WAN 2.1 Model Install on Promptus

Why WAN 2.1 is a Big Deal 🌟

So, why is everyone talking about WAN 2.1?

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Well, this model is optimized for accessibility. The 1.3B model runs smoothly on an everyday GPU with just 8GB of VRAM. That means you can generate a 5-second video in about 4 minutes on an RTX 4090.

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Even better — WAN 2.1 handles 1080p videos of any length without losing temporal consistency. That’s a huge leap forward for AI video generation.

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⚡Step 1: Download Promptus

Let’s dive in.

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First, download Promptus. Head over to www.promptus.ai and click the pink Download button.

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Fill out the simple form with your name and email. Once you submit, you’ll get a confirmation page with the download link for the latest Promptus app.

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⚙️Step 2: ComfyUI in Promptus  

Once you’ve installed Promptus, log in and make sure you have your account registered. This ensures you get all the features and functionality.

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Now, click on your profile, then open Manager.

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From here, select Setup ComfyUI. This will create a ComfyUI instance inside Promptus. It only takes a few minutes.

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Once setup is complete, click Run Comfy. Promptus will automatically load the custom nodes and everything you need to start generating videos.

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🧩 Step 3: Load the Workflow

Now let’s load our workflow.

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Click the ComfyUI tab, hit refresh, and you’ll see your configuration loaded.

I’ve prepared a workflow for this demo — you’ll find the link in the description.

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If a node appears missing, don’t worry. For example, the video combine node from the Video Helper Suite can be added quickly through the Manager.

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Just search for ‘WAN’ and download the WAN Video Wrapper node — that’s the best option for this workflow.”*

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🔧 Step 4: Configure Your Models

Next, load your models:

• Load your text encoder (UTM5)
• Load your diffusion model
• Load your VAE

Remember, WAN 2.1 doesn’t use checkpoints, it just runs with the diffusion model.

On lower VRAM GPUs, like 8GB cards, you may want to switch to a diffusion pipeline model instead. It still produces excellent results while being lighter on resources.

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🎬 Step 5: Run & Export Your Video

Now, let’s generate!

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Adjust your prompt, select MP4 output for easy sharing, and queue the workflow.

You can monitor progress directly in the Promptus Manager while your frames are being generated.

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Once complete, you’ll see the rendered video with smooth motion and surprisingly high quality.

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✨ Final Results

Here are a few of the videos I generated earlier with WAN 2.1 on Promptus.

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As you can see, the motion quality is incredible — this really shows how far AI video has come.

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🎯 Wrap-Up

And that’s it! You’ve just learned how to set up and run the WAN 2.1 model inside Promptus.

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If you found this tutorial helpful, please like, subscribe, and leave a comment — I’d love to hear your thoughts and the kinds of videos you create with WAN.

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Remember, you’ll find all the workflow links and download instructions in the description below.

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Promptus windows app for ComfyUI is now available, so give it a try today and start exploring the future of AI video creation.

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Thanks for watching, and I’ll see you in the next one!