PayPal AI Hackathon Online Build what’s next with PayPal and AI $67,500 in prizes Nov 12, 2026 03:00 PM EST to submit 34742 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
HackHarvard2026: Hack to the Moon Boston, MA, USA The 11th iteration of the HackHarvard Undergraduate Hackathon Non-monetary prizes Oct 16 – 18, 2026 257 participants
2026 CSESoc Flagship Hackathon Randwick, Australia CSESoc 2026 Flagship Hackathon. Showcase your skills! $1,250 in prizes Jul 10 – 12, 2026 75 participants
