Kiroween 2026 Online Build something wicked and git commit to the darkness. $100,000 in prizes Dec 04, 2026 05:00 PM EST to submit 10142 participants
OpenAI Build Week Online Join a global week of building with Codex $100,000 in prizes Winners announced 46662 participants
Build Resilient Apps with Polkadot Cloud Online Radically open, radically useful $40,000 in prizes Winners announced 2726 participants
World’s Largest Hackathon presented by Bolt Online Build with AI for a shot at some of the $1M+ in prizes. $1,037,500 in prizes Winners announced 129554 participants