README.md

---
title: LTX 2.3 CPU
emoji: 🎬
colorFrom: purple
colorTo: red
sdk: docker
app_port: 7860
pinned: false
license: other
short_description: 22B video diffusion on free CPU via GGUF + ComfyUI
---

# LTX 2.3 CPU

**[LTX 2.3](https://huggingface.co/Lightricks/LTX-2.3) CPU**, `cond_safe` distill 1.1 + Sulphur-2 merge = [10Eros](https://huggingface.co/TenStrip/LTX2.3-10Eros).

## How it works

ComfyUI runs headless with `--cpu --force-fp32 --cache-none`. Models are GGUF (mmap'd from disk, per-layer dequant). Workflow matches RuneXX's proven LTX 2.3 GGUF pattern: `DualCLIPLoaderGGUF` + `SamplerCustomAdvanced` + `CFGGuider`.

| Component | Source | Size | Format |
|---|---|---|---|
| DiT | `unsloth/LTX-2.3-GGUF` distilled-1.1 | 13.4 GB | UD-Q3_K_M GGUF (Unsloth Dynamic 2.0) |
| Text encoder | `unsloth/gemma-3-12b-it-GGUF` | ~6 GB | Q3_K_M GGUF |
| Text projection | `Kijai/LTX2.3_comfy` | 2.2 GB | bf16 safetensors |
| VAE | `Kijai/LTX2.3_comfy` (TaeL tiny VAE) | 22 MB | safetensors |
| LoRA | `TenStrip/LTX2.3_Distilled_Lora_1.1_Experiments` cond_safe | 662 MB | safetensors |

## Performance

First call downloads ~20 GB of models (cached on 50 GB ephemeral disk). Verified benchmark:

| Resolution | Duration | Steps | Time | Hardware |
|---|---|---|---|---|
| 512x320 | 2 sec | 8 (distilled-1.1) | **74 min** | free CPU (2 vCPU) |

## Curl test

```bash
TOKEN="hf_xxx"
SPACE="https://werecooking-ltx-2-3-cpu.hf.space"

EVT=$(curl -s -X POST "$SPACE/gradio_api/call/generate" \
  -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" \
  -d '{"data":["A woman walking through a neon-lit Tokyo alley", 2.0, 8, -1]}' \
  | python -c "import sys,json;print(json.load(sys.stdin)['event_id'])")
curl -sN "$SPACE/gradio_api/call/generate/$EVT" -H "Authorization: Bearer $TOKEN"
```

## Logs

```bash
curl -N -H "Authorization: Bearer $TOKEN" "https://huggingface.co/api/spaces/WeReCooking/ltx-2.3-cpu/logs/build"
curl -N -H "Authorization: Bearer $TOKEN" "https://huggingface.co/api/spaces/WeReCooking/ltx-2.3-cpu/logs/run"
```

## Credits

- [Lightricks/LTX-2.3](https://huggingface.co/Lightricks/LTX-2.3) -- base model
- [Kijai/LTX2.3_comfy](https://huggingface.co/Kijai/LTX2.3_comfy) -- comfy weights + tiny VAE
- [city96/ComfyUI-GGUF](https://github.com/city96/ComfyUI-GGUF) -- GGUF loader with per-layer dequant
- [TenStrip](https://huggingface.co/TenStrip/LTX2.3_Distilled_Lora_1.1_Experiments) -- cond_safe distill LoRA
- [unsloth](https://huggingface.co/unsloth/LTX-2.3-GGUF) -- GGUF quantization

## License

Same as upstream [LTX-2 Community License](https://github.com/Lightricks/LTX-2/blob/main/LICENSE).