OpenAI — Weekly Active Users: 900 million

NoteThe source directly confirms the exact claim. The claim states 'OpenAI's Weekly Active Users = 900M (exact stored value: 900,000,000 (i.e. ~900 million)) (as of 2026-02)' with additional context 'ChatGPT reached 900M weekly active users announced February 27, 2026'. The source text explicitly states: 'On February 27, 2026, OpenAI announced that ChatGPT had surpassed 900 million weekly active users' and lists '900 million+ weekly active users as of February 27, 2026' in its data summary. The date (February 27, 2026 = 2026-02), the exact figure (900 million = 900,000,000), and the entity (OpenAI/ChatGPT) all match precisely. The '+' symbol in the source ('900 million+') indicates at least 900 million, which is consistent with the claim's exact value of 900 million.