PSA: If you’re thinking of moving from 1Password to Apple Passwords -- you know, for reasons -- the 1Password iOS app supports the new Credential Exchange standard and can send the data directly to Apple Passwords, including passkeys! But only on iOS.

https://support.1password.com/export/?ios

Unless you're me, and then it doesn't work at all. But I do get the ever-so-helpful message "Export failed!” 🤷