Are they? In my recent experience, ChatGPT seems to have gotten better than Claude again. Plus their free limit is more strict, so this experience is on the free account.

Its just tribalism. People tend to find a team to root for when there is a competition. Which one is better is subjective at this point imo.

Well, I use both of them all of the time, so I'm in a better position to compare them. Sometimes, I tend to prefer one, like ChatGPT after Claude decreased the free quota, but I still choose it sometimes, because I still find value in its answers.