I use Copilot with IntelliJ (for golang) - which works fantastic, maybe because the language is simple and well-documented. I also use Copilot for Xcode (you can find this plugin on GitHub) with Swift/SwiftUI - it is so-so, Swift and SwiftUI evolve so much, so I don't see a lot of benefits from using Copilot with Swift. And yes, I use a lot of ChatGPT (with typing mind wrapper). I mostly used GPT-4 model but switched to GPT-3.5 as they both can hallucinate, but GPT-3.5 can give me an answer quicker. Yes, they both can provide inaccurate answers, but I don't ask them to write code that I am ready to put in my app, but primarily examples.

phind.com

Is it entirely free? Could not find an answer on their website.