One of the most common questions we get from new clients is some version of this: "Which AI platforms should I actually care about?"
It is a fair question. The AI search landscape in 2026 moves faster than most marketing teams can track. New models launch, old ones rebrand, and market share numbers shift month to month.
That is exactly why we made a deliberate choice when building the core plans for our prompt tracking tool. Rather than trying to monitor everything, we identified the three platforms that represent the overwhelming majority of where your customers are actually asking questions right now: ChatGPT, Google AI Overview, and Perplexity.
Here is the reasoning behind that decision.
ChatGPT: The Platform That Defined the Category
Why ChatGPT Is the Baseline for AI Visibility
ChatGPT built the AI search category, and it still owns the largest share of it. The platform now has 900 million weekly active users and processes over 2.5 billion prompts per day. For most marketing leaders, ChatGPT is the platform their customers think of first when they think of AI.
That scale means what ChatGPT says about your brand matters enormously. A brand that gets cited consistently in ChatGPT responses builds a compounding visibility advantage. A brand that does not show up, or shows up with inaccurate information, is losing consideration before a single website visit has happened.
Tracking ChatGPT is not optional for any serious AI visibility strategy. It is the baseline.
ChatGPT's Market Position in 2026
The platform commands between 60 and 77 percent of the AI chatbot market depending on the measurement methodology, and it continues to grow in absolute user terms even as its percentage share declines. Over 2 billion daily queries are processed on the platform.
For any brand where customers research before they buy, ChatGPT is where that research is happening at scale.
How ChatGPT Shapes the Consideration Funnel
ChatGPT is increasingly used at the top of the consideration funnel, for category-level questions and brand comparisons rather than tactical searches. Typical responses name a small set of brands per answer, which means the stakes for appearing or not appearing are high.
If ChatGPT is summarizing your category for a potential buyer and your competitors are in that summary but you are not, you have lost a touchpoint before the customer ever found your website.
Google AI Overview: Reach That No Other Platform Can Match
What Google AI Overview Is and Why It Matters
Google AI Overviews are the AI-generated summaries that appear at the top of Google search results. They now trigger on approximately 48 percent of all Google search queries in commercial verticals, up from around 32 percent a year ago.
When you factor in Google's continued dominance of traditional search, AI Overviews represent the single largest AI-mediated touchpoint in existence, estimated to reach 1.7 billion monthly users.
The Citation Advantage Is Real
Most brands have the least visibility into this platform, yet it is reshaping the economics of organic search most aggressively.
The key finding: brands that are cited within AI Overviews see approximately 120 percent more organic clicks per impression than uncited brands on the same queries. Getting cited is the new ranking.
For brands that are not cited, organic click-through rates on AI Overview queries drop significantly. The visibility gap between cited and uncited brands is widening with every percentage point of coverage growth.
AI Overview Exposure by Industry
For industries with high informational query volume, the exposure rate is even higher:
- Healthcare: AI Overviews appear on 88 percent of queries
- Education: 83 percent of queries
- B2B Technology: over 80 percent of queries
For most of our clients, the majority of searches relevant to their category are now generating an AI-mediated answer before a human result appears. Whether your brand is in that answer is not a secondary concern. It is the primary one.
How Google AI Overview Decides What to Cite
Unlike ChatGPT, which synthesizes from training data and web search, AI Overviews pull heavily from indexed web content. The current citation breakdown:
- Brand-owned domains: 31 percent of citations
- Review and comparison platforms: 24 percent of citations
- News and editorial publications: 17 percent of citations
The content your brand publishes, the reviews you earn, and the third-party coverage you attract are all directly shaping what AI Overviews say about you. Tracking your presence in this environment is about understanding where the system is drawing from and where the gaps are.
Perplexity: Where High-Intent Research Happens
What Makes Perplexity Different
Perplexity has a smaller absolute user base than the other two platforms, but a user behavior profile that makes it disproportionately valuable to track. The platform processes approximately 780 million search queries per month and has grown to between 34 and 100 million monthly active users.
Those numbers are meaningful on their own. But what sets Perplexity apart is not the size of its audience. It is the quality of the intent behind those queries.
The Perplexity User Profile
Perplexity users do not behave like general search users. The platform attracts professionals, researchers, and high-consideration buyers using it for deep, multi-step research tasks. The data tells a clear story:
- Average query length: 9.4 words on Perplexity versus 3.2 words on Google
- Follow-up questions per session: 5.1 on average
- Average session length: 11 minutes, more than double a typical search visit
- Professional use: 64 percent of Perplexity users are using the platform for work-related research
These are not casual browsers. They are actively building consideration sets.
