AIJun 7, 2026
ChatGPT crosses 1 billion monthly users — the fastest app ever to get there
ChatGPT’s app passed one billion global monthly active users about three years after launch, reaching the milestone faster than Google Maps, TikTok, Instagram or YouTube, per Sensor Tower estimates. Google’s Gemini trails at roughly 900 million, with Claude and Grok far smaller at about 56 and 50 million.
Why it matters: A billion-user habit cements ChatGPT as the default front door to AI — and a powerful distribution moat for OpenAI.