AI chatbots (ChatGPT, Claude, Perplexity, Gemini) account for just 0.26%[1] of all web traffic. But clicks are only the tip of the iceberg. The vast majority of AI interactions where a brand is mentioned never result in a click.
Based on four independent data sources, this model estimates that every AI click in Google Analytics 4 represents roughly 80 to 330 AI prompts where the brand may have been mentioned in an AI response without the user clicking through.
Ahrefs analyzed traffic to 74,752 websites (Jun 2025 – Mar 2026)[1]
CTR dropped from 0.80% to 0.27% during 2025[5][6]
During 2025, click-through rates from AI platforms dropped by roughly 40% each quarter. This means AI tools are getting better at answering questions without sending traffic onward. For brands, it means more and more mentions happen entirely out of sight, with no trace in Google Analytics 4.
Share of all AI-referred traffic, March 2026[1]
ChatGPT dominates with 82% of all AI-referred traffic, but every platform contributes to invisible impressions.
Analysis of over one million conversations. 24% of usage is information seeking, 29% practical guidance, 24% writing.[2][3]
77% of all usageCTR from AI applications dropped from 0.80% to 0.27% during 2025.[5][6]
CTR: 0.27%31% of all prompts trigger a web search. Commercial queries trigger a search 41% of the time.[9]
31% trigger searchPurchase-intent queries have a CTR of 2.6–4%. The ChatGPT sidebar has a CTR of 6–10% when displayed.[10]
CTR 2,6–4%| Step | Description | Factor |
|---|---|---|
| 1 | Start with 1 click (visible in GA4) | 1 |
| 2 | Search responses with links (CTR ≈ 2–4%)[10] | ×25–50 responses |
| 3 | Search share of prompts (≈ 31%)[9] | ×3.2 prompts |
| Result | Total prompts per click | ≈80–160 |
Note: Each search response typically references 3–5 brands (source: Profound, Search Engine Land), meaning actual brand exposure may be even higher.
| Step | Description | Value |
|---|---|---|
| 1 | Weekly active users, ChatGPT[11] | 900M |
| 2 | Prompts per user/week | ≈15 |
| 3 | Search/guidance prompts (77%)[2] | ≈12 |
| 4 | Total brand-related prompts/week | ≈10 billion |
| 5 | Outbound clicks/week (CTR ≈ 0.27%)[5][6] | ≈30–40 million |
| Result | Multiplier (prompts / click) | ≈250–330× |
Note: Method B is a rough estimate combining data from different measurement contexts. Prompts per user (step 2) and CTR (step 5) come from separate studies with different methodologies. The result indicates order of magnitude rather than a precise figure.
Use the multiplier to estimate your brand's total AI visibility:
Filter by ChatGPT, Perplexity, and Claude as traffic source in Google Analytics 4 to see the click trend.
Create content that answers questions concisely and authoritatively to increase your chances of being cited.
Compare AI referrals month over month to spot trends in your AI visibility.
Enter the number of clicks from AI platforms (ChatGPT, Perplexity, Claude, Gemini) that you see in Google Analytics 4. The calculator estimates how many times your brand may have been mentioned in AI responses without generating a click.
SEO is changing at its core. More and more searches happen through AI assistants, and visibility in those responses requires a new kind of strategy. We help you understand your current AI visibility and build a plan to strengthen it.