Flux 1.1

Flux 1.1

Flux 1.1 Overview

Flux 1.1 Pro is a text-to-image generation model developed by the German company Black Forest Labs. Former members of the Stable Diffusion team worked on the project. The model is based on a flow transformer architecture with 12 billion parameters, allowing it to create detailed images with high accuracy in following the text prompt. One of Flux 1.1’s key features is its ability to correctly embed readable text inside images. At the time of release, the model took first place in the Artificial Analysis Image Arena ranking, outperforming many competitors in generation quality.

Flux 1.1 Specifications

Characteristic	Value
Type	AI image generation model
Category	Design assistants, Graphic design tools, Design generators, AI website generators, Digital art generators
Developer	Black Forest Labs (Germany)
Architecture	Flow transformer with 12 billion parameters
Free tier	Available (FLUX.1 [schnell], FLUX.1 [dev] for non-commercial use)
API cost (Pro)	from ~$0.04–0.06 per image
Subscription via platforms	from ~$8–15 / month
Enterprise API	by request
Publication date on site	April 27, 2026
Monthly visits	388.9K

Who Is Flux 1.1 For?

Designers and Illustrators

Flux 1.1 Pro is a useful tool for professional designers who need to quickly produce photorealistic images. Its high prompt adherence allows them to achieve the desired result with minimal iterations, saving time on commercial projects.

Developers

The model offers open versions with weights for local deployment and fine-tuning, as well as an API for integration into applications. Developers can embed image generation into their products, using LoRA adapters to fine-tune the style for specific tasks.

Marketers

The ability to generate images with readable text inside makes Flux 1.1 suitable for creating ad banners, social media posts, and other marketing materials without additional processing in graphic editors.

How to Use Flux 1.1

Through Aggregator Platforms

The easiest way to get started is to use platforms that have already integrated Flux 1.1. Services such as Leonardo AI, Tensor.Art, Civitai, and fal.ai provide access to the model through a web interface. Usually, after registration, free credits are issued — enough to test the capabilities.

Through the API

Developers can connect Flux 1.1 Pro via API. This allows them to integrate image generation directly into their own applications, websites, or workflows. The cost is $0.04 to $0.06 per image, which is suitable for projects with moderate generation volumes.

Local Deployment

The free versions FLUX.1 [schnell] and FLUX.1 [dev] are available for local deployment via Hugging Face. The [schnell] version can be used directly in a browser without registration. Running it on your own hardware requires a graphics card with at least 12 GB of video memory.

Key Features of Flux 1.1

Photorealistic Image Generation

The model creates images that are hard to distinguish from real photographs. Thanks to its 12-billion-parameter architecture, it achieves high detail and accurate rendering of textures, lighting, and shapes. Prompts are processed with minimal deviation from the user’s request.

Ultra Version

For tasks that require maximum quality, an Ultra version is available. It supports resolutions up to 2K (4 megapixels) without visible artifacts, opening up possibilities for printing and large-format use.

Text Embedding in Images

Flux 1.1 can correctly place readable text inside generated images. This eliminates the need to manually add captions in a graphic editor after generation. The feature is in demand when creating advertising materials, banners, and posters.

LoRA Adapter Support

The model is compatible with LoRA adapters, which allow fine-tuning the generation style. This is convenient for creating a series of works in a single visual concept or adapting the model to a specific domain without full retraining.

Flux 1.1 Advantages

Leading Quality

At the time of the announcement, Flux 1.1 Pro ranked first in the Artificial Analysis Image Arena, surpassing competitors across a combination of parameters. The model demonstrates one of the best records in the industry for photorealism and prompt adherence.

Prompt Accuracy

Flux 1.1’s main feature is its ability to follow a text description almost literally. Users get exactly what they ask for, without unexpected distortions or extra details — which is critical for commercial and technical tasks.

