Sulphur 2 is a censorship-free video generation model based on the LTX 2.3 architecture. Its main function is to support text-to-video and image-to-video creation. It also works with all other LTX 2.3 formats.
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Sulphur 2 sits on the LTX 2.3 video diffusion stack and adds community fine-tuning on roughly 125,000 video clips. The release bundle is self-contained: base safetensors, distillation LoRAs for faster sampling, ComfyUI workflows, and a prompt enhancer that pre-processes prompts before they hit the generator.
The result is a model that behaves like LTX 2.3 in tooling but ships ready to run, with reproducible defaults and a single canonical Hugging Face repository for downloads.
What is Sulphur 2?
Sulphur 2 (model id SulphurAI/Sulphur-2-base) is a community-distributed 9B-parameter video generation model built on top of LTX 2.3. It supports both text-to-video and image-to-video and was released on 2026-05-03 with open weights, distill LoRAs, ComfyUI workflows, and a prompt enhancer.
How is it different from LTX 2.3?
LTX 2.3 is the underlying base model. Sulphur 2 is a community release built on that base, additionally trained on roughly 125,000 video clips and distributed as a self-contained bundle (weights + LoRAs + ComfyUI workflows). If you already run LTX 2.3 locally, Sulphur 2 plugs into the same workflow with minimal changes.
Is the model free to download?
Yes. The weights, LoRAs, and ComfyUI workflows are published on Hugging Face at SulphurAI/Sulphur-2-base and can be downloaded without payment. Always check the current model card for the up-to-date license and usage terms.
