ChatGPT is the most-used standalone answer engine — its citation behavior, shopping surfaces, and ads products are a beat of their own.
ChatGPT is the most-measured standalone engine on the record, and the measurements keep saying the territory is open. Semrush's study of 50,000 brands found most topics have no clearly dominant brand; Kevin Indig's analysis of six months of that citation data found only 15.2% of 1,094 categories have a single clear leader, that 89.3% of estimated demand sits in categories with no clear owner, and that the most-cited domain matched the most-mentioned brand just 20.8% of the time. Similarweb reports 95% of ChatGPT's 494 million users also used Google in the same window, and that only 6.8% of U.S. desktop queries carried a citation at all. Writesonic measured ChatGPT omitting the source brand 37% of the time.
Seenmetric founder Misha Petrov checked what ChatGPT, Gemini and Google AI Mode recommend for 3,371 Australian vet clinic listings (2,785 active after…
Running identical, hash-verified ChatGPT prompts over several weeks, Seer Interactive SEO associate Hoa Cong found two runs made eight minutes apart on…
Two independent GA4 analyses published this week find AI referral traffic converts at a premium over Google organic search but remains a small fraction of…
Sistrix compared 48,527 pages cited by ChatGPT, Google AI Mode and AI Overviews in the second quarter of 2026 against uncited pages on the same domain…
ChatGPT cited local news sources for just 0.9% of answers to local-topic questions — crime, planning, housing, council decisions, local events — across…
BrightEdge's AI Hyper Cube measured brand visibility across Google AI Overviews and ChatGPT for holiday-travel questions spanning inspiration, comparison…
OpenAI has extended ChatGPT Ads to 26 additional countries, including 14 more in Latin America (Argentina, Chile, Colombia, Peru) and new markets across…
Adobe senior director Cedric Huesler says OpenAI told him on October 14 that ChatGPT's missing utm_source=chatgpt.com tag — which started disappearing…
OpenAI emailed advertisers that it is automatically turning on "creative enhancements" for all new and existing self-serve ChatGPT Ads campaigns starting…
Tealium said Oct. 6 it added a client-side Measurement Pixel and a server-side Conversions API (CAPI) connector for ChatGPT Ads, letting enterprises route…
A controlled audit asked ChatGPT 300 questions across 19 declared locations, and asked both ChatGPT and Gemini from five network locations, collecting…
OpenAI rolled out a set of ChatGPT Ads updates late last week, per Search Engine Roundtable: wider ad cards and larger, full-width mobile images (with a…
WordPress plugin maker Barn2 said it spent $477 on ChatGPT ads over six weeks, generating 19,154 impressions, 370 clicks and zero conversions across two…
Profound's research blog says the share of ChatGPT answers with cited links carrying a tagged chatgpt.com source link has recovered to about 99% as of…
Profound's research blog attributes ChatGPT's disappearing UTM tags to the rollout of its Intelligent UI answer format rather than a bug — a different…
ChatGPT has stopped appending utm_source=chatgpt.com to its outbound links and now opens them with noopener,noreferrer, which also blocks the referrer…
University of Toronto researchers tracked 90 days of ChatGPT, Gemini and Perplexity answers to commercial questions — 158,099 answers, 468,037 citations…
Ahrefs analyzed 66.6 million free, logged-out ChatGPT-5.6 Luna responses from August and September 2026 and found only 14.4% triggered a web search at…
At Best Buy, dated press releases draw 71.7% of ChatGPT's Black Friday citations versus 10.5% for the retailer's current store hub page, per BrightEdge…
A Peec AI researcher generated 50,000 pages of fabricated statistics with GPT-4.1 for about $50 and published them to test how AI systems source data, per…
Ad-verification vendor TrafficGuard said invalid-click rates on ChatGPT ads ranged from 0.1% to 34% by advertiser, per PPC Land, in an analysis of 40,021…
OpenAI said it has added 20 measurement, attribution and incrementality firms to ChatGPT Ads, including AppsFlyer, LiveRamp, DV Rockerbox, Triple Whale…
UK answer-engine agency Recrawled tested ChatGPT, Gemini, Google AI Overviews and Google AI Mode with 1,608 queries about 40 UK B2B software firms, and…
Profound tracked 883,000 pages across seven AI engines — ChatGPT, Perplexity, Claude, Google AI Overviews, Google AI Mode, Gemini, and Microsoft Copilot…
Insurance companies' own domains are the cited source on branded searches only — one of four question types BrightEdge tracked in ChatGPT and Google AI…
An arXiv paper analyzing 34,960 unbranded prompt-engine observations across 75 anonymized client projects tracked by AI-visibility platform Aiso, covering…
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)…
ChatGPT-5.6 Luna, now OpenAI's default ChatGPT model, runs far more site-targeted searches than its predecessor GPT-5.5, per a Seer Interactive analysis…
Across 74,752 websites tracked by Ahrefs's chatgpt-vs-google.com, all AI chatbots combined sent 3.5 million visitors in March 2026 — 0.28% of the sites'…
OpenAI has launched ChatGPT Ads in Taiwan, Singapore, Indonesia, Malaysia, the Philippines, Thailand and Vietnam, extending the ad platform to more than…
The UK Competition and Markets Authority published strengthened proposals for a "user choice conduct requirement" that would let Android and Chrome users…
Comscore's Q2 2026 AI Intelligence Report, released Sept. 22, found sponsored ads appeared in 47% of gaming-related ChatGPT conversations in June, up from…
ChatGPT's share of AI assistant prompt volume fell from 70% in January 2026 to 50% by June, while Gemini nearly doubled from 17% to 30% and Claude climbed…
ChatGPT named 27.9% fewer B2B tech brands per answer in September 2026 than in March, per BrightEdge — an average of 3.87 brands per response, down from…
