# Adthena: ChatGPT advertisers jump 65% in eight weeks as AI Overview queries shorten

Published: 2026-09-25T19:18:11.384Z · Source: PPC Land (https://ppc.land/adthena-chatgpt-advertisers-gain-65-as-ai-overview-queries-shrink/)
Source date: 2026-09-25
Flags: Adthena study — vendor-published
Entities: chatgpt, openai, ai-overviews

ChatGPT's weekly advertiser count rose 65% over eight weeks, from 7,306 in the week of July 9 to 12,075 by August 31 (peaking at 13,009 in early August), according to an Adthena analysis reported by PPC Land. Separately, Adthena found that one- and two-word searches now drive more than half of ad appearances inside Google's AI Overviews in every market measured, reversing a June 2026 pattern in which three- and four-word queries had the majority. Booking.com was the only brand to place among the top five advertisers in three separate markets — the US, EU and Asia — at once.

Why it matters: The two trends point advertisers toward different playbooks at once — building out ChatGPT ad campaigns as the advertiser base swells, while rethinking Google AI Overview bidding around shorter, more generic queries instead of longer ones.

## What this answers

**How many advertisers use ChatGPT ads?**

Adthena counted 12,075 weekly ChatGPT advertisers as of August 31, 2026, up 65% from 7,306 in the week of July 9 — an eight-week span that peaked at 13,009 advertisers in early August.

**What length of search query gets the most Google AI Overview ads?**

One- and two-word searches now generate more than half of Google AI Overview ad appearances in every market Adthena measured, reversing a June 2026 pattern where three- and four-word queries dominated.


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