OpenAI Releases GPT-5.5, a Fully Retrained Agentic Model That Scores 82.7% on Terminal-Bench 2.0 and 84.9% on GDPval

OpenAI has released GPT-5.5, a fully retrained model designed for autonomous multi-step tasks with minimal human intervention, scoring 82.7% on Terminal-Bench 2.0 and 84.9% on GDPval, outperforming competitors in agentic coding and knowledge work. This advancement is crucial for developers as it promises more efficient and cost-effective automated workflows despite increased API pricing.

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