Join us for the inaugural GDG Build with AI x Hacktoberfest weekend at Virginia Tech: two days, five tracks, one unforgettable build session.

Saturday, Oct 24 is our official MLH Hacktoberfest Hack Day. Build anything with open-source or open-weight AI and compete in Best Open-Source AI Project and Best Use of Gemma 4. Open topic, so bring your wildest idea.

Sunday, Oct 25 is GDG Build with AI day, spotlighting AI for Good: Housing. Build AI that tackles real housing challenges (affordability, access, planning, you name it) and compete in Best Use of Gemini API, Best AI Agent, and GDG AI for Good: Housing. Our housing track feeds into a multi-chapter AI for Good umbrella, so your project keeps living and improving long after the weekend ends.

Whether you're new to Google tools or an experienced developer, there's a track for you. Collaborate, innovate, and learn hands-on through challenges built around Gemini, Gemma, and AI agents. Let's code, connect, and create together.

Bring your ideas, your laptop, and your enthusiasm, plus a Google account for submissions. The event is free and open to all skill levels.

Register now to secure your spot, and let's make this the start of something big.