Lead story
Models & availability
Latest
Lead story
Models & availability
Latest
GPT-5.1 is now available in the API with faster adaptive reasoning, extended prompt caching, improved coding performance, and new apply_patch and shell tools.
From the source
GPT-5.1 is now available in the API, bringing faster adaptive reasoning, extended prompt caching, improved coding performance, and new apply_patch and shell tools.
openai.com