ComfyUI Node
ZONOS2 Model Loader
Load native ZONOS2 weights with ComfyUI/AIMDO memory tracking.
ZONOS2 Model Loader
- zonos2_model
◄model▾►
◄dtypeauto►
◄attentionauto►
◄download_if_missingtrue►
CategoryZONOS2 TTS
Inputs (4)
| Name | Type | Default | Description |
|---|---|---|---|
| model | COMBO | Checkpoint in ComfyUI/models/zonos2. The BF16 and mixed FP8 presets download from their own Hugging Face repositories. Mixed FP8 is detected from metadata and uses FP8 only for MoE expert gate/up weights. | |
| dtype | COMBO | auto | Runtime weight dtype. Auto preserves a standard checkpoint's dtype and uses BF16 compute for mixed FP8. Mixed FP8 accepts auto or bf16, not fp16. Changing this setting hard-unloads the previous bundle. |
| attention | COMBO | auto | Attention backend. Auto selects FlashAttention on compatible CUDA BF16/FP16 systems and otherwise uses PyTorch SDPA. Changing this setting hard-unloads the previous bundle. |
| download_if_missing | BOOLEAN | true | When enabled, independently download only missing assets from the selected preset's Hugging Face repository. An existing DAC or speaker encoder is reused, while a missing selected checkpoint is still downloaded. When disabled, every required asset must already exist under ComfyUI/models/zonos2. |
Outputs (1)
| Name | Type | Description |
|---|---|---|
| zonos2_model | ZONOS2_MODEL | Loaded ZONOS2 model bundle containing the native language model and DAC decoder, managed by ComfyUI/AIMDO. |