Head-to-head comparison updated for 2026. See which protein product comes out on top.
| Attribute | ||
|---|---|---|
| Brand | KOS | Sunwarrior |
| Protein / serving | 20gBest | 17g |
| Calories / serving | 170 | 100Best |
| Fat / serving | 5g | 1.5gBest |
| Carbs / serving | 9g | 2gBest |
| Sugar / serving | 3g | 0gBest |
| Price / serving | $1.33 | $1.10Best |
| Price / gram protein | $0.0667 | $0.0647Best |
| Overall score | 66/100Best | 64/100 |
| Value score | 52/100Best | 50/100 |
| Purity score | 90/100Best | 90/100 |
| Protein source | Plant Blend | Rice Protein |
| Sweetener | monk fruit | stevia |
| Certifications | USDA Organic, Non-GMO | USDA Organic, Non-GMO |
| Dietary tags | Vegan, Gluten-Free, Dairy-Free, Soy-Free | Vegan, Gluten-Free, Dairy-Free, Soy-Free, Keto-Friendly |
| Third-party tested | No | No |
| Buy on Amazon | Buy on Amazon |
KOS Organic Plant Protein has earned a loyal following for achieving something rare in the plant protein world: genuinely good taste. The Chocolate Peanut Butter flavor is frequently cited as one of the best-tasting plant proteins available, thanks in part to the monk fruit sweetener that provides sweetness without the aftertaste common with stevia.
Sunwarrior Classic Protein is one of the pioneering organic plant proteins, using whole-grain brown rice as its sole protein source. The organic, non-GMO formula is remarkably clean with minimal ingredients and is free from all major allergens including dairy, soy, gluten, nuts, and eggs, making it suitable for those with multiple food sensitivities.
KOS Organic Plant Protein edges ahead with an overall score of 66 vs 64. For value, KOS Organic Plant Protein wins with a 52/100 value score.
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Last updated: March 2026
