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---
language:
- en
license: apache-2.0
tags:
- text-to-image
- image-generation
- flux
---
# FLUX.1 [schnell] 

> **Note:** This repository is an **archived mirror** and is **not** the original upstream source.  
> The original model, weights, and documentation are developed and maintained by **Black Forest Labs**.
>
> All hosted model weights are **unmodified**. Any README edits are purely editorial and do not affect the model, its behavior, or its licensing.
>
> The model is released under the **Apache License, Version 2.0**, which permits use, modification, and redistribution under its terms.
>
> **Cooperation Notice:**  
> The maintainer will cooperate in good faith with the original rights holder or upstream maintainers, consistent with the Apache License 2.0.  
> Requests may be submitted via **Discussions**.
>
> *This repository is not affiliated with or endorsed by Black Forest Labs.*

`FLUX.1 [schnell]` is a 12-billion-parameter rectified flow transformer capable of generating high-quality images from text descriptions.

**Official Announcement:**  
🔗 https://blackforestlabs.ai/announcing-black-forest-labs/

## Official Upstream Sources

- **black-forest-labs/FLUX.1-schnell (original Hugging Face model)**  
  https://huggingface.co/black-forest-labs/FLUX.1-schnell

# Key Features
1. Cutting-edge output quality and competitive prompt following, matching the performance of closed source alternatives.
2. Trained using latent adversarial diffusion distillation, `FLUX.1 [schnell]` can generate high-quality images in only 1 to 4 steps.
3. Released under the `apache-2.0` licence, the model can be used for personal, scientific, and commercial purposes.

## Usage

A full reference implementation of `FLUX.1 [schnell]`, including sampling code, is available in the official GitHub repository:
  https://github.com/black-forest-labs/flux

Developers and creators should rely on the upstream GitHub repository when building applications, tools, or fine-tuning pipelines.

## ComfyUI
`FLUX.1 [schnell]` is available in [Comfy UI](https://github.com/comfyanonymous/ComfyUI) for local inference with a node-based workflow.

---
# Limitations
- This model is not intended or able to provide factual information.
- As a statistical model this checkpoint might amplify existing societal biases.
- The model may fail to generate output that matches the prompts.
- Prompt following is heavily influenced by the prompting-style.

# Out-of-Scope Use
The model and its derivatives may not be used

- In any way that violates any applicable national, federal, state, local or international law or regulation.
- For the purpose of exploiting, harming or attempting to exploit or harm minors in any way; including but not limited to the solicitation, creation, acquisition, or dissemination of child exploitative content.
- To generate or disseminate verifiably false information and/or content with the purpose of harming others.
- To generate or disseminate personal identifiable information that can be used to harm an individual.
- To harass, abuse, threaten, stalk, or bully individuals or groups of individuals.
- To create non-consensual nudity or illegal pornographic content.
- For fully automated decision making that adversely impacts an individual's legal rights or otherwise creates or modifies a binding, enforceable obligation.
- Generating or facilitating large-scale disinformation campaigns.