PayPal AI Hackathon Featured Online Build what’s next with PayPal and AI $67,500 in prizes Nov 12, 2026 03:00 PM EST to submit 17960 participants
The Climate Change-Makers Challenge: 2026 Online Join youth from across the world in this three-day challenge to create solutions for our climate crisis! $CAD 2,690 in prizes Winners announced 279 participants
Google Chrome Built-in AI Challenge 2025 Online Innovate with Intelligence: Build the Future of the Web with Gemini Nano and Chrome AI. $70,000 in prizes Winners announced 14088 participants
Reddit Games and Puzzles Hackathon Online Create a new game or puzzle for the Reddit community! $116,000 in prizes Winners announced 1938 participants
Google Chrome Built-in AI Challenge Online Develop a web application or Chrome Extension that uses one or more Chrome built-in AI APIs to interact with integrated models such as Gemini Nano. $65,000 in prizes Winners announced 8484 participants
2024 Halloween Hackathon Online Create a website using an coding language or platform that is Halloween themed and explains the history of Halloween + why we celebrate it. Candy will be given to the winners! $5 in prizes Winners announced 54 participants
Forest Hacks Online Powered by ForestHacks to give beginners an intro to the world of engineering and computer programming. It is a great beginner to intermediate hackathon. Non-monetary prizes Winners announced 1380 participants
