#BuildHybridAI 2026 Online Build AI apps that run on-device and in the cloud with Firebase AI Logic. $30,000 in prizes Nov 30, 2026 05:00 PM EST to submit 2448 participants
PayPal AI Hackathon Online Build what’s next with PayPal and AI $67,500 in prizes Winners TBD 35824 participants
Reddit Games and Puzzles Hackathon Online Create a new game or puzzle for the Reddit community! $116,000 in prizes Winners announced 1947 participants