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Where teams ignite.
Weekend-long build sprints with real prizes, live judging and leaderboards. Show up with an idea — leave with a team, a demo, and sometimes a company.
Forge48: AI Agents
$40k prizes48 hours · San Francisco + Online · Jun 4–6 · 240 builders
02days
14hrs
38min
05sec
This edition
Four tracks. One winner each.
Agents
Autonomous tools that do real work.
$10kDev tools
Make builders 10× faster.
$10kClimate
Software for a cooler planet.
$10kWildcard
Surprise the judges.
$10kHow a Forge works
48 hours, start to demo.
1
Form your team
Solo or up to 4. Team formation mixer kicks it off Friday night.
2
Build & log
Ship for 48 hours with mentors on call. Dev logs keep judges in the loop.
3
Submit & demo
Sunday 4pm: submit your project. Live demos + judging follow.
4
Win & keep going
Many teams enter cofounder matching and a 7-day sprint after.
Live leaderboardForge48 · updating
196
Relay
Agents · async dev teammate
293
Tidemark
Climate · grid forecasting
391
Forklift
Dev tools · 1-click migrations
488
Cohort
Wildcard · community OS
585
Loop
Agents · meeting copilot
The archive
Past forges
Forge47: Voice
Won by — Murmur
Mar 2026 · 180 builders
Climate Build
Won by — Tidemark
Feb 2026 · NYC · $40k
Fintech Forge
Won by — Ledgerly
Jan 2026 · 210 builders
Forge45: Health
Won by — Vitals
Dec 2025 · Online