According to Similarweb (@Similarweb), the latest 2026 Global AI Tracker reveals significant shifts in generative AI website traffic. ChatGPT's global share has declined from 86.7% a year ago to 64.5% today, highlighting increasing competition. Google's Gemini has surged past the 20% threshold, now holding 21.5% of the worldwide market. Meanwhile, Grok has overtaken 3% and is approaching DeepSeek, while platforms like Perplexity, Claude, and Copilot maintain steady but smaller shares. These numbers indicate ongoing market fragmentation, offering new business opportunities for emerging AI platforms and signaling increased user demand for diverse AI solutions. Enterprises and developers should monitor these trends for partnership and integration opportunities as the generative AI space becomes more competitive (Source: Similarweb, https://x.com/Similarweb/status/2008805674893939041).