Open Versions

Unlike many proprietary solutions, Black Forest Labs has released open versions of the model, FLUX.1 [dev] and [schnell], with publicly available weights. Developers can download them for free, run them locally, and fine-tune them for their needs, expanding the range of possible applications.

Availability on Many Platforms

The model is integrated into dozens of popular services, including Leonardo AI, Civitai, Tensor.Art, and others. This allows users to choose the most convenient interface and payment model.

Flux 1.1 Drawbacks

No Single Official Service

Black Forest Labs does not have its own service with a user-friendly interface for the average user. Users have to rely on third-party aggregator platforms, which can be inconvenient for those accustomed to a single workspace.

Release of a New Version

After the Flux 1.1 announcement, the company released an updated version, Flux 2. This means the previous model is gradually becoming outdated, although it remains in demand.

Cost at High Volumes

API rates starting at $0.04 per image can lead to significant expenses for large batches of generations. Organizations with high monthly volumes will need an Enterprise agreement.

What Tasks Does Flux 1.1 Solve?

Product Photography for Online Stores

The model can generate high-quality product photos without setting up a professional photoshoot. This saves budget and time, especially when working with large catalogs.

Application Integration via API

Thanks to the API, developers can embed personalized image generation into their products — from mobile apps to web services. This opens up opportunities for dynamic content.

Creating Series of Works in a Unified Style

With LoRA adapters, the model can be fine-tuned to generate images in a consistent style. This is suitable for serial projects, brand campaigns, and illustrated content.

Ad Banners with Text

Flux 1.1 allows creating ad layouts with readable captions right at the generation stage. This reduces post-processing time and simplifies creative production.

Flux 1.1 Pricing

Free Versions

Two versions of the model are available for free. FLUX.1 [schnell] is distributed under the Apache 2.0 license and can be used without restrictions, including commercial projects. FLUX.1 [dev] is provided free of charge, but only for non-commercial use.

Paid Plans

The commercial version, Flux 1.1 Pro, is available via API at a price of $0.04 to $0.06 per generated image. Through integrated platforms, you can subscribe for $8 to $15 per month. Corporate clients have an Enterprise plan with customized terms.

Flux 1.1 Terms of Use

Commercial Use

The [pro] version is allowed for commercial use when paid via API or by agreement with Black Forest Labs. The [dev] version is prohibited for commercial projects. The [schnell] version is fully open under the Apache 2.0 license and can be used commercially without additional payments.

Non-Commercial Use

FLUX.1 [dev] is intended exclusively for non-commercial purposes. This version suits experiments, research, and personal projects, but not for earning money.

Flux 1.1 Availability

The model is available through numerous web platforms and API services. Users can choose an interface to their liking — from Leonardo AI to Tensor.Art. The free [schnell] version runs directly in the browser without registration.

How Flux 1.1 Differs from Alternatives

Flux 1.1 vs Midjourney

The main difference is in the generation approach. Flux 1.1 wins on prompt adherence, photorealism, and the ability to embed readable text. Midjourney, in turn, creates more stylized and artistically expressive images. For commercial and technical tasks, Flux is often chosen; for art projects, Midjourney.

Flux 1.1 vs Stable Diffusion

Flux 1.1 differs from Stable Diffusion in higher detail and greater prompt accuracy. Both models have open versions, making them accessible to developers. Flux 1.1 is considered a more modern solution thanks to its flow transformer architecture and larger number of parameters.

Flux 1.1 vs Leonardo.ai

Leonardo.ai is one of the platforms where Flux 1.1 is available. Users can compare results produced by Leonardo’s own model and Flux, choosing the most suitable option for their particular task.

Conclusion

Flux 1.1 Pro is a benchmark image generation model, especially strong in prompt adherence, detail, and text embedding. Despite the release of a newer version, Flux 2, it remains widely in demand and is available through many platforms. Thanks to open versions for developers and flexible licensing terms, the model suits both commercial projects and research or creative tasks.