OpenAI launches GPT-5.5, its first fully retrained base model since GPT-4.5

The model, codenamed “Spud,” is designed to complete complex multi-step tasks with minimal human direction. It sets new benchmarks in agentic coding, computer use, and knowledge work, while matching GPT-5.4’s per-token latency. API access is delayed pending additional safety work. For months, the AI industry’s open secret has been that Anthropic’s Claude is winning the […]

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