Costco vs Target
Costco leads Target by 2.0 points on the Fameproof index, and wins 1 of the three models. Measured across 96 prompts per model per week.
Costco
Retail
77.0/100
Rank 13 on the companies board
Target
Retail
75.0/100
Rank 14 on the companies board
Costco
Per-model score
Target
—
Claude
—
79.0
ChatGPT
73.0
75.0
Gemini
77.0
30-day movement
+0.5
Change
+1.0
Last 7 runs
Answer quality
undefined%
Claude mention rate
undefined%
83%
ChatGPT mention rate
78%
81%
Gemini mention rate
89%
undefined%
Claude prominence
undefined%
66%
ChatGPT prominence
53%
58%
Gemini prominence
52%
Questions about this comparison
Who do AI models mention more, Costco or Target?
Costco. It scores 77.0 on the Fameproof index against 75.0 for Target — a lead of 2.0 points, measured across ChatGPT and Gemini in the run of 5 October 2026.
How is the Costco vs Target comparison measured?
Both are asked about with the same panel of category questions — never questions naming them — repeated on every model each week. The score combines how often each is named, how early in the answer, how much of the topic is covered and how consistent the result is.
Both are ranked on the Company AI Visibility board. Prominence reflects how early in an answer the model names them; mention rate is how often it names them at all. How the score is built.
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