OpenAI Build Week Online Join a global week of building with Codex $100,000 in prizes Winners announced 46685 participants
HackUP Portland, OR, USA Portland's first intercollegiate hackathon. The Silicon Forest is coming alive. Vibe at your own risk. Non-monetary prizes Apr 10 – 12, 2026 67 participants
DeveloperWeek 2026 Hackathon San Jose, CA, USA Join the nation's largest challenge-driven in-person and online hackathon @ DeveloperWeek 2026! $23,000 in prizes Feb 2 – 20, 2026 1802 participants
NexHacks Pittsburgh, PA, USA TURING CITY is an immersive 24-hour hackathon where hackers construct the building blocks of a sentient digital metropolis. $68,500 in prizes Jan 17 – 18, 2026 874 participants
Cal Hacks 12.0 San Francisco, CA, USA This year's Cal Hacks is co-hosted by Claude, Fetch AI, AppLovin, and Amazon's Annapurna Labs! Together we'll assemble in SF for a weekend of hacking, friendship, and crazy ideas. $58,100 in prizes Oct 24 – 26, 2025 2161 participants
HackGT 12: Midnight at the Museum Atlanta, GA, USA Unleash innovation after hours at HackGT 12: Midnight at the Museum, September 26-28 $4,000 in prizes Sep 27 – 28, 2025 909 participants
