Which is cheaper, KOS or Orgain?

KOS is slightly cheaper at standard pricing. KOS Organic Plant Protein runs about $0.041 per gram of protein at Costco. Orgain Organic Protein runs about $0.046 per gram. Both are widely available at warehouse clubs and grocery channels.

Is KOS or Orgain better for muscle building?

KOS delivers slightly higher protein per scoop (20 g vs 21 g Orgain) with a more complete amino blend. Both are USDA Organic and deliver complete plant protein from multi-source blends. For pure muscle protein synthesis, both work; KOS is the slightly more lifter-focused product.

Which has better flavor, KOS or Orgain?

Orgain has been the flavor benchmark in organic plant protein for over a decade. Creamy Chocolate Fudge, Vanilla Bean and Iced Coffee are widely praised. KOS has improved its flavor lineup significantly with Chocolate, Vanilla, Salted Caramel Coffee and Chocolate Peanut Butter all scoring well. Both are smoother than typical plant proteins.

Are KOS and Orgain both USDA Organic?

Yes, both brands are USDA Organic certified and Non-GMO Project Verified. Both also offer vegan, gluten-free and soy-free formulations across most SKUs. KOS adds B-corp values as well, though Orgain has broader product range across whey and plant categories.

Where can I buy KOS and Orgain?

Both brands are widely available. KOS is famously a Costco staple, also at Amazon, Whole Foods, Sprouts, Vitacost and Target. Orgain is at Walmart, Target, Costco, Amazon, Whole Foods, Sprouts and most US grocery chains. We currently track four KOS SKUs and six Orgain SKUs.

How often do prices update on ProteinPrice.com?

Prices refresh multiple times per day across all 12 tracked US retailers. Check the timestamp on any product page or visit .

KOS vs Orgain 2026

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