A new member and AI question

hello there,
I'm a new member of this community, a VI developer learning NVGT currently.
I had this question alot in my mind, that which free AI is best?
I'm confused between gemini, chatgpt, deepseek and claude. Claude has limits, so does gemini and chatgpt. Deepseek I have never tried, but I'm looking for a free alternative, or an AI which is at least reliable, and at least doesn't spoils code like chatgpt so badly and leave you in the dark and give broken fixes, as everyone in my place would think too. I'm talking of free ones, not paid.
Thanks, and any help would be appreetiated