ChatGPT is now the fifth most popular website worldwide in terms of raw visitor numbers behind Google, YouTube, Facebook, and Instagram as of September 2025, Similarweb finds.
Chatbots now top some of the internet’s most popular destinations in terms of visitors, overtaking Amazon, X, Reddit, WhatsApp, and Wikipedia since mid-2024.
According to web analytics platform Similarweb, ChatGPT is now the fifth most popular website worldwide in terms of raw visitor numbers, coming just behind Google, YouTube, Facebook, and Instagram as of September 2025.
Though OpenAI’s tool was the only chatbot to overtake the biggest household names, web visits to all leading AI chatbots rose 76% year-on-year, while mobile app sessions grew seven-fold, according to Similarweb.
