OpenAI Build Week Online Join a global week of building with Codex $100,000 in prizes Winners announced 46675 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
Play with Purpose Hackathon presented by Cox Enterprises Atlanta, GA, USA The Future of Sustainability Non-monetary prizes Jun 11 – 17, 2026 210 participants
