415.tech
AI & tech, from the frontlines of Silicon Valley·● Issue 2026-06-08
Most recent edition · Monday · June 8, 2026
Apple rebuilds Siri on a 1.2-trillion-parameter Gemini model and opens iOS 27 to third-party AI defaults

Apple rebuilds Siri on a 1.2-trillion-parameter Gemini model and opens iOS 27 to third-party AI defaults

Apple has rebuilt Siri from scratch on a custom Google Gemini model — 1.2 trillion parameters, ~$1B/year — routing the heaviest queries to Google Cloud on Nvidia Blackwell B200s while simpler requests stay on-device via Private Cloud Compute, delivering the AI overhaul it promised two years ago. iOS 27 also lets users designate Claude, ChatGPT, or Grok as the default AI for Siri and Writing Tools, opening Apple's billion-device installed base to third-party providers for the first time. Tim Cook steps down as CEO on September 1, handing the role to hardware chief John Ternus.

techtimes.com →