zhenzhen-hyper3d-rodin-v2.5-fal

Where Hunyuan3D gives you "a" 3D model, Hyper3D Rodin v2.5 gives you a 3D model with a quality ladder. The schema is basically a mesh baker's control panel: a tier from Gen-2.5-Extreme-Low up to Gen-2.5-Extreme-High, a quality_mesh_option that goes from 4K Quad (four-sided quads at 4K texture) up to 2M Triangle, five export formats, and a texture-resolution mode. If you've ever been frustrated by a one-shot image-to-3D tool giving you no control over the output, this node is the antidote - it's Rodin (the Deemos product, wrapped here via Zhenzhen's fal proxy) with the knobs actually exposed.

The trade-off is that it's the most expensive and most fiddly 3D node in the pack. Every one of those quality choices is a billed line item. The good news is the pack's defaults are sane: Gen-2.5-Extreme-Low tier, 4K Quad mesh, All materials - which is plenty for a first pass.

How it works

mode is text_to_3d or image_to_3d (up to two reference images via image1/image2 or image_url1/image_url2). Submit to the fal proxy, poll, download, done. Outputs are model_url, response, texture_urls (STRING) and model_3d (FILE_3D), and it's a non-output node, so it can feed downstream graph nodes.

The inputs that actually matter

• tier - the generation quality ladder (Extreme-Low → Extreme-High). This drives the big cost differences; iterate at Low/Medium, only reach for High when you're near done.
• quality_mesh_option - 4K Quad / 8K Quad / 18K Quad / 50K Quad / 100K Quad / 200K Quad (quad-based, cleaner topology) or 2K / 20K / 150K / 500K / 1M / 2M Triangle (raw triangle counts). Quads are the ones that might actually be usable in a game engine; triangles are for when you want raw density.
• geometry_file_format - glb, usdz, fbx, obj, or stl. Pick by downstream use: glb is the universal default, fbx if you're going into a DCC tool, stl if you're printing.
• material - PBR / Shaded / All / None. texture_mode - legacy to high. hd_texture - on for 4K textures.
• geometry_instruct_mode - faithful (stay true to the source) vs creative. is_symmetric - symmetric / balanced / asymmetric / unknown; telling it the subject is symmetric is a real quality lever for characters and objects.
• seed - note this one's max is 65535 (the tooltip says FAL's seed cap), and 0 = random. Actual reproducibility, unlike the cache-only seeds elsewhere in the pack.

Installing it

Manager → search Comfyui-zhenzhen → install, or:

cd ComfyUI/custom_nodes
git clone https://github.com/T8mars/Comfyui-zhenzhen

Restart, paste your api_key into the widget. No model downloads.

Common issues

• Price shock at High/Extreme-High - expected, and the README's fal billing (pre-deduct, refund after) means the number you see at submit isn't final. Budget with the tier, not the final mesh.
• Slow jobs - a 2M-triangle 4K-texture run is a real render. Raise max_poll_attempts; the default hour is usually enough but dense combos can scrape it.
• TAPose, texture_delight, is_micro - advanced Rodin features (pose control, delighting, micro-geometry). Leave them off unless you know what you're doing; they add cost.
• The pack standard gotchas - empty key, 443/VPN-in-TUN-mode for overseas servers, vendor 500s needing a re-run.

If you want one knob that says "better," the other 3D nodes win. If you want to actually steer the mesh quality, texture resolution and export format of a generated model, Rodin is the one, and this node exposes all of it.