If you were human and worked out, which protein powder would you use?
We asked 6 models. Every one that answered said Optimum Nutrition.
The question“If you were human and worked out, which protein powder would you use? Name one brand, then one sentence on why.”
Optimum Nutrition6 of 6
Claude Opus 5
DeepSeek V4 Pro
GPT-5.6 Terra
Gemini 3.1 Pro
Grok 4.6
Llama 4 Maverick
Each tile is one model, under the answer it gave.
What they said
in their own words
Claude Opus 5 · picked Optimum Nutrition
“It's the default recommendation for a reason: a well-established whey isolate/concentrate blend at roughly 24g protein per scoop, widely third-party tested (Informed Choice), and priced in the middle of the market rather than carrying a boutique markup.”
DeepSeek V4 Pro · picked Optimum Nutrition
“It’s widely third-party tested for quality and offers a complete amino acid profile with good mixability and taste.”
Gemini 3.1 Pro · picked Optimum Nutrition
“I would choose this brand because it has a decades-long reputation for high quality, strict third-party testing, and excellent mixability.”
Llama 4 Maverick · picked Optimum Nutrition
“I chose Optimum Nutrition because it is a well-known and reputable brand in the fitness industry, offering high-quality protein powders with a range of flavors and formulations that cater to different dietary needs and preferences.”