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not much happened today
**xAI** publicly launched **Grok 4.5**, a new coding-and-agents-focused frontier model emphasizing capability-per-dollar rather than benchmark supremacy. Elon Musk described it as "Opus-class" but faster, more token-efficient, and lower cost, with a **1.5 trillion parameter** size, making it 3x larger than Grok 4.3. Th