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Flux 2 Dev Free: High-Precision Image-to-Image Generation

blackforestlabs/flux-2/dev/edit

Transform existing images with high fidelity using the 32B parameter Flux 2 Dev model. Upload up to 3 reference images for precise editing, restyling, and detail refinement.

Image 1
The URLs of the images for editing. Maximum of 3 image URLs; if more are provided, only the first 3 will be used.
Guidance Scale is a measure of how close you want the model to stick to your prompt when generating the image.
The number of inference steps to perform during image generation.
Specifies the size of the image to generate. Choose a preset aspect ratio or use Custom to specify width and height between 512 and 2048 pixels.
The number of images to generate.
If set to true, the prompt will be expanded for better results.
Specifies the output image format.
Idle
The rate is $0.024 per image.

Introduction to Flux 2 Dev Image to Image

Flux 2 Dev Image to Image is a professional-grade visual transformation engine designed for precise editing and restyling. Unlike standard text-to-image tools that generate from scratch, this playground uses your uploaded images as the structural foundation, allowing you to apply complex edits, change styles, or refine details while preserving the original composition. Powered by the 32B parameter FLUX.2 architecture, it excels at understanding nuanced natural language instructions to modify existing visuals with photorealistic accuracy.

Flux 2 Dev on X: Updates and Insights

Key Capabilities

  • Reference-Based Transformation: Upload up to 3 source images to guide the generation. The model uses these inputs to maintain structural integrity, ensuring edits look natural rather than hallucinated.
  • Precision Editing: Change specific elements (e.g., "change his clothes to a suit") while keeping the rest of the image—like facial features, pose, and background—intact.
  • High-Fidelity Restyling: Apply new artistic styles, lighting conditions, or textures to an existing photo without losing the original subject's identity or layout.
  • Prompt Adherence Control: Use the Guidance Scale to dictate how strictly the model follows your text instructions versus the original image content.

How to use Flux 2 Dev Image to Image

  1. Upload References: Add your base image(s) to the image_urls list (Max 3). The first image typically serves as the main structural reference.
  2. Write Instruction: In the Prompt field, describe the change you want to make (e.g., "Make it look like a pencil sketch" or "Add a hat to the character").
  3. Tune Guidance:

- Low (1.5 - 2.5): Subtle changes, high fidelity to original image.

- Medium (3.0 - 5.0): Balanced editing, follows text prompt well.

- High (7.0+): Strong transformation, may deviate significantly from the original image structure.

  1. Set Steps: Default is 28. Increase to 40-50 for complex textures or realistic faces; decrease to 15-20 for faster, looser edits.

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Frequently Asked Questions

What is Flux 2 Dev and what does its image-to-image feature do?

Flux 2 Dev is a powerful 32-billion parameter open-weight generative model designed for image creation and editing. Its image-to-image feature allows users to modify existing pictures using prompts while preserving key parts of the composition.

How is Flux 2 Dev different from previous versions like FLUX.1 in terms of image-to-image performance?

Flux 2 Dev provides sharper textures, more realistic lighting, and finer detail fidelity compared to FLUX.1, making its image-to-image transformations noticeably higher in quality and accuracy.

Is Flux 2 Dev free to use, and how does pricing work for image-to-image generation?

Flux 2 Dev offers a free trial tier with complimentary credits for new users. After that, you can use a credit-based pricing model where each image-to-image or text-to-image task consumes credits proportional to the image size.

Who are the main users of Flux 2 Dev, and how might they benefit from its image-to-image capabilities?

Flux 2 Dev is ideal for designers, advertisers, game studios, and product photographers who require consistent visuals. The image-to-image feature helps them efficiently update or blend styles while keeping brand or visual coherence.

On what platforms can I access Flux 2 Dev and its image-to-image tools?

You can access Flux 2 Dev through the Runcomfy AI Playground on desktop or mobile browsers. The image-to-image editing tools work directly in the browser, with local or API usage options available for developers.

What technical inputs and outputs does Flux 2 Dev support for image-to-image creation?

Flux 2 Dev accepts existing images and textual prompts as inputs and can output edited visuals up to about 4 megapixels. The image-to-image process maintains structure while adding new elements or styles.

Are there any limitations when using Flux 2 Dev for image-to-image editing?

Flux 2 Dev performs best up to around 4 megapixels and may require optimization for extremely complex multi-reference setups. However, the model’s image-to-image guidance is still among the most stable available.

Can I run Flux 2 Dev locally for image-to-image workflows?

Yes, Flux 2 Dev can be run locally using its open weights or accessed remotely through APIs, making image-to-image experimentation flexible for both individual creators and enterprise users.

How does Flux 2 Dev maintain consistency when performing image-to-image tasks with multiple references?

Flux 2 Dev allows up to ten reference images per prompt. This feature ensures character or style consistency across related outputs, giving image-to-image edits a coherent and unified aesthetic.

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