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 2555 participants
Google Cloud Rapid Agent Hackathon Featured Online Building Agents for Real-World Challenges $60,000 in prizes Submissions open soon 2070 participants
Reddit Mod Tools and Migrated Apps Hackathon Featured Online Join Reddit to build moderation tools for the Reddit community! $45,000 in prizes May 27, 2026 09:00 PM EDT to submit 840 participants
Build with MeDo Hackathon Featured Online Build creative applications with MeDo, no coding required. Push the boundaries of what you can create. $50,000 in prizes May 20, 2026 09:00 AM EDT to submit 5725 participants
Agents Assemble - The Healthcare AI Endgame Online Build Interoperable Healthcare Agents at the Intersection of MCP, A2A, and FHIR $25,000 in prizes May 11, 2026 11:00 PM EDT to submit 3881 participants
ZerveHack Online Stop thinking about it. Build it. Zerve AI Hackathon, $10,000 in prizes. $10,000 in prizes Winners TBD 2244 participants
GitLab AI Hackathon Online You Orchestrate. AI Accelerates. $65,000 in prizes Winners announced 6967 participants
DigitalOcean Gradient™ AI Hackathon Online Build smarter. Ship faster. Power the next wave of AI. $20,000 in prizes Winners announced 2622 participants
Gemini Live Agent Challenge Online Redefining Interaction: From Static Chatbots to Immersive Experiences $80,000 in prizes Winners announced 11878 participants
OpenAI Open Model Hackathon Online Build with gpt-oss, OpenAI’s open weight reasoning models. $30,000 in prizes Winners announced 8655 participants