A room full of technical founders, designers, and researchers building the thing they can’t stop thinking about.
You have the link. Send it to one more cracked builder.
This is not a conference. It’s not a recruiting event. And there are no tracks designed to make your idea fit a sponsor slide.
Come with a team or find one Friday morning. Build software, hardware, agents, tools, games, media, or something without a category yet. The only requirement: a real person should be able to use it by Sunday.
We’re keeping the room small on purpose. Every invite comes from someone we’d trust to build beside.
August 28–30, 2026 · All times PT
Waterfront venue revealed after RSVP.
The strongest teams leave with warm founder referrals to Y Combinator and Andreessen Horowitz, plus partner office hours after the weekend.
Referrals are introductions, not guarantees of interview, admission, funding, or investment. The work still has to speak for itself.
It shouldn’t feel like a weekend clone of something we already use.
A real person can touch it, use it, break it, or be changed by it.
The team made hard choices and found the shortest path to truth.
Someone would be genuinely disappointed if this stopped existing.
Andreessen Horowitz
Y CombinatorMake something people want.
For founders before everyone else.
A Y Combinator company.
Technical founders, engineers, researchers, and product-minded designers who can turn an idea into a working thing. You do not need a company, pitch deck, or incorporated entity.
No. Come solo, with one collaborator, or as a team of up to four. We’ll run a short team-formation session Friday morning.
Anything legal that can be demonstrated safely on Sunday. Software, hardware, AI, robotics, developer tools, games, consumer products, and uncategorizable experiments are all welcome.
San Francisco, near the northern waterfront. Confirmed builders receive the exact address and access instructions 24 hours before doors open.
Workspace, meals, late-night snacks, high-speed internet, hardware benches, and cloud credits. Travel and lodging are not included.
Yes—with exactly the kind of builder you’d want beside you at 2 AM when the prototype catches fire. Every application is still reviewed.
Doors open Friday, August 28 at 9:00 AM PT.
Submissions close Sunday, August 30 at 7:00 PM PT.