American Express
PaymentsPrompt performance
Position when mentioned · grouped by stageHead to head
Who the models name more often, side by side.
Is this you?
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Finance, nearest on the index.
What the numbers say
American Express scores 46.3 out of 100 on the Fameproof index, ranking 47 of 186 companies measured in the run of 26 October 2026. The index is the mean of the per-model scores below.
Visibility is uneven across models: Claude scores it 51.0 while ChatGPT scores it 41.0, a gap of 10.0 points. A brand that is strong on one model and weak on another has a different problem from one that is mid-table everywhere.
Claude names American Express in 59% of answers and places it early enough to score 13% on prominence; ChatGPT names it in 35%.
Across the 24-prompt panel there are 18 prompts where at least one model does not name American Express at all — those are the answers a competitor is winning instead, and the prompt table above shows which.
Measured inside payments rather than the wide financial services pool, American Express scores 42.3 — the fairer question for a buyer already shopping that market, though it cannot be compared across markets.
Questions about this score
What is American Express's AI visibility score?
American Express scores 46.3 out of 100 on the Fameproof index, ranked 47 of 186 companies, measured on 26 October 2026 across Claude and ChatGPT and Gemini.
Which AI model mentions American Express most?
Claude, at 51.0 out of 100, naming American Express in 59% of the answers in its panel. The per-model breakdown is above.
How is American Express's score measured?
With a panel of 24 category questions asked 4 times per model — never questions that name American Express, because a prompt that names you guarantees a mention. The score combines how often it is named, how early in the answer, how much of the topic it covers, and how consistent the result is between repetitions. Full methodology.

