Have you tried a few? If so, which do you prefer? If not, which do you use? I'm a little late to the party, and the current amount of choices is quite intimidating.
I imagine you're asking about coding help. For that, I think you should qualify any answer you get with the user's most commonly used language (and framework, if applicable).
In my experience, Claude Sonnet 3.5 (3.6?) has been unbeatable. I use it for Rust. Making sense of compiler errors, rubberducking, finding more efficient ways to write some function and, truth be told, some times just plain old debugging. More than once, I've been able to dump a massive module onto the chat context and say "look, I'm experiencing this weird behavior but it's really hard to pin down what's causing it in this code" and it pointed to the exact issue in a second. That alone is worth the price of admission.
Way better than ChatGPT 4o and o-1, in my experience, despite me saying the exact opposite a few months ago.
