Which whey protein brands does AI recommend?

In 2026, Optimum Nutrition led with about 44% Share of AI across ChatGPT, Gemini, Perplexity and Amazon Rufus.

How is Share of AI for whey protein measured?

Actowiz runs about 140 shopping prompts across four AI assistants, then measures brand presence and cited sources.

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Share of AI · Health

hare of AI Leaderboard — Whey Protein: which brands AI recommends

Name: Share of AI Leaderboard — Whey Protein ( 2026)
Creator: Actowiz Metrics

2026 · refreshed monthly · 140 prompts across 4 assistants

Brands ranked

AI assistants

44%

Leader's Share of AI

140

Prompts run

Monthly

Refresh

When shoppers ask an AI assistant "What's the best whey protein to buy?", only a few whey protein brands make the shortlist. In 2026, across ChatGPT, Gemini, Perplexity and Amazon Rufus, Optimum Nutrition led with about 44% Share of AI, followed by MuscleBlaze and GNC. The biggest driver was youtube reviews.

Share of AI leaderboard — Whey Protein

Real category brands · Share-of-AI figures are a sample preview and update monthly once live tracking is connected

#	Brand	ChatGPT	Gemini	Perplexity	Rufus	Share of AI	Trend
1	Optimum Nutrition	●	◐	●	●	44%	▲ 3
2	MuscleBlaze	●	●	●	●	40%	▲ 3
3	GNC	●	●	◐	●	34%	▼ 1
4	Isopure	●	◐	◐	◐	26%	▼ 1
5	Dymatize	◐	●	◐	◐	22%	▲ 1
6	MyProtein	◐	○	◐	○	13%	▼ 2
7	Ultimate Nutrition	◐	○	○	○	6%	▼ 1
8	AS-IT-IS	○	○	○	○	4%	▲ 3

● frequently ◐ sometimes ○ absent

What the assistants cite

The sources AI leans on when recommending whey protein — where Share of AI is won or lost.

YouTube reviews

32%

Reddit fitness/supplement threads

21%

Nutrition & dietitian blogs

20%

Marketplace reviews (Amazon/HealthKart)

20%

Brand product pages

Movers this month

▲ Gaining

Optimum Nutrition▲
MuscleBlaze▲
Dymatize▲
AS-IT-IS▲

▼ Losing ground

GNC▼
Isopure▼
MyProtein▼
Ultimate Nutrition▼

How to improve your Share of AI

Earn placements in the editorial roundups & expert content assistants cite.
Grow authentic reviews & community discussion — AI weighs consensus.
Keep your product pages clear & structured for accurate extraction.
Track monthly and watch which sources move the answer.

How this report is built

We run about 140 representative buying prompts for whey protein across four assistants, measuring presence, prominence and cited sources — comparable across brands, tracked monthly.