Every iPhone, iPad, and Mac that either ships with or is upgraded to iOS 26, iPadOS 26 and macOS 26 has a 3-billion parameter LLM that’s available to developers and operates on-device. Mail, Notes, Reminders are already integrated.[1]
I might be out of the loop, but if anyone else is confused about the version number:
> If you were expecting iOS 19 after iOS 18, you might be a little surprised to see Apple jump to iOS 26, but the new number reflects the 2025-2026 release season for the software update.
[1]: https://developer.apple.com/videos/play/wwdc2025/286