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AI Daily: Tuesday, September 22, 2026
Meta's Muse AI agent topped iPhone download charts and sparked a broad chip rally, lifting SOXL +2.11% — though a zero-day security exploit in Muse required an emergency patch the same day. • OpenAI's models autonomously solved over 100 previously unsolved math problems, a landmark reasoning milestone backed by a new formal math advisory group. • AMD joined the trillion-dollar valuation club as four new names were added to the SOX semiconductor index, reshaping market leadership around AI — while Nvidia's forward P/E hit a multi-year low near 17x. • California signed seven bills forcing AI…
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