March 15, 2026 — A Graphite.io study released around March 13 announced that AI assistants account for 56% of global search volume, equivalent to 45 billion monthly sessions worldwide, with 34% in the U.S.
The analysis, led by Graphite.io CEO Ethan Smith, highlights AI tools like ChatGPT and Gemini dominating search activity. ChatGPT holds 89% of AI sessions, primarily driven by mobile apps at 83% globally and 75% in the U.S. This update surpasses Q4 2025 data, signaling rapid growth in AI-driven queries.
Key Study Findings
Graphite.io positions AI assistants accounting for 56% of global search volume as a benchmark for the sector’s expansion. The 45 billion monthly sessions underscore a shift from traditional search engines, with longer queries (6-9 words) and zero-click answers becoming prevalent, as noted in Ignite Visibility’s roundup.
AI assistants like ChatGPT and Gemini now handle 56% of global search volume (34% in the U.S.), with 45 billion monthly sessions worldwide and ChatGPT leading at 89%.
This data, amplified by Smith on LinkedIn, emphasizes mobile’s role in AI adoption.
Industry Reactions and Coverage
The revelation that AI assistants account for 56% of global search volume has sparked widespread discussion in SEO and marketing circles. Search Engine Land led coverage around March 9, stressing adaptation needs for SEO professionals amid 45 billion AI sessions. Performance Marketing World described the growth as “far quicker than estimated” on March 10.
Outlets like Innermedia, ALM Corp, BeingGuru, and Lazysoft echoed AI assistants accounting for 56% of global search volume, advocating Answer Engine Optimization (AEO) and strategy pivots. Ignite Visibility’s YouTube video further dissected implications for digital marketing.
Implications for SEO and Marketing
Coverage consistently warns that AI assistants account for 56% of global search volume necessitates rethinking tactics. Experts cite rising AI citations, reduced clicks to sites, and the need for optimized content for AI responses. The trend, covered since early March, underscores a transformative phase for search landscapes.
This AI assistants account for 56% of global search volume milestone, drawn from Graphite.io’s research, continues to influence professional discussions as of March 15.