Why Perplexity Matters for B2B Brands Specifically
For B2B brands, Perplexity is where high-value research happens. The person using Perplexity to evaluate software vendors, consulting partners, or professional services providers is not casually browsing. They are in late-stage research mode.
Perplexity-referred traffic converts at a significantly higher rate than standard organic traffic, which tracks with the intent profile of its user base.
Perplexity's Citation Behavior Creates Trackable Signal
Perplexity cites sources more explicitly and with higher density than any other mainstream AI platform, averaging 8.2 cited sources per answer. That citation behavior creates a measurable, trackable trail of where the platform is sourcing information about your brand, and where it is not.
That is precisely what makes it valuable for prompt tracking. Every Perplexity response is an auditable signal.
Why These Three, and Not Others
Other Platforms Matter, But Core Plans Need Focus
We want to be direct about what we are not saying here. Claude, Grok, Microsoft Copilot, and others each serve meaningful audiences, and the market will continue to fragment. Our higher-tier plans include expanded coverage precisely because a complete AEO picture requires tracking across a broader set of surfaces.
But core plans exist to give clients a focused, actionable starting point.
What Makes ChatGPT, Google AI Overview, and Perplexity the Right Starting Point
When you ask "where are your customers asking questions right now, at scale, with buying intent," the answer in 2026 is these three platforms. Together they represent:
- The dominant share of AI-mediated discovery across consumer and professional audiences
- Meaningfully different user behaviors and citation patterns, which means tracking all three produces a multi-dimensional view rather than redundant data
- Mature research and measurement infrastructure, which makes the signal reliable and actionable
What Prompt Tracking Is Actually For
The goal of prompt tracking is not to monitor everything. It is to understand where your brand stands in the conversations that actually influence buying decisions, and to build a baseline for improving that standing over time.
ChatGPT, Google AI Overview, and Perplexity are where those conversations are happening. That is why they are where we start.
Sentient AEO helps brands build and measure AI search visibility across ChatGPT, Google AI Overview, Perplexity, and other platforms. To understand where your brand currently stands in AI-generated responses, start with an AEO Visibility Audit at sentientaeo.com.
Citations
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ChatGPT has 900 million weekly active users and processes over 2.5 billion prompts per day -- OpenAI, February 2026 disclosures, via DemandSage: https://www.demandsage.com/chatgpt-statistics/
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ChatGPT commands between 60 and 77 percent of the AI chatbot market -- Similarweb and DemandSage, April 2026: https://www.demandsage.com/chatgpt-statistics/
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Over 2 billion daily queries are processed on ChatGPT -- DemandSage ChatGPT Statistics, June 2026: https://www.demandsage.com/chatgpt-statistics/
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AI Overviews trigger on approximately 48 percent of all Google search queries in commercial verticals -- BrightEdge, March 2026, via SQ Magazine: https://sqmagazine.co.uk/ai-overviews-statistics/
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AI Overviews are estimated to reach 1.7 billion monthly users -- Presenc AI, Q1 2026: https://presenc.ai/research/ai-overviews-usage-statistics
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Brands cited in AI Overviews earn approximately 120 percent more organic clicks per impression than uncited brands -- Seer Interactive, 2026, via SQ Magazine: https://sqmagazine.co.uk/ai-overviews-statistics/
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Brand-owned domains earn roughly 31 percent of AI Overview citations -- Presenc AI, Q1 2026: https://presenc.ai/research/ai-overviews-usage-statistics
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Perplexity processes approximately 780 million search queries per month -- CEO Aravind Srinivas, Bloomberg Tech Summit, 2025, via DemandSage: https://www.demandsage.com/perplexity-ai-statistics/
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Average Perplexity queries run to 9.4 words versus 3.2 on Google; users ask 5.1 follow-up questions per session and spend an average of 11 minutes per session -- MarGen Perplexity Citation Audit, 2026: https://www.margen.net/perplexity-statistics-2026/
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64 percent of Perplexity users are professionals using the platform for work-related research -- MarGen, Q1 2026: https://www.margen.net/perplexity-statistics-2026/
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Perplexity averages 8.2 cited sources per answer -- MarGen Perplexity Citation Audit, 2026: https://www.margen.net/perplexity-statistics-2026/
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AI Overviews appear on over 80 percent of queries in B2B technology categories -- TheStacc / Ahrefs, 2026: https://thestacc.com/blog/google-ai-overview-statistics/