US-China AI hotline, Big Tech antitrust suit & Grok 4.7

Tech & AI Brief · Sep 22, 2026 · 4m

Global powers move to de-escalate algorithmic risks as the US and China establish a direct AI security hotline and the UK summons tech leaders. Meanwhile, major AI developers face a landmark antitrust lawsuit over market coordination as frontier models accelerate. Full edition: https://tech.pibrief.com/editions/2026-09-22