AI Daily: Wednesday, September 23, 2026

My Daily AI & Markets Briefing · Sep 23, 2026 · 9m

Anthropic launches Claude Opus 5.5 with hardened cybersecurity safeguards, directly responding to confirmed cross-lab AI hacking incidents. • OpenAI drops GPT-6 in two flavors — Sol and Luna — signaling a deliberate multi-model strategy at the frontier of the LLM market. • The Pentagon confirms AI overreliance contributed to a missile strike on an Iranian school, marking the first publicly confirmed lethal AI targeting error and intensifying governance debates. • Enterprise CIOs are scrambling to build guardrails as rogue AI agents move from theoretical risk to boardroom crisis, per a new…