Published November 10, 2026 · Last updated November 10, 2026 · 9-minute read
TL;DR
- Cofounders mostly come from repeated contact: people you have built something with, not people you messaged once.
- Matching platforms work for introductions. YC’s had made 33,000 matches by October 2021, but it doesn’t publish how many became companies.
- Incubators are the best middle ground. Entrepreneur First and Antler are built around strangers meeting in a cohort, and many incubators run open events you can attend before you apply.
- Test before equity: a hackathon, a 4-week side build, or a set of customer calls together.
- In Bengaluru and San Francisco, most of these events are public but not featured on Luma’s discover page.
The fastest way to find a cofounder is to put yourself in rooms where builders keep showing up, then work on something small with the people you click with before you discuss equity. Matching apps such as YC’s Co-Founder Matching are good for meeting candidates. Incubators and their open events (Entrepreneur First, Antler, South Park Commons, NSRCEL) are better for testing them, because you see the same people several times and watch how they work.
There is an app for finding a cofounder, several in fact, and people still struggle. The published stories in this post share a pattern: two people met, kept meeting, built something small together, and only then had the equity talk. Even the pairs who matched online went looking for an in-person meeting soon after. I’ve been attending and hosting events for a while, and that’s the part I’d underline. The room comes first.
Where do founders actually find their cofounders?
Founders mostly find cofounders among people they’ve already built with: ex-colleagues, hackathon teammates, classmates and incubator cohort-mates. The common thread is shared work, which lets two people see each other’s judgment before they bet a company on it. An Indie Hackers founder put it plainly: friends, family and acquaintances who code are “probably your best bet,” and that’s how they found theirs.
The problem is that most of us don’t have a network of people who want to start companies. If your office friends all want stable jobs, the “people you’ve worked with” route is closed. That’s where cities matter. Bengaluru and San Francisco have a high density of people who want to build, and they gather in public, every week, at events most people never see.
Being in the right city doesn’t get you a cofounder by itself. It just raises the number of chances you get to meet one.
Does online cofounder matching work?
Online matching works for meeting candidates, and the numbers prove it creates volume, but nobody publishes how often it creates lasting companies. YC launched its Co-Founder Matching platform in July 2021 with 9,000 matches already made across 4,500 founders in beta. By October 2021, YC reported that users had sent 130,000 invites, 25% were accepted, and the platform counted 33,000 matches.
There are real success stories. YC names Sequin (YC S21) and Kiwi Biosciences (YC S21) as companies whose founders met on the platform. Sequin’s founders had an instant connection and arranged to meet in person soon after. Kiwi’s founders worked remotely for four months and only met in person after getting into YC. Hona, a medical AI startup, found its third cofounder, Shuying Zhang, through the tool, after the two original founders, friends since middle school, held several meet-and-greets with candidates.
Look closely at what YC’s own data says about place. 50% of the users said they didn’t care where their cofounder lived. Yet 55% of matches were between founders in the same country. People say location doesn’t matter, then pick someone nearby, because building a company is a lot of small decisions made quickly.
| Route | Good at | Weak at |
|---|---|---|
| Matching platforms (YC, r/cofounder) | Volume of introductions, filtering by skills | Testing trust; most matches never meet |
| Incubator cohorts (EF, Antler) | Structured time with strangers who also want to start | Selective, full-time, often equity cost |
| Recurring events (incubator nights, hackathons, builder meetups) | Repeated contact, low cost, seeing people work | Slow; needs you to keep showing up |
| Your existing network | Known trust | Often has few people who want to found |
Why do incubators beat cold DMs for finding a cofounder?
Incubators beat cold DMs because they put people who want to start companies in the same room for weeks, which is the closest thing to working together before you commit. Entrepreneur First built its whole model on investing before a team or idea exists: it backs individuals and expects teams to form inside the cohort. It opened in Bangalore in 2018, and it has run public Find your Cofounder events on Luma. Antler India set up a cohort-based residency in Bangalore on the same logic: come solo, leave with a team.
Choosing the wrong person is expensive. Harvard professor Noam Wasserman, drawing on a database of 6,000 startups and 16,000 founders, found that 65% of high-potential startups that fail do so because of people problems. A cohort doesn’t remove that risk. It does give you weeks of watching someone handle disagreement, deadlines and bad news, which a 30-minute video call can’t.
The part people miss is that you don’t need to get into the programme to use its room. Many incubators and founder communities run open evenings, demo days and office hours. These are often small, often unlisted on Luma’s discover page, and full of exactly the people a programme would have put next to you.
