ChatGPT has surpassed an estimated 800 million weekly active users, marking one of the fastest adoption surges in the history of consumer technology. The milestone, reached around September-October 2025, highlights OpenAI's widening dominance in the generative AI market and positions the platform to potentially reach one billion users by the end of the year.
This explosive growth represents a doubling of the user base in less than a year - a pace that outstrips the early expansion of social media and messaging platforms. The rapid uptake reflects how artificial intelligence has become deeply embedded in both personal and professional workflows, transforming communication, creativity, and productivity across industries.
The expansion of ChatGPT has been matched by a sharp increase in OpenAI's revenue. The company generated roughly 3.7 billion in 2024 from ChatGPT alone and achieved a 10 billion annual revenue run rate by mid-2025. Its paid subscription tier, ChatGPT Plus, now counts over 10 million subscribers, while enterprise usage has reached near ubiquity, with 92 of Fortune 100 companies incorporating the platform into their operations.
