OpenAI Open Model Hackathon Online Build with gpt-oss, OpenAI’s open weight reasoning models. $30,000 in prizes Winners announced 8657 participants
Agents In The Loop Hackathon - 2025 San Francisco, CA, USA Build agentic workflows - one that works with us and not (only) for us! $4,500 in prizes Aug 2, 2025 105 participants
Courier Hacks: Productivity Tools Online Take your productivity tools to the next level with Courier! $700 in prizes Winners announced 99 participants
HackPrinceton Spring 2022 Online Collaborate and build out brilliant, innovative, and impactful ideas $14,270 in prizes Winners announced 136 participants