At the annual developer conference DevDay held in San Francisco, OpenAI CEO Sam Altman announced that ChatGPT’s weekly active users (WAU) have officially surpassed 800 million — setting a new global record for generative AI adoption.
In his keynote address, Altman reflected on ChatGPT’s remarkable growth, noting that in 2023, OpenAI had around two million developers and roughly 100 million weekly active users. Today, those numbers have soared to four million developers and 800 million users. Meanwhile, the OpenAI API now processes over six billion tokens per minute, underscoring how generative AI has become a foundational element of both daily life and industry innovation.
Beyond the impressive usage metrics, Altman also unveiled several new developer tools, including the “Apps SDK” and “AgentKit” — two platforms designed to make it easier for developers to build applications and intelligent agents atop ChatGPT and OpenAI’s models.
The Apps SDK enables developers to integrate custom application services directly into the ChatGPT interface, while AgentKit provides a framework for developing autonomous agents capable of independent decision-making and task execution.
Industry analysts believe that the announcements at DevDay mark OpenAI’s strategic transition toward platformizing ChatGPT — evolving it from a single conversational product into an open ecosystem for AI development. With a user base now exceeding 800 million, this move not only cements OpenAI’s market dominance but also heightens competitive pressure on rivals such as Google, Anthropic, and Meta.
In closing, Altman emphasized that OpenAI’s mission is not to replace developers but to empower them: “We want everyone to be able to use AI to create their own tools.” He also hinted that additional enterprise-focused product updates will be unveiled in the coming weeks.
This milestone once again affirms ChatGPT’s status as the world’s most popular AI platform and signals the dawn of a new era of generative AI — one defined by tool creation, scalability, and human collaboration.