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GPT-5.1 is here: a flagship model for developers with more flexible reasoning, more powerful tools, and more reliable code
GPT-5.1 is fully evolved! Faster, smarter reasoning, more powerful tools, adaptive reasoning, 24-hour Prompt caching, apply_patch, and Shell tools help intelligences and developers become more efficient. Want to know what's so great about GPT-5.1? Find out now!
