OpenAI has reached 400 million weekly active users, up from 300 million in December.
According to CNBC, the company’s user base grew by 33% despite competition from AI models like DeepSeek and recent tensions with Microsoft.
OpenAI COO Brad Lightcap attributed the growth to word-of-mouth adoption, stating that users find the tools valuable and see others using them. This milestone reinforces OpenAI’s strong position in the AI market.
Bijay Pokharel
Bijay Pokharel is the Founder and Editor-in-Chief of Abijita, an independent technology and cybersecurity news publication established in 2017. A specialist in cybersecurity journalism, Bijay covers vulnerability research, malware analysis, enterprise data breaches, digital privacy, and emerging technologies. His work translates complex technical threats into precise, accessible, and actionable intelligence for security professionals and general readers alike. His reporting and investigative coverage are routinely cited and republished across leading technology and security media.



