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Important Note: Analytics platforms (Google Analytics, Adobe) often adjust their reporting to reflect changes in AI referrals. In July 2026, we updated historical data to take these changes into account. OpenAI/ChatGPT data, which accounts for the majority of AI referrals, was impacted, which in turn impacted historical market share data.
Total Search Dominance Index
Google remains the clear leader at 86.9% of all search referrals, while AI search grew from 1.5% to 1.9% of total search referrals, highlighting the emerging role of generative platforms in discovery.
AI-Specific Search Index
ChatGPT dominates AI search referrals with a 95% share, while Gemini, Perplexity and Claude collectively account for just 5%, reinforcing ChatGPT’s leading position in AI-driven discovery.
Monthly Market Trends By AI Engine
ChatGPT has maintained a dominant position throughout the period, reaching ~95% in August, while Gemini, Perplexity, and Claude have collectively declined to ~5%. The sustained gap suggests that AI referral activity is increasingly concentrated around ChatGPT rather than distributed evenly across competing LLMs.
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