If you are searching for HY Motion ComfyUI, you are probably deciding between running the text-to-motion model locally and using a hosted browser interface. Local ComfyUI gives you maximum control but demands a capable GPU, the model weights, and real setup time; a hosted route gives you a usable draft in minutes, with free daily credits and nothing to install. Neither is universally better — the right choice depends on how much control you need, how often you generate, and whether you already own the hardware.
This comparison is written to be honest about both sides, including the places where local wins.
What Each Route Actually Is
The local ComfyUI route. ComfyUI is a node-based interface for running generative models. Running HY-Motion through it means downloading the model weights, installing the nodes that wrap the model, loading everything on your own GPU, and generating from a workflow graph. You control the graph: sampling parameters, seeds, batch sizes, and how motion generation connects to the rest of your pipeline.
The hosted browser route. Here the model runs behind a service you reach through a browser. At hunyuanmotion.org you type a prompt, generate a 3D human-motion draft, preview it in 3D, and download FBX or JSON. You do not install weights, you do not manage VRAM, and you do not maintain a node environment. What you give up is low-level control.
Both routes produce the same category of output: animated human motion that still needs cleanup before it is production-ready.
The Honest Tradeoffs
Here is the core of the decision in one table.
| Factor | Local ComfyUI | Hosted browser interface |
|---|---|---|
| Upfront setup | Download ComfyUI, nodes, and weights | Sign in, nothing to install |
| Hardware requirement | A GPU with enough VRAM | Any modern browser, no local GPU |
| Time to first result | Hours of setup, then minutes per run | Minutes, including the first run |
| Parameter control | Full, including seeds and sampling settings | Limited to the interface's options |
| Automation | Scriptable inside a larger graph | Limited to exposed features |
| Cost | Hardware, electricity, and your time | Free daily credits, then one-time packs |
| Maintenance | You update nodes and weights | Handled for you |
| Reproducibility | You control exact versions | Depends on the service |
| Best for | Deep customization, batch pipelines | Fast evaluation, occasional drafts |
A few of these rows deserve expansion.
Setup time is the hidden cost
The headline number people quote for local runs is generation time, but that is not where the hours go. First-time setup — finding the right weights, matching node versions, resolving dependency conflicts, and getting the model to load without running out of memory — is the expensive part. Once it works, it works well, but reaching that point is a real project. The hosted route collapses that entire phase into a sign-in.
Control is the real benefit of local
If you need to pin a seed, sweep sampling settings, or wire motion generation into an automated asset pipeline, local ComfyUI is the correct tool. A hosted interface deliberately simplifies the surface area, and simplification means fewer knobs. If your work depends on those knobs, no hosted service will fully replace local.
Cost is not just money
A local setup has no per-run fee, which looks cheaper at high volume. But it also costs hardware and, more importantly, your time — both the setup time and the ongoing maintenance of keeping nodes and weights working. A one-time credit pack at a modest price can be cheaper in practice if you only need occasional drafts. The pricing page lays out the pack options: a $4.90 First Project pack with 180 credits, Pro at $38, and Studio at $129, all one-time rather than subscriptions.
When Each Route Is Right
Choose local ComfyUI if:
- You already have a GPU workstation and a working ComfyUI environment.
- You need full control over sampling parameters and seeds.
- You plan to generate at volume and want to script it into a larger pipeline.
- You need offline operation for privacy or infrastructure reasons.
- You enjoy maintaining the stack and want to experiment at the model level.
Choose the hosted browser route if:
- You want to know quickly whether text-to-motion fits your workflow.
- You do not have a suitable GPU, or do not want to tie one up.
- You need a draft today and can iterate on prompts instead of parameters.
- You work on a laptop or a machine you cannot configure.
- You would rather spend your time animating than maintaining a node environment.
