Home › Protein Powder › Kirkland Signature › Kirkland Signature Whey
Latest three-month snapshot through 2026-08-13 · 5 waves. Use the controls above to change the window.
Protein Powder · 5 waves · n=552 answers, pooled
How often each model brings the brand up in recommendation answers.
| model | share of voice | answers |
|---|---|---|
| ChatGPT | 1% | 2 of 184 |
| Claude | 0% | 0 of 184 |
| Gemini | 3% | 5 of 184 |
Wave-by-wave share of recommendation answers that named this brand.
| wave | share of voice | answers | change |
|---|---|---|---|
| 2026-07-22 | 1% | 1 of 120 | |
| 2026-07-22 | 1% | 1 of 120 | +0 points |
| 2026-07-22 | 3% | 3 of 120 | +2 points |
| 2026-07-23 | 1% | 1 of 120 | -2 points |
| 2026-08-13 | 1% | 1 of 72 | +0 points |
Recurring descriptions in the models' own words, grouped by theme.
“74**, with **25 g protein**, whey isolate/concentrate, and 1 g sugar per serving.”
“It uses a whey isolate/concentrate blend, gives 25 g protein, 1 g sugar, and 3 net carbs per serving.”
“It has 25 g protein, 1 g sugar, and 3 net carbs per serving.”
“| **Naked Whey** (minimal-ingredient whey) | **Kirkland Signature Whey Protein** | Strong value: a 5.”
“74**, with **25 g protein**, whey isolate/concentrate, and 1 g sugar per serving.”
“It has 25 g protein, 1 g sugar, and 3 net carbs per serving.”
“| **Kirkland Signature Whey** | Costco members wanting a more straightforward bulk option | 5.”
“best warehouse-club option...Caveat: availability appears inconsistent by location”
“74**, with **25 g protein**, whey isolate/concentrate, and 1 g sugar per serving.”
“51/lb**) | Strong middle ground: 25 g protein per serving, using whey isolate plus concentrate.”
49 exact quoted mentions in this snapshot, grouped by coded tone. Recent quotes are deduplicated and mixed across models.
“**Kirkland Signature Whey Protein — good Costco option.**”
“Store-brand quality at a lower price point if you have a membership.”
“Have a **Costco membership** and want a slightly cleaner-looking bulk option: **Kirkland Whey**.”
“Kirkland Signature Whey Protein contains 70 servings for $49.99 in-warehouse ($0.71 per serving), or $54.99 online ($0.79 per serving).”
“Best bulk-value option if you have Costco access. It uses a whey isolate/concentrate blend, gives 25 g protein, 1 g sugar, and 3 net carbs per serving.”
“best warehouse-club option...Caveat: availability appears inconsistent by location”
“delivery listing was $56.74 when checked, so warehouse pricing may be better.”
“Good macros—25 g protein and 1 g sugar per serving—and it uses whey isolate plus milk-protein concentrate. Availability is currently inconsistent/out of stock online, and you need Costco access.”
“Strong "middle ground" if you want a large tub with isolate plus concentrate, but Costco pricing and availability are location-dependent, so check warehouse price before assuming it beats MyProtein”
“Often a strong value if you already have a membership. It provides 25 g protein per serving, but is not an apples-to-apples 'single-ingredient, grass-fed' replacement”
Which competitors models suggest when shoppers ask for something cheaper.
5 of 49 mentions appear alongside an identifiable web citation. Citation does not establish causation.
| cited source | mentions |
|---|---|
| reddit.com | 3 |
| muscletech.com | 1 |
| thetastybiteblog.com | 1 |
| tastingtable.com | 1 |
| youtube.com | 1 |
Stores and sites models name as places to buy this brand.
| retailer | mentions |
|---|---|
| Costco | 16 |
| sameday | 7 |
| Costco Same-Day | 3 |
Method: fixed shopper questions asked repeatedly to Claude, OpenAI GPT and Gemini with web search on. Shares are the percentage of recommendation answers mentioning the brand. Quotes are AI outputs; full transcripts are kept as receipts.