Around the Horn Digest: Everything That Happened in AI Today (Thursday, April 23, 2026)
The Neuron
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Generative AI
OpenAI shipped GPT-5.5 exactly one week after Anthropic's Opus 4.7, Meta cut 8,000 jobs to fund its AI buildout, the White House accused China of "industrial-scale" AI secret theft, Anthropic quietly hit a $1 trillion valuation on secondary markets, and the Pentagon vibe-coded 100,000 AI agents inside Gemini