ChatGPT nears 1 billion weekly active users, report says

OpenAI's ChatGPT is approaching 1 billion weekly active users, according to a report by The Information citing internal company figures disclosed to employees. The milestone, which has not been publicly announced, arrives roughly seven months after the company had originally targeted it for the end of 2025.theinformation+1

Rapid Growth Trajectory

The figure represents a continuation of ChatGPT's accelerating adoption curve. In February 2026, OpenAI publicly reported more than 900 million weekly active users and over 50 million consumer subscribers. By May 2026, ChatGPT's mobile app crossed 1 billion monthly active users, becoming the fastest app ever to reach that threshold, according to Sensor Tower data reported by Reuters.reuters+1

Enterprise customers now account for 40% of OpenAI's revenue and are expected to reach 50% by year-end. The company has more than 9 million paying business users in addition to its consumer subscriber base.gurufocus+1

Competitive Landscape

ChatGPT maintains a dominant position in the AI chatbot and AI search markets, though competition is intensifying. StatCounter data from June 2026 shows ChatGPT holding roughly 77% of the global AI chatbot market, while research from Wix's AI Search Lab pegged its share of the AI search market at 61% as of Q1 2026, down from nearly 87% a year earlier as Google's Alphabet Inc. ↘ 3.58% Gemini closed the gap.wix+1

IPO Timeline in Flux

The milestone comes as OpenAI navigates its path toward a public listing. Reuters reported in October 2025 that the company was considering filing with securities regulators as soon as the second half of 2026, but The New York Times reported in June 2026 that OpenAI was leaning toward postponing its IPO until 2027. In March 2026, OpenAI closed a $122 billion funding round at a post-money valuation of $852 billion, giving it financial runway as it weighs the timing of going public.reuters+2