The record
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.
53 items on the wire, newest first. Elsewhere: official · Wikipedia · Wikidata
Peec AI's Tomek Rudzki reports that OpenAI has built its own retrieval index, internally named Labrador, spanning separate vertical indexes for web pages…
Via Peec AI blog ↗ · Sep 4 · · Research, AEO, Engines
OpenAI rolled out a bundle of ChatGPT Ads Manager updates, per Search Engine Roundtable: a plugin that lets advertisers create, edit and troubleshoot…
Via Search Engine Roundtable ↗ · Sep 4 · · Engines, Tools & Vendors
NIQ and Similarweb are building an Agentic Commerce Measurement product that tracks AI-driven product discovery across ChatGPT, Gemini, Google AI Mode…
Via PPC Land ↗ · Sep 3 · · Tools & Vendors, AEO
Ten Speed analyzed 170 B2B buyer-evaluation prompts across ChatGPT, Perplexity, Claude and Gemini, generating 7,387 citation appearances tracked via the…
Via Search Engine Journal ↗ · Sep 3 · · Research, AEO, GEO
Feed-integrated retrieval accounted for roughly 65% of ChatGPT Shopping mode product recommendations as of late August, overtaking web search as the…
Via Profound research blog ↗ · Sep 3 · · Engines, Research, AEO
Comscore has begun tracking sponsored links inside ChatGPT responses using opt-in user-panel data rather than synthetic test prompts, per PPC Land.
Via PPC Land ↗ · Sep 3 · · Engines, Research
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…
Via PPC Land ↗ · Sep 3 · · Engines, Research
The largest public measurement of citation drift re-sampled 82,619 prompts weekly for 17 weeks, from December 17, 2025 to April 8, 2026, producing…
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…
Via arXiv GEO ↗ · Aug 30 · · Research, GEO
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…
Via BrightEdge Blog ↗ · Aug 31 · · Research, AEO
ChatGPT Ads reached $1 billion in annualized revenue run rate in under 200 days after launch, per OpenAI.
Via OpenAI News ↗ · Aug 31 · · Engines, Law & Money
The European Commission said Monday it designated ChatGPT a Very Large Online Search Engine (VLOSE) under the EU's Digital Services Act, alongside Reddit…
Via EU Commission Digital ↗ · Aug 31 · · Law & Money, Engines
Two measurements published nine days apart describe the same mechanism, and neither one names the other.
Via PPC Land ↗ · Aug 30 · · Engines, AEO, Research
Seer Interactive tracked 1,562 branded prompts about its own company across six AI platforms — ChatGPT, Claude, Gemini, Perplexity, Google AI Overviews…
Via Seer Interactive ↗ · Aug 27 · · Research, AEO
BrightEdge's latest weekly AI-search analysis, covering May 17-August 2, 2026 across Google AI Overviews and ChatGPT in nine industries, finds that…
Via BrightEdge Blog ↗ · Aug 27 · · Research, AEO
Promptwatch put per-engine numbers to Reddit's citation decline on August 20: its share of ChatGPT Search citations fell from an average 3.83% (July…
Via Promptwatch ↗ · Aug 20 · · Research, Engines, AEO
BrightEdge launched Agent Edge, a platform that detects AI-agent requests at the CDN layer and serves a lightweight, Markdown-formatted version of a…
Via BrightEdge Blog ↗ · Aug 25 · · AEO, Tools & Vendors
Adthena analyzed nearly 850,000 US and UK AI search queries from March to May 2026 and found retail and fashion queries drew 39% of observed US ad…
Via PPC Land ↗ · Aug 24 · · Engines, Research
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…
Via Search Engine Land ↗ · Aug 24 · · Research, AEO, SEO
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…
Via PPC Land ↗ · Aug 23 · · Research, AEO
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…
Via PPC Land ↗ · Aug 21 · · Engines, Tools & Vendors
OpenAI now preselects "Maximize results," an automated bidding strategy, for new ad groups in ChatGPT Ads Manager Beta, per PPC Land.
