Nebius x NVIDIA Global AI Hackathon Online Build the next frontier of AI on open infrastructure $50,000 in prizes Winners TBD 29869 participants
The WebMCP Challenge Online 10 days for exploring what’s possible with WebMCP $35,000 in prizes Winners announced 7040 participants
Reddit Mod Tools and Migrated Apps Hackathon Online Join Reddit to build moderation tools for the Reddit community! $45,000 in prizes Winners announced 3088 participants
SP26 Cornell Claude Builders Club Hackathon Ithaca, NY, USA Claude Meets Code: Let’s Build! $1,500 in prizes Apr 25, 2026 138 participants