ComfyUI 3D Model Generator (Microsoft TRELLIS 2): Complete 2026 Guide

Last updated: July 1, 2026

When people search for a ComfyUI 3D model generator from Microsoft, they're almost always looking for one thing: TRELLIS 2 (also written TRELLIS.2), the 4-billion parameter image-to-3D model released by Microsoft Research in December 2025. Run inside ComfyUI, it turns a single 2D photo into a fully textured, production-ready 3D asset in seconds, with no manual retopology and no UV unwrapping.

This guide is the hub overview: what the model is, why ComfyUI is the best place to run it, how it compares to the other 3D nodes inside ComfyUI, and where to start. For the deep step-by-step installer walkthrough, see our companion TRELLIS 2 ComfyUI installation guide.

What Is Microsoft's ComfyUI 3D Model Generator (TRELLIS 2)?

TRELLIS 2 is a state-of-the-art large 3D generative model developed by Microsoft Research. Released in December 2025 under the MIT license, it converts a single image (or text prompt) into a high-fidelity 3D asset complete with PBR (physically based rendering) textures, in seconds.

Verified specifications from the official Microsoft project page and the Hugging Face model card (microsoft/TRELLIS.2-4B):

Because the entire model and its weights are open-source, anyone with a capable NVIDIA GPU can run it locally, free of charge, for unlimited generations. That's the core reason "ComfyUI + Microsoft 3D model generator" became one of the most-searched 3D-AI workflows of 2026.

Why Run Microsoft's 3D Generator Inside ComfyUI?

ComfyUI is a node-based visual interface originally built for Stable Diffusion. Adding the TRELLIS 2 custom node (ComfyUI-TRELLIS2) turns it into a complete AI 3D pipeline. The advantages over running the standalone CLI are significant:

A typical ComfyUI workflow looks like this: generate (or load) a source image, feed it into the TRELLIS Mesh Generator node, pass the geometry to the TRELLIS Texture Generator node to bake PBR materials, then export a .glb file ready for Blender, Unity, Unreal, or 3D printing.

The community request was answered: native TRELLIS 2 nodes now ship through the ComfyUI Manager, and the model has overtaken every other open-source 3D option in the ComfyUI ecosystem.

TRELLIS 2 vs Other ComfyUI 3D Generators

ComfyUI supports several image-to-3D backends. Based on Google's synthesized overview of ComfyUI 3D capabilities, here is how Microsoft TRELLIS 2 compares to the other major nodes:

TRELLIS 2 is the only top-tier option that is both open-source and free for commercial use. Hunyuan3D is also open but has historically trailed on texture fidelity, while Meshy and Tripo are polished but bill per generation.

For a deeper comparison across more tools (Rodin, Hitem3D, etc.), see our Best AI 3D Model Generators 2026 roundup.

Hardware Requirements: Can Your GPU Run It?

TRELLIS 2 is demanding, but the community has built quantized workflows that lower the bar dramatically.

A widely-shared community effort optimized TRELLIS 2 to run on 8 GB video cards (GTX 1080 / RTX 2070 class) instead of the original 24 GB requirement. If your hardware can't keep up, the simplest path is to skip installation entirely and use TRELLIS 2 online on optimized cloud infrastructure.

Quick-Start: Generate Your First 3D Model

If you want the full local installation, our TRELLIS 2 ComfyUI tutorial walks through every step. The short version:

1. Install ComfyUI + ComfyUI Manager
2. Search and install the ComfyUI-TRELLIS2 custom node
3. Load a workflow (or build one): Load Image → TRELLIS Mesh Generator → TRELLIS Texture Generator → Save GLB
4. Feed a clean PNG (background removed for best results)
5. Queue and export your .glb

For 3D head and character models specifically (one of the most popular TRELLIS 2 use cases), our 3D Head Model tool runs the same pipeline in-browser with no setup.

FAQ

Is TRELLIS 2 really from Microsoft?

Yes. TRELLIS 2 was developed by Microsoft Research, with the project led by researchers from Microsoft's 3D generation team. The official project lives at microsoft.github.io/TRELLIS and the model weights at huggingface.co/microsoft/TRELLIS.2-4B.

Can ComfyUI make 3D models?

Yes. ComfyUI generates 3D models through specialized custom nodes, most notably TRELLIS 2 (Microsoft), plus Hunyuan3D, Meshy, and Tripo. Output formats include .obj, .glb, and .stl, and characters can even be rigged or animated in the same UI.

Is Microsoft TRELLIS 2 free?

Yes. TRELLIS 2 is released under the MIT license, making it free for both personal and commercial projects. You can download the weights and run it locally at no cost. The only cost is the GPU hardware required to run inference; optimized community versions lower that to ~8 GB VRAM.

What output formats does TRELLIS 2 produce?

TRELLIS 2 produces 3D Gaussians and 3D meshes. Meshes export as GLB (the recommended format for game engines and web), as well as OBJ and STL. GLB files open directly in Blender, Unity, Unreal, and most 3D printing slicers.

TRELLIS 2 vs Hunyuan3D: which should I use in ComfyUI?

For texture fidelity, transparency, and hard-surface detail, choose TRELLIS 2. For raw speed on lower-end hardware, Hunyuan3D 2 is a strong alternative. Many artists keep both nodes installed.

Related Resources

• TRELLIS 2 ComfyUI Installation Guide: Complete step-by-step installer walkthrough (Windows + Linux)
• TRELLIS 2 ComfyUI Workflow: Downloadable JSON workflows
• Best AI 3D Model Generators 2026: Full tool comparison (Meshy, Tripo, Rodin, Hitem3D, Hunyuan3D)
• How to Turn an Image Into a 3D Model: General image-to-3D workflow guide
• Browse all 3D tutorials: Full Trellis2 blog index

Sources

• Microsoft TRELLIS 2 official project page
• microsoft/TRELLIS.2-4B Hugging Face model card
• ComfyUI GitHub repository (comfyanonymous/ComfyUI)
• Reddit r/comfyui TRELLIS community discussion