David Mao (haichenmao)

Blue Bell, Pennsylvania, United States

xAI Hackathon 2025

Palo Alto, CA, USA

Join us for a 24-hour hackathon to build the next generation of AI applications

Non-monetary prizes
Dec 7, 2025
352 participants

Reddit Games and Puzzles Hackathon

Online

Create a new game or puzzle for the Reddit community!

$116,000 in prizes
Winners announced
1941 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
8495 participants