A practical pattern many people land on: use the hosted route to validate prompts and understand what the model can do, then invest in a local setup only if the volume or control justifies it. That sequencing avoids spending a weekend on installation to discover the model does not fit your needs. The online generator is built for exactly that first phase.
How to Get a Draft in 5 Minutes
If you want to see whether this is useful before building anything, this is the short path.
- Sign in. No card is required, and you can claim free credits once a day. That is enough for a few generations.
- Write one action. Describe a single human movement, under roughly sixty words. For example: "a person walks forward, stops, and looks over their shoulder." Describe motion, not appearance — clothing and hair do not matter to a motion model.
- Generate. Wait for the draft. Keep the first prompt simple so you can judge the model's baseline quality.
- Preview in 3D. Orbit the motion and watch it from a couple of angles. Check for limb intersections, foot sliding, and whether the action reads clearly.
- Refine once. Change one thing — the speed, the ending, the direction — and regenerate. Comparing two versions teaches you more than five random prompts.
- Download FBX or JSON. FBX for Blender, Unity, or Unreal; JSON if you want the raw joint data. A 3D viewer helps you confirm the file before importing it.
That is the whole loop. If the draft in step 5 already looks usable as blocking, the workflow fits. If it does not, you have learned that before installing anything.
What the Hosted Route Does Not Do
It is worth stating the limits plainly, because overselling this would waste your time. The hosted interface:
- Does not give you full sampling control. If you need seed pinning and parameter sweeps, run locally.
- Does not remove the cleanup step. Every draft needs retargeting and polish before it ships.
- Does not replace a full animation pipeline. It produces motion; blending, cameras, and rendering are downstream.
- Does not hold your hand about skeleton compatibility. You will still map bones in your engine or DCC tool.
If those limits are acceptable — and for evaluation, prototyping, and blocking they usually are — the hosted route is simply faster to a useful result.
A Note on Affiliations
hunyuanmotion.org is an independent interface. It is not affiliated with Tencent, and it does not host or train the HY-Motion model. It provides a browser-based way to turn text prompts into 3D human-motion drafts and download them as FBX or JSON. You can read more on the about page. If you are comparing this to motion capture or hand animation, the AI motion capture alternative page covers how the approaches differ.
FAQ
Do I need ComfyUI to use HY-Motion at all?
No. ComfyUI is one way to run the model locally, but it is not the only way to get motion out of it. A hosted browser interface runs the model for you, so you can generate drafts without installing ComfyUI, weights, or custom nodes. The choice between them is about control versus convenience, not about access.
Is the hosted route worse quality than running it locally?
The model is the same class of tool in both cases; what differs is the settings you can reach. Local ComfyUI lets you tune sampling parameters tightly, which an expert can use to get the most favorable result. A hosted interface uses sensible defaults. For most evaluation work the quality is comparable, and the hosted route's speed makes it easier to iterate to a better prompt.
How much GPU memory does local HY-Motion need?
That depends on your exact setup, model version, and workflow, so it is not a fixed number — but it is substantial, and insufficient VRAM is the most common reason local runs fail. This is precisely the friction a hosted interface removes: the work happens on the service's hardware, so your own machine's VRAM is irrelevant.
What does it cost to try the hosted route?
Signed-in accounts can claim free credits once a day, with no card required, so you can test the workflow at no cost across several days. If you need more volume, credits are sold as one-time packs rather than a subscription. See the pricing page for current options.
Can I automate generation with the hosted interface?
Only to the extent the interface exposes it. Deep automation — scripted batches, parameter sweeps, integration into a rendering pipeline — is where local ComfyUI pulls ahead, because you control the graph. If your workflow depends on automation, that is a strong argument for the local route.
Which should I start with if I am unsure?
Start with the hosted route. It costs nothing to try and answers the important question first: does text-to-motion produce motion that is useful for your project? If the answer is yes and you need more control or volume, then invest in a local ComfyUI setup. Doing it in this order avoids spending a weekend on installation before you know whether the tool fits.