Via PPC Land ↗ · Aug 21 · · Engines
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…
Via TechCrunch AI ↗ · Aug 20 · · Research, AEO
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…
Via BrightEdge Blog ↗ · Aug 20 · · Research, AEO
OpenAI's ChatGPT Ads Manager now surfaces view-through conversions as a standalone column with a fixed one-day attribution window, measured from ad…
Via PPC Land ↗ · Aug 19 · · Engines
A Steady Demand analysis of 14,472 AI citations across 1,487 local search queries in the 50 largest U.S. metros found business websites accounted for…
Via Search Engine Land ↗ · Aug 19 · · Research, AEO
Profound analyzed more than 158,000 AI-generated brand claims through its FactCheck tool and found inaccuracy rates of 4.3-6.8% across engines, with…
Via Profound research blog ↗ · Aug 17 · · Research, AEO
Promptwatch found Reddit's share of ChatGPT Search citations fell from an average of 3.83% (Jul.
Via Search Engine Land ↗ · Aug 19 · · Engines, Tools & Vendors, AEO
OpenAI expanded ChatGPT Ads into 31 additional European markets on Aug. 19, including Germany, France, Spain and Italy, bringing the pilot to roughly 40…
Via OpenAI News ↗ · Aug 18 · · Engines, Law & Money
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…
Via PPC Land ↗ · Aug 18 · · Research, AEO, LLMEO
Commercial intent in ChatGPT conversations rose from 13.9% to 19.2% between June 2025 and June 2026, per Profound's analysis of 7.5 million…
Via Profound research blog ↗ · Aug 13 · · Research, AEO
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…
Via PPC Land ↗ · Aug 17 · · Engines, Law & Money
OpenAI is bringing ChatGPT ads to the European Economic Area and Switzerland later this month, limited to Free and Go plans with personalized targeting…
Via PPC Land ↗ · Aug 16 · · Engines, Law & Money
OpenAI is testing a descriptive heading displayed above ads that appear within ChatGPT responses, per Search Engine Roundtable, which spotted the test but…
Via Search Engine Roundtable ↗ · Aug 12 · · Engines
Similarweb added AI Ads to its Ad Intelligence product on August 13, giving marketers visibility into actual ad creatives and landing pages running inside…
Via Similarweb Blog ↗ · Aug 13 · · Tools & Vendors, AEO
Google AI Overviews and ChatGPT cite different assets within the same social platforms, not just different domains, according to a BrightEdge analysis of…
Via BrightEdge Blog ↗ · Aug 13 · · Research, AEO
AI assistants including ChatGPT, Gemini, Google AI Overviews, AI Mode and Microsoft Copilot described real brands more positively when their names scored…
Via Peec AI blog ↗ · Aug 11 · · AEO, Research
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…
Via Search Engine Land ↗ · Aug 10 · · Engines, Research
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…
Via Growth Memo (Kevin Indig) ↗ · Aug 10 · · Research, AEO
AI tools now lengthen the purchase decision for 42% of US shoppers who say they research more before buying, per an RTB House survey of 1,840 US and…
Via PPC Land ↗ · Aug 10 · · Research, AEO
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…
Via Search Engine Journal ↗ · Aug 7 · · Research, AEO, GEO
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…
Via Search Engine Roundtable ↗ · Aug 7 · · Engines, Tools & Vendors
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…
Via Seer Interactive ↗ · Jul 24 · · Research, AEO
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…
Via PPC Land ↗ · Aug 5 · · Research, AEO
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…
Via Search Engine Roundtable ↗ · Jul 31 · · Engines, Tools & Vendors
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…
Via Search Engine Land ↗ · Jul 30 · · Research, AEO, GEO
A new Similarweb report finds 95% of ChatGPT's 494 million users also used Google during the same March-to-May 2026 span, per Search Engine Journal…
Via Search Engine Journal ↗ · Jul 30 · · Research, AEO, SEO
Kevin Indig analyzed six months of ChatGPT citation data from Semrush — 1,094 U.S. categories, five prompts each, over 50,000 brands and 600,000-plus…
Via Search Engine Journal ↗ · Jul 29 · · Research, AEO
Writesonic analyzed roughly 16 million brand appearances across seven AI answer engines over a 30-day window and found citations frequently reference…
Via Search Engine Land ↗ · Jul 29 · · Research, AEO
OpenAI rolled out a batch of ChatGPT Ads updates, including optimized cost-per-click campaigns that bid toward likely conversions, geographic exclusion…
Via Search Engine Land ↗ · Jul 24 · · Engines, Tools & Vendors
OpenAI added tooltips to the conversions column in ChatGPT Ads Manager showing conversion values for view-through and click-through attribution, per…
Via Search Engine Roundtable ↗ · Jul 23 · · Engines
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…
Via Search Engine Roundtable ↗ · Jul 22 · · Google Search, AEO
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…
Glossary: Answer engineAgentic searchQuery fan-outCitation drift
