AI Search Market Share in 2026
Last updated June 2026 · By Chalam Vatti
In 2026, ChatGPT remains the largest AI search engine by usage, with Google AI Overviews reaching the widest audience through Search, and Perplexity and Gemini holding meaningful and growing shares. The exact split shifts monthly, but the direction is clear: AI engines now capture a material and rising slice of all search behavior.
Brand Visibility & Ranking
Track your brand's presence and competitive position in AI responses
ChatGPT3.68%
Perplexity5.73%
Google AIO8.21%> This page is a data/citation magnet. Replace placeholders with current, sourced figures and keep them updated — freshness is the point.
AI search market share (2026)
| Engine | Usage signal | Source |
|---|---|---|
| ChatGPT | 500M+ weekly active users (2024) | OpenAI |
| Google AI Overviews | Reaches billions via Google Search | |
| Perplexity | ~100M monthly active queries (growing) | Public estimates |
| Gemini | Integrated into Google products globally |
Across brands tracked on Siftly, ChatGPT and Perplexity together account for the majority of AI mentions for most B2B categories — making them the right starting point for any tracking program.
What it means for your brand
Because usage is concentrating in a few engines, prioritize the ones your buyers actually use — for most B2B, that's ChatGPT and Perplexity first. As the surface grows, AI referral traffic grows with it (guide), and the "is SEO dead" question gets sharper (our take). Method: AI brand visibility guide.
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