Just wanted to say that if you want to learn any hard topic, Gemini > ChatGPT. I pay for both. Don't yet know about Claude.

In which topics Gemini is better? Is it ChatGPT can't handle them or doesn't provide clear explanation?

ChatGPT knows topics, but is awful at explaining them. That said, the v6 release of ChatGPT seems to have improved at this.

> In which topics

Graduate-level mathematics.