Introducing GPT-5.5

OpenAI released GPT-5.5, a more intelligent AI model that can handle complex, multi-step tasks like coding, research, and data analysis with less human guidance than previous versions. The model matches the speed of its predecessor while performing at a higher level and using fewer tokens (individual pieces of text that the AI processes). OpenAI says it tested GPT-5.5 with safety experts and external reviewers before release to reduce misuse risks.