From 1 September 2025 to 16 June 2026, an integrated Technical SEO + AEO + GEO engagement took this firm to 45K active users (+189.2%), 59K sessions (+149.7%), and 921 tracked lead actions (+59.6%) — while AI assistants sent 1,659 visits that stayed an average of 3 minutes 32 seconds. Every number below is on screen in the client's live GA4.
This professional services firm had a working website and some search presence — but no dependable growth engine behind it. Traffic wasn't compounding, lead volume was flat against the previous period, and the buyers who now start their research inside ChatGPT, Perplexity, and Gemini had almost no path to the firm at all.
The first months went into the signals that decide whether search engines and AI systems can interpret the firm at all: a clear entity layer, consistent machine-readable structure, and indexation hygiene. Ten-month engagements live or die on this foundation — every later gain in the GA4 and Search Console data sits on top of it.
Next, pages were aligned to the questions the firm's buyers actually ask — answer-shaped copy on the service pages, structure that lets an AI assistant quote the firm confidently, and measurement wired so every tracked lead action registered as a GA4 key event. That's why this case can say "376 leads from organic search" instead of "traffic went up."
Finally, visibility was pushed across the AI surfaces themselves — ChatGPT, Perplexity, Gemini, Claude, and Copilot. The result shows up in GA4's source reports as 1,394 ChatGPT sessions and in Google's new AI Assistant channel as visitors who stay more than a minute per session: engaged humans, not bots.
Don't take the screenshots' word for it. This is a screen recording inside the client's live GA4 and Search Console — the ten-month comparison, the channel reports, and the AI-assistant sources, exactly as the platforms report them. Client name kept off screen; everything else untouched.
Google Search Console over the engagement window. 2.62 million impressions is the discovery layer — the firm showing up across a wide set of queries — and 12.9K clicks is what that visibility handed to the site to convert.
GA4 over the same ten months, compared against the previous period. The dotted previous-period line stays under the current one for the whole window — this is steady, compounding growth, not one lucky month propping up an average.
Where do the leads come from? GA4's channel report answers it: organic search produced 376 key events — 40.83% of all 921 tracked lead actions — at a 1.63% session key-event rate, the strongest conversion rate of any major channel and more than double direct traffic's 0.67%. Search isn't just filling the top of the chart; it's the channel doing the converting.
This is the part most agencies can't show you. GA4's source reports break out every AI assistant sending visitors to the firm — and Google's new AI Assistant channel (added to GA4 in May) recorded 61 sessions averaging over a minute each. These are people reading, not bots bouncing.
| AI source | Sessions | Engaged | Engagement rate |
|---|---|---|---|
| ChatGPT | 1,394 | 809 | 58.03% |
| Perplexity | 133 | 65 | 48.87% |
| Gemini | 86 | 40 | 46.51% |
| Copilot | 55 | 29 | 52.73% |
| Claude | 37 | 20 | 54.05% |
ChatGPT is the headline: 1,394 sessions with 809 engaged (58.03%) — an engagement rate 38.3% above the site average. The chatgpt.com/ai-assistant slice alone averaged 1m 09s per session.
Consolidated in a single AI-source view — same GA4 data, one dashboard — the window shows 1,659 AI visits (+621.3%), 942 engaged sessions (+691.6%), and 1,385 users, 1,100 of them new (+816.7%), at a 3m 32s average duration. And that's the floor, not the ceiling: GA4 only credits an AI assistant when the referral survives, so the AI-influenced visits that arrive as direct or branded search sit on top of these numbers.
The GA4 previous-period comparison runs under the current line for the full ten months — +189.2% active users built week after week, not one viral spike that flatters an average.
921 key events, with 376 of them (40.83%) from organic search at a 1.63% session key-event rate — the strongest of any channel. The numbers going up only matter because the lead actions went up with them.
ChatGPT's 1,394 sessions held a 58.03% engagement rate, and Google's new AI Assistant channel averaged over a minute per session. Across all AI sources, average visit duration was 3m 32s.
GA4 only labels a visit "ChatGPT" when the referral survives. Plenty of AI-influenced journeys land as direct or branded search — so the 1,659 tracked AI visits are the floor of the channel's impact, not the ceiling.
This is what AI search done properly looks like: measured, not promised.
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