Gemini AI Hackathon @Google Japan

Due to overwhelming demand, some of you may be on the waitlist for this event. We are very sorry about this situation due to space limitations.
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Whether you're a designer, marketer, founder, student, or engineer -- if you're curious about what you can build with AI, this hackathon is your starting point. No technical background needed.
AI Builders is partnering with Google Japan for Gemini AI Hackathon -- a hands-on, full-day hackathon where you'll go from idea to working prototype using Google's latest AI tools, fresh from Google I/O 2026.
What You'll Build
Go from zero to a working AI project in one day -- an app, an agent, a multimodal tool, a workflow, anything you can imagine
Attend a beginner-friendly workshop that walks you through everything before hacking begins
Form teams (up to 6) or go solo -- your call
Demo your project live and compete for Google Cloud credit prizes
Connect with builders, creators, and founders
Your AI Stack (Straight from Google I/O 2026)
You'll build with the newest tools Google just shipped at I/O 2026:
Gemini 3.5 Flash -- Google's fastest frontier model, purpose-built for agentic workflows and coding. 4x faster than other frontier models while matching them on intelligence. Ideal for building AI agents that reason, use tools, and execute multi-step tasks.
Managed Agents (Gemini API) -- Spin up a fully provisioned agent with a single API call. Your agent gets its own isolated Linux environment to reason, use tools, and execute code -- no infrastructure setup needed.
Google AI Studio -- Prototype and build full-stack apps directly in-browser. New at I/O: build native Android apps with just a prompt, publish directly to Google Play, and integrate with Google Workspace APIs.
Antigravity 2.0 -- Google's agent-first development platform. Orchestrate multiple agents in parallel, create custom agent behaviors with the SDK, and ship production-ready apps.
Your project must integrate Google Cloud products. This is your chance to go hands-on with the tools powering AI teams worldwide -- many of them just days old.
The workshop covers everything you need to get started. No prior experience required.
Agenda
9:30 AM: Check-in
10:00 AM: Opening from AI Builders and Google Japan
10:30 AM: Workshop -- Hands-on walkthrough of Gemini 3.5 Flash, Managed Agents, AI Studio, and Antigravity
11:30 AM: Team formation + Hacking begins
12:30 PM: Lunch
4:30 PM: Hacking ends / Live demos (2 min per team)
5:30 PM: Winners announced & Networking
6:00 PM: Close
Prizes
Winning teams share Google Cloud credits as prizes. All participants receive credits to build with during the hackathon.
Judging Criteria
Use of Google Cloud: Your project must use Google Cloud products (Gemini API, AI Studio, Antigravity, Vertex AI, etc.). Missing integration disqualifies your team from prizes.
Innovation: How creative and original is your approach? Bonus points for using the latest I/O 2026 capabilities -- Managed Agents, multimodal generation.
Completeness: Does it work? Is it demo-ready?
Who Should Join
Everyone. Whether you're a developer, designer, business builder, student, or just AI-curious -- this hackathon is built for you. The workshop at the start gets you up to speed on Google's newest tools, and you'll have mentors and teammates to support you throughout the day.
No coding experience? No problem. With AI Studio's prompt-to-app prototyping and Antigravity's agent-first workflows, some of the best projects come from people who bring fresh perspectives from outside tech.
Team formation happens after the workshop. Work solo or find teammates on the day.
Spots are limited -- register now to secure yours.
About the Hosts
Google: The new way to cloud, providing AI, infrastructure, developer, data, security, and collaboration tools built for today and tomorrow.
AI Builders: A vibrant community dedicated to supporting founders, creators, and innovators who are actively building with AI and shaping the future of technology across Singapore, Tokyo, and San Francisco Bay Area.