Studio models: PAN 2
PAN 2 world model files repackaged for studio.no.dev, which runs them with uncomfy (uncomfy pan2 and uncomfy-server's PAN2 node). PAN 2 is made by the Institute of Foundation Models (IFM) at MBZUAI.
Original model repository: https://huggingface.co/IFM/PAN2
Files
| File | What it is |
|---|---|
diffusion_models/pan2_int8_convrot.safetensors (34.9 GB) |
PAN 2's 29B DiT in one file. Its 528 large linears are int8 (ComfyUI int8_tensorwise + ConvRot, Hadamard group 256) and its modulation linears are bf16. Keys keep diffusers' names. |
vae/pan2_wan2.2_vae.safetensors (2.8 GB) |
The Wan 2.2 VAE as IFM/PAN2 ships it (vae/diffusion_pytorch_model.safetensors), unchanged |
text_encoders/qwen3.5_9b_int8_convrot.safetensors (9.7 GB) |
Qwen3.5-9B, the text encoder, in ComfyUI's int8 ConvRot layout. A copy of Comfy-Org/MOSS-Image's file, unchanged |
PAN 2 uses Qwen3.5-9B as released, with no fine-tuning. The text encoder file here is the same one MOSS Image uses, so a models folder that already has it for MOSS Image doesn't need a second copy.
📂 models/
├── 📂 diffusion_models/
│ └── 📂 pan2/
│ └── pan2_int8_convrot.safetensors
├── 📂 text_encoders/
│ └── qwen3.5_9b_int8_convrot.safetensors
└── 📂 vae/
└── pan2_wan2.2_vae.safetensors
These files are not a ComfyUI checkpoint. ComfyUI doesn't run PAN 2 yet, and its int8 loader doesn't know this model's key names.
Quality
Against IFM's bf16 release, run through diffusers with the same prompt and seed, the int8 DiT's first velocity is at cosine 0.99997. The clips match in content and motion and differ in small details. At 1248×704, 241 frames (10 s at 24 fps) and 50 steps, a render on a DGX Spark (GB10) takes about 100 minutes, with a peak of 52 GB.
License
PAN 2's code and weights are released by MBZUAI under the Apache License, Version 2.0. These files are modified versions of it and are distributed under the same license. NOTICE carries IFM's notice and lists what we changed. THIRD_PARTY_LICENSES covers Wan 2.2, Qwen3.5-9B and Diffusers, all Apache-2.0. The text encoder file is Comfy-Org's int8 conversion of Qwen3.5-9B, which they distribute under Apache-2.0.
This repository is not an official MBZUAI or IFM release. IFM asks everyone who uses PAN 2 to avoid the out-of-scope uses on its model card, to run it with the recommended guardrails (pan2-guardrail), and to say when content was made with it. These files include no guardrail.