History of GPT-5 in Timeline

By Popular Timelines Editorial Team · Updated: March 5, 2026

GPT-5 is a multimodal large language model, the fifth in OpenAI's GPT series, launched on August 7, 2025. As a successor to GPT-4, it is accessible via ChatGPT, Microsoft Copilot, and the OpenAI API. It's designed for both direct user interaction and developer integration.

April 14, 2023: OpenAI not training GPT-5

On April 14, 2023, OpenAI CEO Sam Altman announced at an MIT event that the company was prioritizing GPT-4 development and was not actively training GPT-5 at that time, nor would they be for some time.

July 2025: Anticipation for GPT-5 release

In late July 2025, OpenAI was widely expected to release GPT-5 in early August. By July 30, 2025, The Verge reported that Microsoft was preparing for GPT-5 by testing a new mode for its Copilot chatbot.

August 7, 2025: GPT-5 Launch

On August 7, 2025, OpenAI launched GPT-5, the fifth in its series of generative pre-trained transformer foundation models. It became accessible to users through ChatGPT, Microsoft Copilot, and the OpenAI API.

August 13, 2025: Altman addresses GPT-5 personality concerns

On August 13, 2025, Sam Altman acknowledged user feedback on X (formerly Twitter) regarding the personality of GPT-5, stating OpenAI was working to make the model "feel warmer".