Amazon Nova AI Hackathon Online Build your way with Amazon Nova $40,000 in prizes Winners announced 13449 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 14078 participants
No More Cyber Bullying! Surrey, United Kingdom Junior Schools only will take part in a hackathon and will make a project to prevent cyberbullying Non-monetary prizes Jul 1 – Sep 18, 2025 66 participants
OpenAI Open Model Hackathon Online Build with gpt-oss, OpenAI’s open weight reasoning models. $30,000 in prizes Winners announced 8655 participants
