#xai
- 7/12/2026 Weekly Briefing AI Weekly #28/2026: xAI Fires Back with Grok 4.5 — Cheaper Than Opus, Faster Than GPT-5.6
xAI launches Grok 4.5 as its first enterprise model after going public, while Beijing weighs export controls on Chinese AI models and the industry faces a $3 trillion revenue gap.