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At the end of 2022, OpenAI launched ChatGPT and opened up an easy-to-access interface to large language models (LLMs) for the first time. The uptake was stratospheric.
Since the explosive launch, ChatGPT hasn’t shown signs of slowing down in developing new features or maintaining worldwide user interest. As of September 2025, ChatGPT now has a reported 700 million weekly active users and hundreds of plugins.
The following is a timeline of all key events since the launch up to October 2025.
History Of ChatGPT: A Timeline Of Developments
June 16,…
