LTX-2.5 (22B Distilled Transformer) - GGUF Quantizations
This repository contains GGUF quantizations for Lightricks/LTX-2.5, including the 22B distilled transformer model.
These weights are compatible with ComfyUI-GGUF.
Converted Files & Models
1. Main Diffusion Models (diffusion_models/)
- Base Architecture: LTX-2.5 22B Distilled Transformer
- Directory:
ComfyUI/models/diffusion_models/(orComfyUI/models/unet/)
| File | Quant Type | Size | Notes |
|---|---|---|---|
ltx-2.5-22b-distilled-transformer-Q4_0.gguf | Q4_0 | ~11.65 GB | Optimized for 16GB–24GB VRAM GPUs |
ltx-2.5-22b-distilled-transformer-Q8_CR.gguf | Q8_CR | ~20.04 GB | High precision compressed-row quant |
ltx-2.5-22b-distilled-transformer-Q8_0.gguf | Q8_0 | ~21.22 GB | Near FP16/BF16 quality, fits on 24GB+ VRAM |
Example ComfyUI Workflows (workflows/)
This repository includes ready-to-use ComfyUI workflow JSON files in the workflows/ folder:
- Text-to-Video (T2V):
- File:
workflows/video_ltx2_5_t2v-gguf.json - Generates video directly from text prompts using the GGUF transformer.
- File:
- Image-to-Video (I2V):
- File:
workflows/video_ltx2_5_i2v-gguf.json - Animates a single source frame with synchronized audio and motion.
- File:
- First & Last Frame to Video (FLF2V):
- File:
workflows/video_ltx2_5_flf2v-gguf.json - Interpolates seamless video transitions between two keyframe images.
- File:
ComfyUI Setup & Requirements
Required Custom Nodes
- GGUF Loader: molbal/ComfyUI-GGUF (Registry:
comfyui-gguf-reboot)- Node:
UnetLoaderGGUF(select the.gguftransformer model)
- Node:
Additional Model Dependencies
Ensure you place the upstream support weights into their respective folders:
- Text Encoder / CLIP: Gemma 4 12B with projection (
ComfyUI/models/clip/ortext_encoders/) - Video VAE:
ltx-2.5-video-vae-bf16.safetensors(ComfyUI/models/vae/) - Audio VAE:
ltx-2.5-audio-vae-bf16.safetensors(ComfyUI/models/vae/)