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Black Forest LabsReleased August 1, 2024

FLUX.1 Schnell

Open Source12B parameters

FLUX.1 Schnell is Black Forest Labs's entry in a crowded field.

Context

N/A (image)

Input

Free (open)

Key Specifications

🏆

Arena Rank

Not disclosed

📐

Context Window

N/A (image)

📥

Input Price

per 1M tokens

Free (open)

📤

Output Price

per 1M tokens

Free (open)

🧠

Parameters

12B

🔓

Open Source

Yes

Best For

Fast image generationprototypingdevelopment

About FLUX.1 Schnell

FLUX.1 Schnell, developed by Black Forest Labs, is an open-source image generation model with 12 billion parameters optimized for fast generation speed. The German word 'schnell' (fast) reflects its design priority: producing quality images in fewer inference steps than standard diffusion models. The model targets prototyping, development, and applications where generation speed outweighs maximum image quality. Free and fully open-source under the Apache 2.0 license, it can be self-hosted, fine-tuned, and integrated into custom applications without cost. FLUX.1 Schnell runs on consumer GPUs and delivers results in seconds. It has become popular in the open-source community as a fast alternative to the proprietary FLUX.1 Pro. The model demonstrates Black Forest Labs' strategy of offering both free open-source and premium commercial models across different quality-speed tradeoff points.

Pricing per 1M tokens

Input Tokens

Free (open)

Output Tokens

Free (open)

Compare FLUX.1 Schnell

See how FLUX.1 Schnell stacks up against other leading AI models

FLUX.1 Schnell vs FLUX.1 ProCompare →FLUX.1 Schnell vs Flux 1.1 ProCompare →FLUX.1 Schnell vs Claude Opus 4Compare →FLUX.1 Schnell vs GPT-o3Compare →FLUX.1 Schnell vs GPT-4oCompare →

Other Black Forest Labs Models

FLUX.1 Pro
N/A (image)
Flux 1.1 Pro

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Frequently Asked Questions

What is FLUX.1 Schnell?▾
FLUX.1 Schnell, developed by Black Forest Labs, is an open-source image generation model with 12 billion parameters optimized for fast generation speed. The German word 'schnell' (fast) reflects its design priority: producing quality images in fewer inference steps than standard diffusion models. The model targets prototyping, development, and applications where generation speed outweighs maximum image quality. Free and fully open-source under the Apache 2.0 license, it can be self-hosted, fine-tuned, and integrated into custom applications without cost. FLUX.1 Schnell runs on consumer GPUs and delivers results in seconds. It has become popular in the open-source community as a fast alternative to the proprietary FLUX.1 Pro. The model demonstrates Black Forest Labs' strategy of offering both free open-source and premium commercial models across different quality-speed tradeoff points.
How much does FLUX.1 Schnell cost?▾
Black Forest Labs charges Free (open) per 1M input tokens for FLUX.1 Schnell, with output at Free (open). Competitive with other models in its tier.
What is FLUX.1 Schnell's context window?▾
FLUX.1 Schnell supports up to N/A (image) tokens per request. A larger context window allows the model to reason over longer inputs, which matters for document analysis, code review, and multi-turn conversations.
Is FLUX.1 Schnell open source?▾
Yes — Black Forest Labs released FLUX.1 Schnell as open source. That means you're free to deploy it however you want: cloud, on-prem, edge. No API lock-in.
What is FLUX.1 Schnell best for?▾
Black Forest Labs positions FLUX.1 Schnell for: Fast image generation, prototyping, development. Real-world performance will depend on your specific prompts and data, but these are the intended strengths.