> "Ever notice Claude struggling to write Swift code?"

Yes, that is why I quit using Claude and swapped to ChatGPT about a year ago. I've had substantially less issues with GPT.

I remember copilot with GPT helping me export Swift to C for interop. Something I could hardly find good examples and info on in my google searches.

ChatGPT does swift and objc remarkably well including UIKit and core data. Its gotten much better for project files with gpt5-mini