AI Daily — Monday, September 14, 2026

SOXL crashes 15.83% as AI-safety warnings from frontier lab CEOs trigger a massive semiconductor selloff, dragging VGT, QQQ, and VUG lower with it. • Anthropic's Dario Amodei, Sam Altman, Elon Musk, and Demis Hassabis back an AI development slowdown — Trump and House Speaker Mike Johnson push back hard, setting up a major U.S. policy clash. • Broadcom posts $16.7B in AI semiconductor revenue, up 221% year-over-year, with custom XPU chips now 73% of that total — a serious structural challenge to Nvidia's AI infrastructure dominance. • Frontier model Fable 5.1 cracks a 370-year-old unsolved cipher, the Cyphral Distich, adding concrete evidence that large language models are crossing into genuinely novel problem-solving territory. • Abacus.AI's open-weight Smaug models cut agentic AI loop costs by 15–20%, and Microsoft publishes a 37-page Humanist AI Code of Conduct, signaling the safety and efficiency debates are now shaping the entire industry.