OpenAI launches GPT-5.5, its first fully retrained base model since GPT-4.5
SMRTR summary
OpenAI has launched GPT-5.5, its first fully retrained model since GPT-4.5, directly targeting Anthropic's growing dominance in the enterprise market. The model excels at completing complex, multi-step tasks independently — handling coding, computer use, and knowledge work — while matching its predecessor's speed and actually reducing costs per task. API access remains delayed pending additional safety reviews.
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