Costco vs Kirkland Signature
How do Costco and Kirkland Signature compare inside AI answers? Across the latest Famewise run, here is each brand's visibility in ChatGPT, Claude and Gemini — and how often they are named together.
Relative share of voice
Of the 441 mentions across the two brands, Costco takes 36% and Kirkland Signature 64%. They are named together in 22 answers.
Category leaderboards
How this is measured
Famewise generates the category-level questions consumers ask AI assistants, then asks them to current OpenAI GPT, Anthropic Claude and Google Gemini models — each question with web search on and off. An extraction model records every brand named in every answer, the position of its first mention, and the sentiment toward it. Brands are ranked by share of voice: the number of answers that mention them. Every number reflects the latest scheduled run.
Frequently asked questions
Is Costco or Kirkland Signature more visible in AI answers?
In the latest Famewise run, Costco is named in 157 AI answers and Kirkland Signature in 284. Kirkland Signature has the higher share of voice. The two are named together in 22 answers.
How are Costco and Kirkland Signature measured?
Famewise asks current OpenAI GPT, Anthropic Claude and Google Gemini models the questions consumers ask in these brands' categories — with and without web search — and records every brand each answer names, its position, and the sentiment toward it.
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