The following devices are end-of-life, no longer receive firmware or driver security updates, and receive extended support from GrapheneOS via a legacy branch based on Android 14 with only the Android Open Source Project security backports, certain other security patches, and other minimal changes to keep them working:
- Pixel 5a (barbet)
- Pixel 5 (redfin)
- Pixel 4a (5G) (bramble)
The following devices are end-of-life, no longer receive firmware or driver security updates, and receive extended support from GrapheneOS via a legacy branch based on Android 13 with only the Android Open Source Project security backports, certain other security patches, and other minimal changes to keep them working:
- Pixel 4a (sunfish)
- Pixel 4 XL (coral)
- Pixel 4 (flame)
I don't know that anyone has collected any sort of data on reliability. I have a CWWK board that's been working well for about a year now.