Added support for WAN 2.2 model #281
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entrpn
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Nov 12, 2025
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Can you also make sure Wan2.1 training and inference still runs without issues before this PR goes into main?
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Added support for WAN 2.2 model
This PR introduces support for the WAN 2.2 model and refactors the existing pipeline to dynamically handle multiple model versions.
New Model Support (WAN 2.2)
The configuration for the WAN 2.2 model are added:
base_wan_27b.yml: New configuration file for the WAN 2.2 (27B) model.Refactoring for Multi-Model Support
To allow the system to select between WAN 2.1 and 2.2, several core files were modified:
generate_wan.py: calls the correct pipeline (WAN 2.1 / WAN 2.2) depending on the model_name parameter in config files.wan_utils.py: Updated all transformer loading functions to include a subfolder parameter.base_wan_14b.yml: Added the model_name parameter to conform to the new configuration standard.wan_pipeline.py: The processing pipeline which supports both WAN 2.1 and WAN 2.2 by using separate base classeswan_checkpointer.py: Handles checkpoint loading/saving for both WAN 2.1 and WAN 2.2.wan_checkpointer_test.py: Tests for WAN 2.1 and WAN 2.2 checkpointerWe tested the above pipeline for both WAN 2.1 and WAN 2.2 and the benchmarking numbers can be found here: https://docs.google.com/spreadsheets/d/1GJqOoTUikAqLWedQG0Qu4YQbdQ5IeveHMqnOgi3d1tY/edit?pli=1&resourcekey=0-ywo0BVMZ-W1Vf7kCJhekXQ&gid=1962169097#gid=1962169097