Diamond Crystal vs Rumford: AI Share of Voice Comparison
In the latest Famewise run (data as of 2026-08-11), Diamond Crystal was named in 7 AI answers and Rumford in 18, across ChatGPT, Claude and Gemini with web search on and off. Rumford holds the larger share of voice. They are named together in 3 answers.
| Diamond Crystal — answers naming it | 7 |
|---|---|
| Rumford — answers naming it | 18 |
| Share of voice split | Diamond Crystal 28% / Rumford 72% |
| Answers naming both | 3 |
| AI models | OpenAI GPT, Anthropic Claude, Google Gemini |
Updated
Relative share of voice
Of the 25 mentions across the two brands, Diamond Crystal takes 28% and Rumford 72%. They are named together in 3 answers.
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 visibility: the share of this category's answers that name them at least once. Share of mentions is a different cut of the same data — each brand's slice of every brand mention in the category. Every number reflects the latest scheduled run.
Read the full methodology — sample sizes, formulas and refresh frequency →
Frequently asked questions
Is Diamond Crystal or Rumford more visible in AI answers?
In the latest Famewise run, Diamond Crystal is named in 7 AI answers and Rumford in 18. Rumford has the higher share of voice. The two are named together in 3 answers.
How are Diamond Crystal and Rumford 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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