OpenAI says GPT-5.5's improvements are strongest in agentic coding, computer use, and early scientific research, which require reasoning across longer contexts (Madison Mills/Axios)

Madison Mills / Axios : OpenAI says GPT-5.5's improvements are strongest in agentic coding, computer use, and early scientific research, which require reasoning across longer contexts —  OpenAI on Thursday released its most capable model, GPT-5.5, codenamed “Spud,” just one week after competitor Anthropic launched its latest model.

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