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Perfect Keto vs Eight Sleep: Which Is Better?

We tested both Perfect Keto and Eight Sleep. Here’s the side-by-side on price, ratings, pros, cons, and our honest verdict on which to buy in 2026.

Perfect Keto Eight Sleep
Our rating 7.5/10 7.5/10
Price $44.99
Best for
Pros
  • Wide variety of products (MCT oil, exogenous ketones, bars, collagen)
  • Available in both powder and pill forms
  • No artificial additives, sugars, fillers, gluten, soy, or corn
  • Direct-to-consumer model with no MLM
  • Founder is a doctor with transparent product commitments
  • Eliminates nightly thermostat battles with partner
  • Durability: no visible wear after 2+ years of heavy use
  • Heating/cooling and hardware still work flawlessly
  • Sleep tracking data (HRV, respiratory rate, recovery scores) remains accurate
  • Quiet, reliable water pump operation
Cons
  • Protein bars may not work well for everyone
  • Exogenous ketones only temporarily raise blood ketones (2-3 hours)
  • High upfront cost paired with mandatory $15-20/month subscription
  • Without subscription, becomes just an expensive heated blanket
  • Requires periodic water refills and pump maintenance
  • Not worth it for people who don't experience temperature issues at night

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→ See the full ranking: The Best Health We’ve Tested (2026)