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Quick verdict
Costco / Success by Sesame is the better pick for most patients on overall scoring. Costco bundles Success by Sesame care with discounted self-pay branded GLP-1 at Costco Pharmacy. The medication price is genuinely low for a brand-name pen: the Wegovy or Ozempic injection is $349/mo self-pay, with care from $59/mo on the annual plan. The catch is a paid Costco membership, and the bundle has no member outcome record yet.
That said, Knownwell wins on specific dimensions. Knownwell is the most clinically credentialed name in the new wave: hybrid clinics plus telehealth, founded by a Harvard obesity-medicine physician. Insurance-led model. The opposite of cash-pay compounded culture, and proud of it.
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Side-by-side
| Knownwell | Costco / Success by Sesame | |
|---|---|---|
| Starts from | Insurance-billed (+ med separate) | $408/mo (incl. medication) |
| Monthly cost gap | Costco / Success by Sesame is $91/mo cheaper than Knownwell | |
| Lock-in | Month-to-month | Month-to-month |
| Time to prescription | 14 days | 2 days |
| Consultation type | Live | Video |
| Affiliate network | Direct | CJ |
Score by dimension
Scores out of 10, equal-weighted across five dimensions. How we score. The winner of each dimension is highlighted.
| Knownwell | Costco / Success by Sesame | |
|---|---|---|
| Pricing transparency | 5/10 | 7/10 |
| Cancellation terms | 7/10 | 8/10 |
| Onboarding experience | 5/10 | 7/10 |
| Medication options | 8/10 | 7/10 |
| Member reviews | 9.4/10 | 9/10 |
When to choose Knownwell
Best for primary-care integration
Patients with strong insurance who want primary care plus obesity medicine in one practice.
Knownwell wins on medication options, member reviews on the dimensional scoring. The caveat: Cash-pay-only buyers, uninsured patients or anyone who wants async-only care.
When to choose Costco / Success by Sesame
Best for Costco members
Existing Costco members who want discounted self-pay branded GLP-1 with light telehealth care attached.
Costco / Success by Sesame wins on pricing transparency, cancellation terms, onboarding experience and runs $91/mo cheaper than Knownwell at the entry tier ($208 vs $299). Over a year that's $1,092 you keep. The caveat: Anyone who is not a Costco member, wants a compounded option, or wants a long member-review track record.
If cost is your main filter
Costco / Success by Sesame is the cheaper monthly: $208 all-in vs $299 for Knownwell. That's $91 a month or $1,092a year. The 12-month math matters most if you're planning to maintain on GLP-1 long-term. If you're running a 3-month trial, the $273 delta is small against the cost of stopping early on the wrong dose. Insurance changes the picture: if either program runs prior auth and your plan covers Wegovy or Zepbound, branded with copay can beat both cash-pay totals.
If lock-in is your main filter
Knownwell (month-to-month) and Costco / Success by Sesame (month-to-month) sit at the same cancellation tier. Read both cancellation policies directly before signing; the on-page summary covers the headline but not the deletion-of-account or refund-window edge cases.
FAQ
Is Knownwell cheaper than Costco / Success by Sesame?
Can I switch from Knownwell to Costco / Success by Sesame mid-treatment?
Which program has better member feedback?
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