OpenAI announced that ChatGPT has reached 900 million weekly active users, marking a 350% increase from 18 months ago. Among them, over 5% of weekly active users have become paid subscribers, with the number of paying users surpassing 50 million. Since the beginning of 2026, subscriber growth has accelerated significantly, with January and February expected to be the months with the highest number of new subscribers. Users leverage ChatGPT for activities such as learning and writing, while the product continues to be optimized. In August 2024, ChatGPT's weekly active users exceeded 200 million, reaching 100 million in November of the same year. Additionally, since August 2024, ChatGPT has been integrated with Siri. Furthermore, Apple plans to transform Siri into an AI chatbot in iOS 27 and collaborate with Google, while also opening up Xcode agent coding capabilities using tools from Anthropic and OpenAI.