metadata

language:
  - en
license: apache-2.0
library_name: diffusers
pipeline_tag: text-to-image
tags:
  - text-to-image
  - image-generation
  - shuttle
widget:
  - text: >-
      Venus floating market at dawn, fantasy digital art, highly detailed,
      atmospheric lighting with film-like light leaks, impressive background,
      studio photo style, cinematic, intricate details.
    output:
      url: gallery/1.webp
  - text: >-
      Silent forest, sun barely piercing treetops, mysterious lake turns dark
      red at dawn, reflecting colorful sky. Lone tree on shore with diamond-like
      dewdrops, photorealistic.
    output:
      url: gallery/2.webp
  - text: >-
      A beautiful photo showcases a night waterfall in the jungle, illuminated
      with a subtle blue tint that adds an ethereal touch. Fireflies float
      delicately around, their gentle glow enhancing the magical ambiance of the
      scene.
    output:
      url: gallery/3.webp
instance_prompt: null

Shuttle 3 Diffusion

Prompt
Venus floating market at dawn, fantasy digital art, highly detailed, atmospheric lighting with film-like light leaks, impressive background, studio photo style, cinematic, intricate details.

Prompt
Silent forest, sun barely piercing treetops, mysterious lake turns dark red at dawn, reflecting colorful sky. Lone tree on shore with diamond-like dewdrops, photorealistic.

Prompt
A beautiful photo showcases a night waterfall in the jungle, illuminated with a subtle blue tint that adds an ethereal touch. Fireflies float delicately around, their gentle glow enhancing the magical ambiance of the scene.

Model Variants

These model variants provide different precision levels and formats optimized for diverse hardware capabilities and use cases

Shuttle 3 Diffusion is a text-to-image AI model designed to create detailed and diverse images from textual prompts in just 4 steps. It offers enhanced performance in image quality, typography, understanding complex prompts, and resource efficiency.

You can try out the model through a website at https://chat.shuttleai.com/images

Using the model via API

You can use Shuttle 3 Diffusion via API through ShuttleAI

Using the model with 🧨 Diffusers

Install or upgrade diffusers

pip install -U diffusers

Then you can use DiffusionPipeline to run the model

import torch
from diffusers import DiffusionPipeline

# Load the diffusion pipeline from a pretrained model, using bfloat16 for tensor types.
pipe = DiffusionPipeline.from_pretrained(
    "shuttleai/shuttle-3-diffusion", torch_dtype=torch.bfloat16
).to("cuda")

# Uncomment the following line to save VRAM by offloading the model to CPU if needed.
# pipe.enable_model_cpu_offload()

# Uncomment the lines below to enable torch.compile for potential performance boosts on compatible GPUs.
# Note that this can increase loading times considerably.
# pipe.transformer.to(memory_format=torch.channels_last)
# pipe.transformer = torch.compile(
#     pipe.transformer, mode="max-autotune", fullgraph=True
# )

# Set your prompt for image generation.
prompt = "A cat holding a sign that says hello world"

# Generate the image using the diffusion pipeline.
image = pipe(
    prompt,
    height=1024,
    width=1024,
    guidance_scale=3.5,
    num_inference_steps=4,
    max_sequence_length=256,
    # Uncomment the line below to use a manual seed for reproducible results.
    # generator=torch.Generator("cpu").manual_seed(0)
).images[0]

# Save the generated image.
image.save("shuttle.png")

To learn more check out the diffusers documentation

Using the model with ComfyUI

To run local inference with Shuttle 3 Diffusion using ComfyUI, you can use this safetensors file.

Comparison to other models

Shuttle 3 Diffusion can produce images better images than Flux Dev in just four steps, while being licensed under Apache 2. More examples

Training Details

Shuttle 3 Diffusion uses Flux.1 Schnell as its base. It can produce images similar to Flux Dev or Pro in just 4 steps, and it is licensed under Apache 2. The model was partially de-distilled during training. When used beyond 10 steps, it enters "refiner mode," enhancing image details without altering the composition. We overcame the limitations of the Schnell-series models by employing a special training method, resulting in improved details and colors.