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AI Summary
- OpenAI released GPT-5.2 on December 11, 2025 as an urgent 'code red' response to Google's Gemini 3 competitive lead, representing acceleration from GPT-5.1 in less than one month
- Unified 'mega-agent' architecture replaces fragile multi-layered system, achieving dramatically lower latency, simplified maintenance, and stronger tool calling for complex workflows
- GDPval benchmark shows GPT-5.2 Thinking beats or ties industry professionals in 70.9% of knowledge work tasks across 44 occupations, positioning it as most capable for enterprise use