STEMergent Hacks 2026 Online A student hackathon and ideathon to build creative tech solutions for real community problems. Non-monetary prizes Nov 15, 2026 10:30 PM EST to submit 296 participants
Cal Hacks 13.0 San Francisco, CA, USA This year's Cal Hacks is presented by Anthropic, Annapurna Labs, Spacetime, and Hyphenate! Together we'll assemble in SF for a weekend of hacking, friendship, and crazy ideas. $204,408 in prizes Oct 23 – 25, 2026 1918 participants
De Anza Hackathon 5.0 Cupertino, CA, USA Largest Community College Hackathon in Silicon Valley $700 in prizes Oct 16 – 17, 2026 108 participants
Shower Hacks San Francisco, California, USA The winner gets to take a shower $9,550 in prizes Sep 26, 2026 123 participants
OpenAI Build Week Online Join a global week of building with Codex $100,000 in prizes Winners announced 46655 participants