Opens Oct 17.

AI visibility

What AI assistants say about Costco

We asked ChatGPT

“What are the best warehouse clubs? Which would you recommend and why?”

Costco was among the recommendations

Also named:

Sam's ClubBJ's WholesaleWalmart

“Short answer - the three warehouse clubs people usually call “best” in the U.S. are Costco, Sam’s Club, and BJ’s. Which is best for you depends on what you value. Below is a quick comparison and a recommendation based on common shopper priorities; tell me which matters most to you (price, product quality, convenience, payment flexibility, gas/pharmacy, online delivery, etc.) and I’ll recommend the single best fit for…”

B

70/100 AI-readiness

www.costco.com (official site, from public records) · can the AI crawlers read the site? Checked by code, not by a model.

AI assistants can read pages when answering (robots.txt):ChatGPT, Claude, Perplexity, Google, Copilot and Mistral can all fetch your pages when a person asks about you.
AI models may train on the site (robots.txt):No training crawler is blocked, so future model versions can learn about the brand from its own pages.
llms.txt for AI assistants:Not found. An llms.txt gives AI tools a reliable, curated summary of who you are.
Homepage reachable:Loads over HTTPS.
Structured data (schema.org):No JSON-LD found - machines have to guess what the company is.
Title and description:Both present and descriptive.
Sitemap:Listed in robots.txt.
One live question to one assistant, asked by PollyX on Oct 15, 2026 and asked again about once a month. Assistants answer differently every time, so this is a sample, not a score. The full check asks 12 buyer questions of nine assistants and records every page each one reads. How AI visibility is measured

Is Costco the first recommendation, and how is it described?

That was one question to one assistant. The full check asks nine assistants 12 buyer questions each, shows where Costco is first, listed or absent, who is named instead, which pages the assistants read, and what to publish to change it.

Run the full check · €16.99 Ask it yourself, free
Looking for what real people say? See the Costco brand sentiment snapshot.

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