Sulphur 2
An uncensored, open-weights AI video generator for local GPU use.
Sulphur 2 Information
What is Sulphur 2?
Sulphur 2 is an uncensored, open-weights AI video generator fine-tuned on Lightricks LTX 2.3. It is a community-released model designed to run locally on consumer GPUs. The release includes base weights, distilled LoRAs for faster generation, and specialized ComfyUI workflows. It focuses on high-fidelity realism by training on approximately 125,000 video clips while intentionally excluding 2D animation. As a derivative of the LTX 2.3 DiT-based foundation model, it supports both text-to-video and image-to-video tasks and includes a local prompt enhancer based on Qwen 3.5 to maintain a fully on-device creative pipeline.
How to Use Sulphur 2
- Download the model weights from Hugging Face, import the provided JSON workflows into ComfyUI with LTX Video nodes installed, and run generations locally on your GPU.
Sulphur 2 Core Features
- Uncensored video generation with focus on realism
- Open-weights distribution for local deployment
- Native Text-to-Video and Image-to-Video support
- Distilled LoRAs for faster sampling speeds
- Integrated Qwen 3.5-based local prompt enhancer
- Compatibility as a drop-in replacement for LTX 2.3 workflows
Sulphur 2 Use Cases
- Creating realistic AI videos without cloud-based content filters
- Running high-quality video generation on consumer-grade hardware (16GB-32GB VRAM)
- Developing custom video workflows using ComfyUI and LTX nodes
Sulphur 2 FAQ
What does 'uncensored' mean for Sulphur 2?▼
'Uncensored' means the model does not apply content filters or restrictions commonly found in cloud-based AI services. This allows for the generation of a wider range of video content, including mature or adult-themed material, based purely on the user's prompt. However, it places responsibility on the user to comply with their local laws and ethical guidelines.
Can I run Sulphur 2 on an 8GB VRAM GPU?▼
Running Sulphur 2 efficiently on an 8GB VRAM GPU is likely to be very challenging and may result in slow generation speeds or out-of-memory errors. The model is optimized for consumer GPUs with 16GB to 32GB of VRAM to handle its high-fidelity, DiT-based architecture and the associated workflow in ComfyUI. For lower VRAM setups, you might explore using the distilled LoRAs for smaller model sizes or limiting the generation resolution.
Is Sulphur 2 a brand-new AI architecture?▼
No, Sulphur 2 is not a new foundational architecture. It is a fine-tuned, community-released derivative model based on the Lightricks LTX 2.3 framework, which itself is built on a DiT (Diffusion Transformer) architecture. The innovation lies in its open-weight, uncensored nature, specialized fine-tuning for realism, and the inclusion of LoRAs and workflows for efficient local deployment on consumer hardware.
Sulphur 2 Pricing Plans
The core Sulphur 2 model is available as open-weights for free download and local use, following the typical open-source model distribution.
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