Polyfork permanently open-sources more than 2,600 parameterizable three.js 3D models
Polyfork founder Lucas Martinic posted on Reddit’s r/threejs to announce that its low-poly 3D model library is now permanently free to access. As of the time of the post, it already had more than 2,600 models, with about 200 added each week. Each model is a three.js ES module program, and developers can adjust appearance, state, season, color, clothing, and more through parameters, then export them in .obj, .fbx, .glb, .usd and other formats, compatible with Unity, Godot, Unreal, and web platforms.
The project previously received the $500,000 first prize in Build with Gemini XPRIZE. The award, jointly held by XPRIZE and Google Gemini, required participants to build a scalable revenue-generating business with AI within 90 days and attracted more than 26,000 participants. Polyfork sells 3D models as adjustable programs rather than fixed meshes; early on, it used an AI agent factory to release more than 175 models per week, with 583 in the catalog in the first month and $4,428 in revenue.
The low-poly models are permanently free, while early supporters retain exclusive access to high-definition, high-poly versions. The models can be used directly in projects such as games, animation, 3D websites, and portfolios.
Original source:
Title: Polyfork wins the Build with Gemini XPRIZE for building a scalable AI business in 90 days Publisher: XPRIZE Foundation Publication date: 2026-09-26 URL: https://www.xprize.org/news/polyfork-wins-the-build-with-gemini-xprize Source type: official announcement Verification status: full text read for this report, accessed on 2026-11-07 Supporting content: Lucas Martinic’s Polyfork won a $500,000 prize, models as programs rather than fixed assets, scale of the AI agent factory, early revenue data
ABAB AI Insight
Lucas Martinic (Germany) won the first prize in the 2026 Moonshots LIVE Build with Gemini XPRIZE with Polyfork. The competition was hosted by XPRIZE, with Google Gemini as the technology partner, and required launching an AI-driven revenue-generating business from scratch within 90 days; more than 26,000 builders participated. The judges included Cathie Wood, Palmer Luckey, Mark Pincus, and Logan Kilpatrick. Polyfork’s core idea is to turn 3D assets into parameterized programs rather than one-time mesh files, allowing users to adjust size, color, and structure before downloading.
The project relies on an AI agent factory to generate models at scale. The official announcement said that in the early stage it released more than 175 per week, formed a catalog of 583 in the first month, and generated $4,428 in revenue from 54 paying customers. Later, it announced on Reddit and X that all low-poly models would be permanently free to access, with more than 2,600 at the time, while high-definition versions remained reserved for early supporters. The models are provided as three.js ES modules with source-level parameter control, while also supporting export to multiple engines.
Traditional 3D asset libraries are mostly fixed mesh or texture packs, and modifications require remodelling or external tools. Polyfork defines the models themselves as executable programs, with parameter adjustments directly rebuilding the geometry and reducing the cost of variant management. This stands in contrast to asset libraries such as those released by NVIDIA’s SimReady: the latter focuses on simulation-ready collections of fixed assets, while Polyfork emphasizes code-level customizability and continuous AI generation. Both target gaming and development scenarios, but their mechanisms differ—one is a preset library, the other a collection of parameterizable programs.
Opening access for free lowers the barrier to obtaining low-poly assets, allowing game prototypes, web 3D projects, and portfolios to directly use adjustable models without generating or purchasing variants from scratch. High-definition versions still follow a paid path, creating a tiered structure. For developers, cross-engine compatibility and programmatic parameters reduce repetitive work in the asset pipeline; for Polyfork, the free tier expands adoption while keeping the high-definition tier as a continuing source of revenue. Key metrics to watch are the usage of free models in real projects and whether high-definition subscriptions grow as the catalog expands.
ABAB News · Cognitive Law
3D models are released as parameterizable programs rather than fixed meshes, with variants rebuilt by code instead of saved as separate files.
The low-poly library produced by the 90-day AI agent factory is permanently free, while the high-definition tier remains paid.
Cross-engine export and parameter control coexist, reducing the cost of asset conversion from prototype to multi-platform use.