How Polyfork Saved 3D Builders Billions of AI Tokens & Won $500K XPRIZE
Everyone can vibe-code a prototype now, but almost nobody turns it into a real business.
Lucas Martinic did: he built Polyfork (1,900+ customizable 3D assets, 175 new every week) solo with Gemini and a factory of AI agents, brought in $12K in revenue in less than 3 months, and won the Build with Gemini XPRIZE out of 26,000+ builders.
He'll break down the system that lets him ship 175 new 3D assets a week.
🏆 Inside the system that won the XPRIZE
Ask an agent for a program, not a picture: why every asset is built as code
Measure, then believe: a judge agent that sends back about two thirds of attempts
Humans in the loop: what 633 send-backs taught him, and how one note becomes a rule for every future build
🔥 His hackathon learnings, from an 80–90% win rate
Idea first: something fresh and clever people would share. With AI handling the technical side, the idea is the most valuable part
Scope tight: a few working pieces that fit together beat many that don't
Polish every detail: smaller but cleaner wins
Make it truly work: no faking things to look bigger
Package it well: video and text are almost half of it, so don't leave them to the last minute
Go solo: you don't need a team anymore, AI has your back
You'll walk away knowing how to turn a one-line idea into a working product with Gemini and frontier models, build an agent factory that checks its own work, and price, distribute and sell what you've built.
Plus a warm-up with tips from our One-Shot Challenge winners. 🔥
Perfect for vibe coders, indie builders and hackathon builders who want to turn their AI projects into something people pay for.
🎤 Speakers
Lucas Martinic - is an XR creative technologist and the builder of Polyfork. He won the Build with Gemini XPRIZE ($500,000) and, with his team, the $100K Meta Horizon Start Developer Competition. He's an XR Bootcamp master trainer.
Aakash Mehta is an XR and AI software engineer and the creator of COPYCAT, a winning One Shot Challenge entry. A two-time XRCC finalist ('25-'26), he is currently building EchoRep, a smart sales assistant delivering real-time product guidance on display glasses. EchoRep started at XRCC '26 and has since been showcased at IFA Berlin and next.app devCon.
📚 Part of the SensAI Open Lecture series: Building with Frontier AI
Join our other sessions:
🗓️ Agenda:
⏰ 10:00 – 10:20 AM PT
🔥 One-Shot Prompting Secrets
👤 Aakash Mehta
📝 The prompts that won: what made them work, and how to get a working app from a single prompt
⏰ 10:20 – 10:40 AM PT
🎯 How to Win Hackathons
👤 Lucas Martinic
📝 His learnings from an 80–90% win rate: picking the idea, scoping, polish and packaging
⏰ 10:40 – 11:05 AM PT
🏆 Inside the XPRIZE-Winning System
👤 Lucas Martinic
📝 Live demo: Gemini writes the brief and reference art, agents build every asset as code, and a judge agent checks every one
⏰ 11:05 – 11:20 AM PT
💸 Product → Paying Customers
👤 Lucas Martinic
📝 How Polyfork made $12K in under 3 months: pricing, licensing, distribution, and the first sale on launch day
⏰ 11:20 – 11:30 AM PT
💬 Open Q&A
📝 Bring your own idea or prototype and get Lucas's feedback
XPRIZE runs some of the world's most legendary innovation competitions. With Google, it challenged builders to create a real AI business in 90 days, with $2M on the line.
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