NOV 13–15, 2026 · Buildathon

Build AI that does good.

A weekend buildathon from GTransformer for people who want to point AI at human flourishing: wellbeing, connection, and learning & opportunity. Leave with a working prototype, not just a pitch deck. Also, 1000$ total cash prize money!

When
Fri Nov 13 – Sun Nov 15
Where
Milpitas, Bay Area + Online
Who
Students, AI Enthusiasts, Builders, Founders
Format
Team up, Build together, Demo Sunday.
Prizes
Up to 1000$ total cash prize.
Most hackathons end at the demo. This one is built to continue. GTransformer exists to accelerate AI founders working on human wellbeing, and this weekend is where that starts for a new group of builders.
The GTransformer team
The themes

Three themes. One north star.

Buildathon runs under a single north star, AI for human flourishing, across three tracks. Every project should be able to answer one question: who does this measurably help, and how?

Wellbeing

Help people understand, protect and improve their mental and emotional wellbeing before problems become crises: emotional awareness, burnout, access to care, early warning.

Connection

Move people from isolation or thin digital interaction toward meaningful, safe human connection: belonging, matching, community, and the reason to actually meet.

Learning & opportunity

Expand access to education, skills and economic mobility: AI tutors, learning-gap detection, teacher copilots, career pathways, job matching, financial literacy.

Responsible AI, across all three

Not a separate track, but a requirement for every project. Every team addresses safety, privacy, bias, accessibility, transparency and potential unintended harm.

The weekend

Three days, start to demo.

Arrive with curiosity, a problem you care about, or nothing but the will to build. Teams form on-site, so you don't need one going in.

01FRI · NOV 13
6–8 PM

Kickoff & team formation

Evening kickoff with theme talks from people working in wellbeing, connection, and learning & opportunity. Pitch an idea or join one, form your team, and start ideating before the night is out.

02SAT · NOV 14
9 AM–5 PM

Build day

A full day of building with mentor office hours running throughout. This is where your idea becomes something you can click through, talk to, or watch work.

03SUN · NOV 15
9 AM–5 PM

Demo & Next Steps

Teams demo their builds, get expert feedback, and explore opportunities to keep building with mentors and the GTransformer community.

What you'll leave with

More than a weekend project.

01

A working prototype. Something you can show and click through, not just describe.

02

Feedback that counts. Direct input from mentors and people who work in the problem space you built for.

03

A team, and a network. The people you build with this weekend, plus a wider community of AI-for-good builders.

04

Visibility. Your demo goes in front of GTransformer's community of founders, investors, and mentors.

05

A possible next step. Standout projects may be invited to continue with deeper support from GTransformer.

06

Proof you can move fast. From a blank page to a real prototype in one weekend.