Founder matching · Features guide
The feature that matters most is mutual acceptance: a match forms only when both founders accept an invitation. The profile fields, filters and meetups add context, but YC doesn’t explain how its matching engine ranks people, and it doesn’t say which fields are required. [1] [2]
Add Omnitwine as a preferred source on Google| Feature | What it does | Who it’s for | The catch | Worth using? |
|---|---|---|---|---|
| Mutual acceptance | A match forms only when the invited founder accepts; then you arrange a call | Anyone who wants no one-way pitches | You can’t force a match, and the other person decides | Yes; it is the core rule[1] |
| Profile | Headshot, name, school, employer and a short bio | Everyone who joins | Required fields and length are not listed | Yes; it is what others read before they accept[1] |
| Preference filters | Shows profiles that fit stated preferences, and filters for kinds of people | Founders with a clear list of must-haves | The ranking method is not explained | Yes, to shorten the list; check each profile yourself[1] |
| Approval step | Profiles must be approved before use | All new members | Up to a week; criteria are not published | Required, so start early[2] |
| Startup School course | About 7 weeks at 1 to 2 hours a week, taught by YC partners and industry leaders | Founders who want structure | Optional for matching; 7 to 14 hours in total | Worth it if you have the hours[3] |
| In-person meetups | Co-founder matching meetups in San Francisco and New York City | Founders in those two cities | No dates, frequency or cost listed | Only once a date is listed[1] |
| Report option | A way to report a bad match, mentioned in a 2025 Hacker News reply | Anyone with a bad experience | Known only from that 2025 reply | Use it if you can find it; keep your own records[4] |
YC’s steps run in order: create a profile, see fitting profiles, invite one, and arrange a call once they accept. A match forms only if they accept. That rule protects you from a stream of one-sided pitches, and it means an invitation can simply go unanswered. Plan around that, because the 15-a-week cap makes each invitation a limited resource. [1] [2]
The matching engine shows profiles that fit your stated preferences, and you can filter for kinds of people. YC doesn’t say how it ranks profiles or which preferences count most. Use the filters to shorten the list, then read each profile yourself instead of trusting the order. [1]
Sample profiles show a headshot, name, school, employer and a short bio. YC doesn’t say which fields are required or how long a profile should be. Fill in every sample field, and make the bio specific about what you are building and what you need. For who can see it, see the privacy summary. [1]
The course runs about 7 weeks at 1 to 2 hours a week, taught by YC partners and industry leaders. It isn’t required for matching. It adds 7 to 14 hours on top of the time you spend on invitations, so decide whether that time is worth it before you sign up. [3] [2]
YC lists in-person co-founder matching meetups in San Francisco and New York City, with no dates, frequency or cost. A 2025 Hacker News reply, from a commenter who describes themselves as a YC group partner, pointed to an in-product report option for bad matches. Keep messages and dates in case you need to use it. [1] [4]
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