HarborHack 2026 - Agent In The Loop Charleston, SC, USA Embrace the non-human. $1,500 in prizes Oct 23 – 25, 2026 15 participants
RevenueCat Shipaton 2026 Featured Online Ship apps and start making money. $740,000 in prizes Oct 01, 2026 02:45 AM EDT to submit 27583 participants
RoadStar Hackathon Waterloo, Canada Focused on building software solutions for the trucking and logistics industry. $CAD 3,000 in prizes Sep 5 – 13, 2026 114 participants
The WebMCP Challenge Online 10 days for exploring what’s possible with WebMCP $35,000 in prizes Winners TBD 7067 participants
DevNetwork [API + Cloud + AI] Hackathon 2026 Santa Clara, CA, USA Join the nation's largest challenge-driven API + Cloud + AI hackathon @ API World 2026! $39,500 in prizes Aug 17 – Sep 3, 2026 1377 participants
NTU InnovateX Hackathon 2026 Singapore, Singapore Co-organised by NTU Centre in Computational Technologies for Finance (CCTF) and SNZ $20,000 in prizes Jul 27 – Aug 14, 2026 272 participants
Backblaze Generative Media Hackathon: Build with Genblaze on B2 Online Build the next generation of AI media apps. Generate with Genblaze. Store on Backblaze B2. $10,000 in prizes Winners announced 1309 participants
Self-Evolving Agents Hackathon San Francisco, CA, USA Got an idea you've been meaning to build? This is your excuse. Spend a full day building self-evolving agents and multi-agent systems with engineers, founders, and operators. $19,000 in prizes Jul 24, 2026 20 participants
OpenAI Build Week Online Join a global week of building with Codex $100,000 in prizes Winners announced 46697 participants
Worlds in Action Hack [02-LA] Los Angeles, California, USA Build the future of interactive AI worlds - in 48 hours $12,750 in prizes Jul 18 – 19, 2026 167 participants
Reddit’s Games with a Hook Hackathon Online Join Reddit and Phaser to build incredible games for the Reddit community! $40,000 in prizes Winners announced 3064 participants
$1,000 Industrial AI Hackathon Austin, TX, USA Build AI agents that solves a real operational problem for the American Industrial Revolution $1,000 in prizes Jun 26 – 27, 2026 33 participants
GitLab Transcend Hackathon Online Intelligent orchestration, now with context. $20,000 in prizes Winners announced 1560 participants
Google Cloud Rapid Agent Hackathon Online Building Agents for Real-World Challenges $60,000 in prizes Winners announced 14453 participants
DeveloperWeek New York 2026 Hackathon Queens, NY, USA Join the nation's largest challenge-driven in-person and online hackathon @ DeveloperWeek New York 2026! $9,250 in prizes May 25 – Jun 10, 2026 612 participants
DevNetwork [AI + ML] Hackathon 2026 South San Francisco, CA, USA Join the nation's largest challenge-driven AI and ML in-person + online hackathon @ AI DevSummit 2026! $8,000 in prizes May 11 – 28, 2026 1127 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 announced 8354 participants
JacHacks Spring Online Build the future of AI with the Jac, the world's first agentic programming language. $4,200 in prizes Winners announced 233 participants
Internal Tools Hacks Online Create an application which saves a company time and money, leading to a more efficeint workflow and company operations $CAD 1,500 in prizes Winners announced 179 participants
Hackabull VII Tampa, FL, USA Come. Build. Conquer. $5,097 in prizes Apr 25 – 26, 2026 176 participants
Anthropic x Maryland Hackathon College Park, MD, USA 90 minutes. One mission: build something that matters." $5,100 in prizes Apr 24, 2026 291 participants
Zero to One Startup-a-thon Seattle, WA, USA Zero To One is a two-day startup competition where student teams build, refine, and pitch prototypes! $5,750 in prizes Apr 15 – 24, 2026 50 participants
SoCal Claude Builder Club Hackathon Los Angeles, CA, USA A one-day intercollegiate hackathon by Claude Builder Club — building AI for social impact, inspired by Anthropic's vision of a future where technology genuinely helps people. $1,499 in prizes Apr 19, 2026 90 participants
Claude Builder Club x CMUAI Hackathon Pittsburgh, PA, USA Join us for a speedrun hackathon at CMU, organized by Anthropic. This will be a 1.5-hour hackathon, so build and ship quickly! $1,700 in prizes Apr 18, 2026 41 participants