DevDay 2025: OpenAI launches apps inside ChatGPT

OpenAI announced a major update to ChatGPT, introducing apps that can run directly inside the chatbot. The development comes as ChatGPT’s user base has grown to over 800 million weekly users, up from 100 million in 2023.

The number of developers using OpenAI’s tools has also doubled to 4 million, and API usage has increased from 300 million tokens per minute to 6 billion, CEO Sam Altman revealed at the OpenAI DevDay address in San Francisco.

The new ChatGPT Apps SDK, now in preview for developers, lets them build apps that connect to data,…