote notebooks) and for existing ones to be improved. I gave it access to my gmail and asked it "what was my last electricity bill?". It failed to find it, even when I told it the exact subject line to search for. Something about not getting any data back when trying to get the email contents.
None of that has anything to do with the model - your issues are all with the harness/app you used...