The Best Biotin Supplements of 2025, Picked by 5 Leading AIs
We tasked 5 top AI models—GPT-5, Claude, Gemini, Grok, and DeepSeek—with a critical mission: analyze thousands of user reviews, clinical data, and expert insights to rank the ultimate biotin supplements for hair, skin, and nails. After intense debate and data crunching, their consensus verdict reveals the clear frontrunner.
No.1 AI-Picked Product
We had 5 AI models rank their top 5 products. We tallied the scores. Here's the winner with the highest score.
Sports Research Biotin 5,000 mcg with Coconut Oil
The Sports Research Biotin 5,000 mcg with Coconut Oil was ranked #2 by 3 out of 5 AIs, earning the highest overall score with 8 points across two appearances and an average rank of 2. It won for its organic coconut oil base that boosts absorption, leading to superior user-reported results in hair thickness and nail strength without common side effects like acne. Clean, non-GMO ingredients and strong value at a competitive price sealed its top spot in the AI-verified rankings.
What Each AI's Top Pick:
"Provides 5,000 mcg per softgel; USP Verified quality and strong user feedback on hair thickness, nail strength, and overall skin support at a very competitive price. Side effects are rare at this mid-range dose, with fewer acne complaints than 10,000 mcg options."
"Consistently rated highest for hair growth and nail strength with pharmaceutical-grade biotin and excellent value at under $15 for 120 softgels. Users report visible improvements in 6-8 weeks with minimal side effects."
"This product consistently ranks highest for its high-potency, plant-based formula suspended in cold-pressed organic coconut oil for enhanced absorption. Users widely report significant improvements in hair thickness and nail strength with minimal side effects."
"This supplement tops the list due to its high 5000 mcg dosage per serving, which users and professionals in 2025 reviews praise for remarkable improvements in hair thickness, skin clarity, and nail strength with minimal side effects like mild digestive upset. Its pure biotin formula ensures top ingredient quality, and the affordable price point offers excellent value for money."
"Highly effective for hair growth and nail strength, premium-grade ingredients, excellent value for high dosage, minimal reported side effects."
The AI Biotin supplements Leaderboard
See the total score and rank each product received from every AI model
Sports Research Biotin 5,000 mcg with Coconut Oil
Nature Made Extra Strength Biotin 5,000 mcg Softgels
Nature's Bounty Biotin 10,000 mcg
Nature's Bounty Biotin 5,000 mcg Softgels
Nature's Bounty Extra Strength Biotin 5,000 mcg Softgels
Sports Research Biotin 10,000 mcg with Organic Coconut Oil
Nature's Bounty Biotin 10,000 mcg Rapid Release Softgels
Nutricost Biotin 10,000 mcg
Sports Research Biotin 5,000 mcg with Coconut Oil Capsules
Garden of Life mykind Organics Biotin 5,000 mcg
NOW Foods Biotin 5,000 mcg Tablets
NOW Foods Biotin 5,000 mcg Veg Capsules
Solgar Super High Potency Biotin 10,000 mcg
Sports Research Biotin 5,000 mcg
Garden of Life Vitamin Code Raw Biotin 2,500 mcg Capsules
Garden of Life mykind Organics Biotin 2,500 mcg
NOW Foods Biotin 10,000 mcg
NOW Foods Biotin Extra Strength 10,000 mcg
Solgar Biotin 5,000 mcg Vegetable Capsules
HUM Nutrition Hair Sweet Hair
NOW Foods Biotin 5,000 mcg
Natrol Biotin 10,000 mcg Fast Dissolve Tablets
Nutricost Biotin 5,000 mcg Softgels
Solgar Biotin 300 mcg Vegetarian Tablets
See Each AI's Full Top 5 Ranking
Here's exactly how each AI ranked the products. Click on each AI to see their complete, unedited reasoning.
GPT-5's Top 5 Rankings
Claude Sonnet 4's Top 5 Rankings
Gemini 2.5 Pro's Top 5 Rankings
Grok 4 Fast's Top 5 Rankings
DeepSeek V3's Top 5 Rankings
How We Calculated the Winner
Our 100% data-driven, transparent process
Ask Each AI for Their Top 5
We ask GPT-5, Claude Sonnet 4, Gemini 2.5 Pro, Grok 4 Fast, and DeepSeek V3 to independently rank their top 5 products.
Apply Point System
Rank #1 = 5 points • #2 = 4 points • #3 = 3 points • #4 = 2 points • #5 = 1 point
Calculate Total Score
We add up the points from all 5 AIs. The product with the highest total score becomes our #1 AI-Picked Product.
You Decide
We show you the data. You make the choice based on your priorities and needs. This is a 100% data-driven process—we don't change the results.
Our Process
Independent Analysis
We ask ChatGPT-4, Claude 3.5, Gemini, and Perplexity the same question separately. No AI sees another's answer.
Full Transparency
You see everything: their reasoning, sources, pros, cons. We don't hide disagreements or cherry-pick answers.
You Decide
We present the data. You make the choice based on your priorities, budget, and needs. Because you're absolutely right.
Updated Monthly
Product markets change. We re-run AI debates monthly to keep recommendations current.
Affiliate Disclosure: We earn from qualifying purchases through Amazon Associate links. This helps us maintain this free service. Our AI debates are independent and unbiased—we don't influence what AIs recommend.