OpenAI Build Week Featured Online Join a global week of building with Codex $100,000 in prizes Jul 21, 2026 08:00 PM EDT to submit 26741 participants
Google Chrome Built-in AI Challenge Online Develop a web application or Chrome Extension that uses one or more Chrome built-in AI APIs to interact with integrated models such as Gemini Nano. $65,000 in prizes Winners announced 8494 participants
Amazon Alexa Skills Challenge: Aging & Engaging Online Build. Have Fun. Make Life Easier. $45,000 in prizes Winners announced 762 participants
