About
Who is behind Sleipner.
Sleipner 3D is a library of free 3D models and an AI studio that makes new ones. It is run by a sole trader in Stockholm, Sweden.
What is Sleipner 3D?
A library of 108 free, finished 3D models, with 3 packs of models that belong together, and an AI studio that makes a new model from a sentence or changes one with words. Every model is textured, at true scale, and comes in GLB, glTF, FBX, USDZ, Blend and OBJ. AI agents and scripts can use it through an MCP server and an HTTP API.
Who runs Sleipner?
Sleipner 3D is run by Martin Jonsson, a sole trader (enskild näringsidkare) trading as Sleipner, in Stockholm, Sweden. The same name is in our terms of service: it is who you make the agreement with when you use Sleipner 3D.
Since when?
The first library models were published on 29 October 2026. V1, the open beta, is our first public release (November 2026). It is still a beta: things will change, and each release says what it can't do yet.
Are the models made by AI?
Yes, and we say so. Each model starts with AI models: an image model draws the concept and image-to-3D models build the mesh. Then we finish it: our pipeline cleans it into a real-time model with UVs and PBR textures at true scale, and some models get a rig or parts that move. AI output can still have mistakes, so look at the renders before you use a model.
What may I do with the library models?
Use them in anything, personal or commercial, with no fee and no credit needed, under the Sleipner Free Library Licence. It has three rules: don't resell or re-share the models as models, don't claim you made them, and don't train AI on them. It is our own licence, not CC0.
How do I reach Sleipner?
Write to hello@sleipner.ai. It is the one address for questions, support, the licence and your personal data. To report a bad model, send its link and say what is wrong.