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Google and ChatGPT Emerge as Leaders in AI Discovery, According to Previsible's 2026 Report

TECHNOLOGY

7/6/20262 min read

Cover for the 2026 State of AI Discovery Report by Previsible featuring David Bell.

Previsible, the AI Discovery Agency for enterprise GEO visibility, tracked 6.77M LLM sessions across 166 sites over 19 months and shared which AI surfaces marketers should prioritize for brand and product visibility.

Previsible has released its 2026 State of AI Discovery Report, offering one of the most comprehensive looks yet at how consumers find information through AI‑powered systems. According to the Business Wire press release, the third edition of this study analyzed 6.77 million AI‑driven search sessions across 166 websites from November 2024 to May 2026, spanning industries including SaaS, e‑commerce, finance, legal, health, insurance, education, and publishing.

The findings deliver a clear message: Google remains the center of AI discovery, and ChatGPT overwhelmingly leads standalone LLM referral traffic.

Google’s AI Overviews and AI Mode Outperform All LLM Assistants Combined

The report shows that AI discovery happening inside Google, through AI Overviews and AI Mode, drives more AI‑influenced traffic than every standalone LLM assistant combined. For marketers, this means Google continues to be the most important surface to optimize for, even as conversational AI grows.

Previsible emphasizes that brands must treat Google’s AI surfaces as primary discovery channels, ensuring their content is structured, authoritative, and easily extractable by AI systems.

ChatGPT Dominates Standalone LLM Referral Traffic

Among platforms where users query LLMs directly, ChatGPT accounts for 92.4% of trackable standalone referral traffic, far outpacing all competitors.

However, challengers are gaining momentum:

Gemini grew 3.2×, becoming the second most visible model behind ChatGPT.
Claude surged 64×, surpassing Perplexity in March 2026, with strong traction among developers, technical buyers, and professional services.

These shifts highlight emerging opportunities for brands to tailor content toward specific LLM ecosystems depending on audience and industry.

AI Is Reshaping E‑Commerce Discovery

One of the most striking findings: AI referral traffic to e‑commerce content increased 37×, showing that shoppers increasingly arrive on product pages with intent already formed.

This signals a major shift in consumer behavior, AI assistants are becoming the first stop for product research, comparison, and purchase decision‑making.

Five Core Strategies to Win in AI Search

David Bell, Previsible’s Chief Product Officer and author of the report, outlined five essential actions for brands seeking visibility across AI discovery surfaces:

Create citation‑worthy evidence
Build authority across trusted third‑party sources
Make websites accessible for AI extraction
Optimize for answer‑based journeys
Measure business impact, not just visibility

Bell notes that brands must “become a source Google’s AI results want to cite,” and then expand visibility across ChatGPT and other LLMs.

What This Means for Marketers in 2026

The report makes one thing clear: AI discovery is no longer experimental, it’s a core part of search behavior.

Key implications include:

Google’s AI surfaces should remain the top priority for SEO and content teams.
ChatGPT is the dominant standalone LLM, but Gemini and Claude are rising fast.
E‑commerce brands must prepare for AI‑driven, intent‑ready shoppers.
Content must be structured for extraction, citation, and multi‑platform visibility.

As Bell puts it, “The teams that lean in now will be the ones AI chooses to surface.”

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