OpenAI’s ChatGPT becomes first AI app to reach 1 billion monthly users in just three years
ChatGPT has achieved a historic milestone, surpassing 1 billion monthly active users in May 2026, making it the fastest app to reach this mark. This rapid adoption highlights AI's mainstream integration, even as competitors like Anthropic's Claude gain traction. The achievement bolsters OpenAI's position ahead of its anticipated IPO.
ChatGPT has achieved a historic milestone, surpassing 1 billion monthly active users in May 2026, making it the fastest app to reach this mark. This rapid adoption highlights AI's mainstream integration, even as competitors like Anthropic's Claude gain traction. The achievement bolsters OpenAI's position ahead of its anticipated IPO.
