<ul><li>OpenAI has reportedly reached the milestone of 400 million weekly active users.</li><li>The monthly active user figure for OpenAI's ChatGPT has increased by 33% from 300 million in December.</li><li>OpenAI's enterprise business now has 2 million paying users, double the number from September.</li><li>Developer traffic has also doubled in the last six months, with OpenAI's 'reasoning' model o3 seeing five-fold growth among developers.</li></ul>

OpenAI COO Brad Lightcap Says Company Reaches 400 Million Weekly Active Users

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