OCCHacks Costa Mesa, CA, USA OCC's Third Hackathon — 30 Hours, One Project $2,000 in prizes Oct 10 – 11, 2026 101 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 1082 participants
Open Source Hackfest Online Learn and explore the world of open source by creating hacks that promotes the principle of sharing knowledge for the benefit of the wider community! Non-monetary prizes Winners announced 142 participants
Roo Code Hackathon Online From space missions to social apps, AI is reshaping how we build, and with Roo Code, you can experience that future in real time. Non-monetary prizes Winners announced 217 participants