OpenAI has released an updated version of its GPT-4 model, designated GPT-4o, on May 12, 2025. The update follows previous iterations such as GPT-4.1, and there is ongoing public interest and inquiry about subsequent versions, including GPT-4.5. The release of GPT-4o represents the latest advancement in OpenAI's generative pre-trained transformer technology as of mid-May 2025.