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 14288 participants
UC Berkeley AI Hackathon 2026 Berkeley, CA, USA Come join us at the world's largest AI Hackathon hosted by the team behind Cal Hacks! $96,700 in prizes Jun 20 – 21, 2026 1097 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
OpenAI Open Model Hackathon Online Build with gpt-oss, OpenAI’s open weight reasoning models. $30,000 in prizes Winners announced 8631 participants
