FIND EVIL! Online AI threats strike in minutes. Build the defender that responds in seconds. $22,000 in prizes Jun 15, 2026 11:45 PM EDT to submit 3688 participants
Google Cloud Rapid Agent Hackathon Online Building Agents for Real-World Challenges $60,000 in prizes Jun 11, 2026 05:00 PM EDT to submit 11073 participants
Build with MeDo Hackathon Online Build creative applications with MeDo, no coding required. Push the boundaries of what you can create. $50,000 in prizes Winners TBD 8456 participants
Agents Assemble - The Healthcare AI Endgame Online Build Interoperable Healthcare Agents at the Intersection of MCP, A2A, and FHIR $25,000 in prizes Winners TBD 4336 participants
Authorized to Act: Auth0 for AI Agents Online Build an agentic AI application using Auth0 for AI Agents Token Vault $10,000 in prizes Winners announced 2868 participants
GitLab AI Hackathon Online You Orchestrate. AI Accelerates. $65,000 in prizes Winners announced 6962 participants
Hex-a-thon Online Build the analysis you wish existed. Join Hex's virtual hackathon to analyze, build, and explore data with AI — all in one place. $10,000 in prizes Winners announced 1453 participants
Kiroween Online Build something wicked for Kiroween, our annual Halloween-themed hackathon where developers dare to code in dark mode $100,000 in prizes Winners announced 4979 participants
Rift Rewind Hackathon Online Your Season, Your Story — League API + AWS AI Services $26,000 in prizes Winners announced 2636 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 14071 participants
Reddit and Kiro: Community Games Challenge Online Reddit and Kiro are hosting a virtual hackathon for the best community game! $45,000 in prizes Winners announced 1929 participants
Fun and Games with Devvit Web Online Create a new game or experience for the Reddit community! $49,000 in prizes Winners announced 2608 participants