A year ago, AI search was basically one product with one name: ChatGPT. A new report says that era is already over.
Similarweb’s 2026 Generative AI Landscape report tracks a market that is booming and splintering at once. Generative AI websites drew 9.5 billion visits a month worldwide between June 2025 and May 2026, up 70% on the year. App downloads reached 4.4 billion, up 58%.
The growth is not the surprise. The fragmentation is.
ChatGPT is still the biggest. Its lead is shrinking.
ChatGPT is still the largest standalone AI website, and it remains enormous. But Similarweb says its share of web visits has fallen steadily as Gemini, Claude, Perplexity and DeepSeek pull in audiences of their own.
