Model reference · open weights
SANA-WM_chunk_causal is an open-weight video model from Efficient-Large-Model. AxForge deploys and operates it for you on dedicated EU-owned hardware — with the licence handled where one is required.
Available as managed deployment — configured and operated for you on dedicated EU hardware, quoted per deployment.
What it is
| Maker | Efficient-Large-Model |
|---|---|
| Type | Video models |
| Task | Text→video |
| Based on | Efficient-Large-Model/SANA-WM_bidirectional |
| Released | 2026-06-10 |
| Popularity | 58 downloads / month |
| Licence | Open weights |
About
This repository contains the chunk-causal Stage-1 teacher DiT checkpoint for SANA-WM.
It is intended to be used with the public SANA-WM code and reuses the VAE and refiner from Efficient-Large-Model/SANA-WM_bidirectional.
config.yaml: inference config with scheduler.vis_sampler: chunk_flow_euler.dit/sana_wm_chunk_causal_1600m_720p.safetensors: chunk-causal Stage-1 teacher checkpoint.python inference_video_scripts/wm/inference_sana_wm.py \
--config hf://Efficient-Large-Model/SANA-WM_chunk_causal/config.yaml \
--model_path hf://Efficient-Large-Model/SANA-WM_chunk_causal/dit/sana_wm_chunk_causal_1600m_720p.safetensors \
--image asset/sana_wm/demo_0.png \
--prompt asset/sana_wm/demo_0.txt \
--action "w-80,jw-40,w-40,lw-60,w-100" \
--num_frames 961 \
--output_dir results/sana_wm_chunk_causal
The sampler uses interval_k = 1 / num_chunks by default.
From the published model card. Full card on the HuggingFace links in the sidebar.
How it works
Using it via the API
Once AxForge deploys sana-wm-chunk-causal for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (sana-wm-chunk-causal below is illustrative; you get the exact model name on deployment.)
$ curl -sS https://api.axforge.ai/v1/videos/generations \
-H "Authorization: Bearer $AXFORGE_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"sana-wm-chunk-causal","prompt":"a drone shot over a forest"}'
Create an account — your API key is available in the console. 5M tokens/month currently included with every new account at launch.