Key takeaways - Matching apps give you names; rooms give you evidence. - YC’s matching platform made 33,000 matches by October 2021 but publishes no match-to-company rate. - 55% of YC matches were in the same country, even though half of the users said location didn’t matter. - Incubator open events let you meet a cohort-quality crowd without applying.
Which incubators and founder communities host events in Bengaluru?
In Bengaluru, the incubator and founder-community calendars worth following include South Park Commons India, NSRCEL at IIM Bangalore, Entrepreneur First, BHIVE Startup Labs, HSR Hacker House, Founder Startup House, AI House and eChai Ventures. Hidden Events already tracks these calendars, along with a few investor calendars such as Elevation Capital and Peak XV’s AI Engineers Day, so their public events show up in the Bengaluru listings even when Luma’s discover page skips them.
The city lists 127 upcoming public Luma events right now, and 82.7% of them aren’t featured on Luma’s discover page. That ratio is why searching Luma alone undercounts what’s happening.
| Calendar | What it is | Why go if you want a cofounder |
|---|---|---|
| NSRCEL, IIM Bangalore | IIM Bangalore’s startup incubator | Early founders and programme alumni in one room |
| South Park Commons India | Community for people before their next company | Built for the stage where you want to start but don’t know what yet |
| Entrepreneur First | Talent investor, pre-team and pre-idea | Its open events are literally about finding a cofounder |
| BHIVE Startup Labs | Startup programme from the BHIVE workspace group | Founder sessions in a workspace full of early teams |
| HSR Hacker House, Founder Startup House | Builder community spaces | Rooms where people ship side projects together |
| AI House | AI builder community | Engineers who already build on weekends |
Start with the Bengaluru startup events list, then the full Bengaluru events page. If you’re new to the city, our Bengaluru events guide explains how the scene is spread across neighbourhoods.
And in San Francisco?
In San Francisco, follow South Park Commons, AGI House, Founders Bay, The Founders Guild, Antler US, Inception Studio and the Berkeley Gateway Accelerator. SF is the bigger market: 344 upcoming public Luma events, with 78.5% not featured on discover. Founder-led calendars such as The Founders Guild and Founders Bay post several events a month, which makes repeated contact easy.
Use the SF startup events list and the SF events page. If you’re flying in for a short trip, cluster your evenings: two weeks of three events a week gets you more repeated faces than two months of one event a week.
How do you test a cofounder before splitting equity?
Test a cofounder by doing real work together for a few weeks before any equity talk: a hackathon, a small shipped project, or a run of customer calls. People on r/Bangalorestartups describe exactly this: they’d rather start by working together to see if there’s trust and chemistry before discussing equity. A hackathon is a 48-hour version of the same test, and our guide on how to find hackathons covers where they’re listed.
Structure helps. Sequin’s founders, according to YC, both answered all 50 questions in First Round’s cofounder questionnaire before committing. The questions cover roles, money, time commitment and what happens if one person wants out. It’s an awkward afternoon, and far cheaper than finding out in month nine.
Watch for three things during the trial: - Speed of follow-through: do they do what they said by when they said? - Disagreement: do you reach a decision, or does one of you go quiet? - Complementary skills: does each of you own something the other can’t do?
What should you do this week?
This week, pick two recurring incubator or founder events in your city, RSVP to both, and plan to go to each one three times. One visit is a mixer. Three visits make you a regular, and regulars get introduced.
Go with a one-line answer to what are you building?, even if the answer is testing two ideas in fintech, talking to shop owners this month. Be specific about what you need: a backend engineer who has shipped payments gets you introductions, while a cofounder gets you sympathy. Our piece on how to spot a high-signal tech meetup helps you skip the 300-person mixers that rarely produce anything.
If you don’t live in Bengaluru or San Francisco, the advice I recently gave a friend on his notice period applies: come for two weeks, stay somewhere cheap, and go to something every evening. You can’t build that kind of luck from a distance.
About the author: Himanshu Saleria, founder of Hidden Events. I love meeting people. I’ve been attending events, hosting them, and picking up patterns along the way for what makes a gathering worth showing up to. Hidden Events surfaces what I’ve been finding. LinkedIn
How we research: event counts come from Hidden Events’ own crawl of public Luma events, refreshed every 4 hours. Other figures link to their original source: YC’s matching launch post, YC’s co-founder preferences data, YC’s matching success stories, TechCrunch on Hona, Built In on Noam Wasserman’s research, TechCrunch on Entrepreneur First’s pre-team model, Entrepreneur First Bangalore, Inc42 on Antler India’s residency, Indie Hackers on finding a technical cofounder.