Discover how OpenAI pre-trained GPT-4.5, overcoming scaling challenges and advancing AI with data efficiency and innovative system design.

OpenAI is preparing to launch GPT-4.1 along with a full version of its o3 reasoning model soon, according to a report from The Verge on Friday. GPT-4.1 will launch along with smaller GPT-4.1 mini and nano versions.

Building GPT-4 took a lot of people. Now, OpenAI says it could rebuild it with as few as five people, all because of what it learned from its latest model, GPT-4.5. In a company podcast episode published Friday,