The macOS Sonoma update that is in testing allows Mac owners who opt to use Google Chrome, Microsoft Edge, or another browser to use Apple’s Password Manager for filling passwords.
Developers and public beta testers running macOS Sonoma can use their iCloud Keychain passwords with non-Safari browsers at this time, autofilling passwords and one-time codes. Third-party browsers can also save new passwords.
Read more at MacRumors.com