AEO INDEX OCTOBER 2026 USA: Chase leads AI’s credit card answers, and nearly one in five citations goes to a card issuer’s own website
In the footwear, airlines, cars and coffee indexes, brand sites supplied 6.2% of citations or less. In credit cards they supplied 19.3%.
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Chase is the card issuer AI names most often, and the one it names first most often. ChatGPT, Gemini and Google AI Overviews mentioned Chase in 87% of 30 answers in the October 2026 AEO Index for Credit Cards and ranked it first in 8, for an AI Rank Score of 61.0. The score runs from 0 to 100 and is weighted by position in the answer, so 100 would mean first place on every engine for every question. Capital One (47.3), American Express (46.0) and Citi (43.3) follow, close together.
The unusual part is where the engines got their information. Of 145 citations, 28 (19.3%) pointed to an issuer’s own website. In the footwear, airlines, cars and coffee indexes from the same edition, that share ran from 1.5% to 6.2%.
The answers were collected on 21 October 2026 from one U.S. location. Analysis is by markaeo.com. Engine-by-engine results are in the full October 2026 report.
Which issuer websites do the engines cite?
americanexpress.com and capitalone.com were cited 6 times each, and chase.com 5 times, all of those in AI Overviews. The split by engine is sharp. Issuer sites made up 31.2% of Gemini’s citations and 24.7% of AI Overviews’. ChatGPT cited none, and took 72.5% of its citations from blogs and smaller publishers.
Third parties still supplied most of the sources, 80.7% of them. nerdwallet.com was the most cited site with 17, followed by youtube.com (13) and cnbc.com (11). The data doesn’t explain why issuer pages get cited so much more here than in the other categories.
Who wins each type of card?
Five issuers split the ten questions:
- Travel and business cards: Chase, at 100, first on all three engines.
- Airline cards: Chase again, at 87, though each engine named a different issuer first.
- Dining: American Express, at 100.
- Student cards and building credit: Discover, at 93 and 100.
- Cashback and gas: Citi, at 93 and 80.
- Balance transfers: Wells Fargo, at 93.
- No annual fee: a tie between Citi and Wells Fargo at 80.
Gas cards produced the widest split. ChatGPT named PenFed first, Gemini chose Citi and AI Overviews picked American Express. PenFed appears in just 3% of answers overall. No engine named Chase for gas cards, the one question where we expected it and didn’t find it. In all, the engines agreed on the top issuer for 4 of the 10 questions.
Does being named mean being picked first?
The widest gap between the two belongs to Capital One. It appears in 70% of answers and was ranked first in 2, coming second on travel, student and credit-building cards. ChatGPT named it in 60% of its answers without putting it first once. Wells Fargo and Discover show the opposite pattern: each was named in 43% of answers and collected five first places.
Some large issuers were missing from many of the questions we expected them on. Bank of America was not named on 5 of 10, and U.S. Bank on 4 of 7.
What does this mean for card issuers?
My read is that credit cards are the one category in this group where a brand’s own pages are part of the answer, at least on Gemini and AI Overviews. That makes card product pages AEO assets in a fairly literal sense. A page that states the rate, the fee and the rewards in plain terms gives an engine something it can cite directly.
ChatGPT is a separate job, though. It cited no issuer sites at all, so getting into its answers runs through the blogs and publishers it reads. An issuer that optimizes only its own pages is working on two engines out of three.
What to watch next
November will show whether the owned-site share stays near 19% or turns out to be a one-month result. Gas and airline cards, both three-way splits this month, are the questions to follow. The October numbers are in the full October 2026 report.
How we measured: we asked ChatGPT, Gemini and Google AI Overviews 10 non-branded credit card questions, for 30 answers in all, collected on 21 October 2026 from a single U.S. location. AI answers vary by time, place and user. The full method and notice are in the report.
Sources
- Answer Engine Daily AEO Index: Credit Cards, October 2026
