Model Detail
OpenAI: GPT-5
—OpenAI releases GPT-5.5, bringing company one step closer to an AI ‘super app’
OpenAI says its latest model offers increased capabilities across a broad variety of categories.

OpenAI says its new GPT-5.5 model is more efficient and better at coding
OpenAI just announced its new GPT-5.5 model, which the company calls its "smartest and most intuitive to use model yet, and the next step toward a new way of getting work done on a computer." OpenAI just released GPT-5.4 last month, but says that the new GPT-5.5 "excels" at tasks like writing and de
Introducing GPT-5.5
Introducing GPT-5.5, our smartest model yet—faster, more capable, and built for complex tasks like coding, research, and data analysis across tools.
GPT-5.5 System Card
GPT-5.5 Bio Bug Bounty
Explore the GPT-5.5 Bio Bug Bounty: a red-teaming challenge to find universal jailbreaks for bio safety risks, with rewards up to $25,000.
From GPT-3 to GPT-5: Mapping their capabilities, scope, limitations, and consequences
arXiv:2604.10332v1 Announce Type: new Abstract: We present the progress of the GPT family from GPT-3 through GPT-3.5, GPT-4, GPT-4 Turbo, GPT-4o, GPT-4.1, and the GPT-5 family. Our work is comparative rather than merely historical. We investigates how the family evolved in technical framing, user in