The Foundation Models Framework stopped working after Xcode failed to download the "Predictive Code Completion Model".
What happened was on macOS Tahoe 26.0:
- Downloaded and installed Xcode 26 Beta (17A5241e)
- Worked with Foundation Models framework. Everything worked fine. ✅
- Opened Xcode 16.4
- This triggers the downloading of Predictive Code Completion Model which then fails.
- Go back into Xcode 26 Beta, Foundation Models framework no longer works. ❌ Error: "Failed to find asset: com.apple.gm.safety_deny.input.code_intelligence.base.generic - no asset"
What I've tried or checked:
- Reinstalling Xcode 26 Beta
- Uninstalling both Xcodes and only installing Xcode 26 Beta
- Checked available space on drive (over 300 GB free)
- Restarted Mac
- Restarted Xcode 26
- Changed wifi networks
- Turned on VPN
- Deleted the Library > Developer > Xcode folder and reinstalled Xcode 26
Feedback Report FB18208139: Can't download Predictive Code Completion Model - Xcode 26
Screenshots