OpenAI is testing Sponsored Agents, a ChatGPT ad format that lets a user click into a separate, labeled conversation with a business's own AI agent rather…
Peec AI launched AI referrals, a feature that connects to Google Analytics 4 to show sessions, conversions, and revenue from AI-assistant traffic — broken…
Adform has joined OpenAI's technology platform partner roster for ChatGPT Ads, giving its clients a way to manage ChatGPT campaigns alongside their other…
Amazon Ads said it has partnered with OpenAI to let select U.S. advertisers buy ChatGPT Ads inventory through Amazon DSP, with Delta Vacations named as a…
Profound tested ChatGPT, Gemini, and Claude with personas built from combinations of income, age, gender, and occupation, asking each about credit cards…
A cross-platform audit tested ChatGPT, Perplexity and Google AI Overview on 20 English mental-health questions plus queries in six additional languages…
Peec AI's Tomek Rudzki reports that OpenAI has built its own retrieval index, internally named Labrador, spanning separate vertical indexes for web pages…
NIQ and Similarweb are building an Agentic Commerce Measurement product that tracks AI-driven product discovery across ChatGPT, Gemini, Google AI Mode…
Ten Speed analyzed 170 B2B buyer-evaluation prompts across ChatGPT, Perplexity, Claude and Gemini, generating 7,387 citation appearances tracked via the…
Sensor Tower found ad density on ChatGPT rose 163% between April and August 2026, averaging 26% monthly growth, with about 1,200 unique advertisers active…
A new arXiv preprint describes PersonaGen-1M, a corpus of 1,031,732 synthetic buyer personas spanning 511 industry labels and 4 market contexts, built to…
ChatGPT's top five cited domains for health questions are all government agencies or hospital systems, with YouTube absent from its top ten, while Google…
The European Commission said Monday it designated ChatGPT a Very Large Online Search Engine (VLOSE) under the EU's Digital Services Act, alongside Reddit…
wire analysis connecting two published measurements — both single-source, both ChatGPT-only; Google describes a fan-out technique for AI Mode but no comparable measurement of it has been published
Seer Interactive tracked 1,562 branded prompts about its own company across six AI platforms — ChatGPT, Claude, Gemini, Perplexity, Google AI Overviews…
A Fractl survey of 343 U.S. marketing decision-makers found 81% still refer to their AI search strategy internally as "SEO," with only 27% having formally…
A Norly Research audit of 4,776 food-service venues across two Bali submarkets found ChatGPT, Gemini, Claude and Perplexity failed to recommend at least…
OpenAI added a campaign-level control letting advertisers include or exclude iOS App, Android App or Web from ad delivery, a lever absent since ChatGPT…
Pew Research analyzed almost 500,000 English-language pages from the Common Crawl archive using the Open Pangram detection tool, finding 10% of a July…
Google AI Overviews links to a timestamped moment in 50% of its YouTube citations and to Shorts in 17.5%, versus 0.6% and 1.1% for ChatGPT, according to a…
OpenAI expanded ChatGPT Ads into 31 additional European markets on Aug. 19, including Germany, France, Spain and Italy, bringing the pilot to roughly 40…
An independent analysis of raw traffic from a ChatGPT Plus account found the model injects brand names into its own search queries that the user never…
OpenAI added Mexico and Brazil to ChatGPT Ads on August 17, its first Spanish- and Portuguese-language markets, bringing the total to nine countries, per…
OpenAI is bringing ChatGPT ads to the European Economic Area and Switzerland later this month, limited to Free and Go plans with personalized targeting…
OpenAI is testing a descriptive heading displayed above ads that appear within ChatGPT responses, per Search Engine Roundtable, which spotted the test but…
Similarweb added AI Ads to its Ad Intelligence product on August 13, giving marketers visibility into actual ad creatives and landing pages running inside…
Google AI Overviews and ChatGPT cite different assets within the same social platforms, not just different domains, according to a BrightEdge analysis of…
AI assistants including ChatGPT, Gemini, Google AI Overviews, AI Mode and Microsoft Copilot described real brands more positively when their names scored…
A study by SE Ranking of more than 50,000 commercial prompts across 20 niches found ads appeared on 25.94% of them, with 14.35% of those ads unrelated to…
UGC platforms accounted for 17.1% of domains cited in ChatGPT answers to SaaS buying queries — more than four times publishers' 4.0% — and outcited review…
Gen Z consideration of Claude climbed from 14.2% to 28.1% and of OpenAI from 10.1% to 22.1% between Q1 and Q2 2026, per YouGov BrandIndex data reported by…
OpenAI is testing a multi-product carousel format for ChatGPT product feed ads and will launch ChatGPT Ads in Brazil and Mexico in the coming week, per…
Seer Interactive analyzed 47,097 citations across ChatGPT, Gemini and Perplexity for four brands over a four-month window and found 75% of cited pages had…
Optimove's survey of 648 U.S. consumers found 72% regularly or occasionally use AI tools such as ChatGPT, Claude or Gemini for gift ideas and shopping…
OpenAI is testing a new "Agent" campaign type in ChatGPT Ads Manager that sends users into a Business Agent conversation instead of to the advertiser's…
A geoSurge study found AI models search for familiar brands 3.2 times more often than unfamiliar ones — 55.7% versus 17.4% of the time — per Search Engine…
OpenAI rolled out a batch of ChatGPT Ads updates, including optimized cost-per-click campaigns that bid toward likely conversions, geographic exclusion…
Google AI Mode and OpenAI's ChatGPT are both testing citation cards placed at the bottom of answers — AI Mode anchoring a card at the end of the response…
A Semrush analysis of ChatGPT visibility across 50,000 brands finds most topics still have no clearly dominant brand, and argues AI visibility accrues at…