Flux 2 Pro: High-Fidelity Multi-Reference Image Editing on playground and API | RunComfy

blackforestlabs/flux-2/pro/edit

Transform and refine images with natural language control using Flux 2 Pro, delivering 4MP photorealistic visuals, precise color handling, and professional-grade editing speed and detail.

Image 1
List of URLs of input images for editing.
The size of the generated image. If 'auto', the size will be determined by the model. For custom sizes, pass an object with width and height, such as {"width": 1280, "height": 720}.
The format of the generated image.
Idle
The rate is $0.03 per image.

Introduction to Flux 2 Pro Image Editor

Black Forest Labs' Flux.2 Pro generates and edits high-resolution images at $0.03 per image, delivering up to ~4K output in about 3-5 seconds for precise image-to-image editing. Trading manual masking and reshoots for Flux 2 Pro's multi-reference, layout-aware control that locks subjects and typography, eliminating complex selection and rework; built for e-commerce teams, design studios, and marketing workflows. For developers, Flux 2 Pro on RunComfy can be used both in the browser and via an HTTP API, so you don’t need to host or scale the model yourself.
Ideal for: Campaign-Ready Product Imagery | Rapid Layout Prototyping | Brand-Consistent Visual Refreshes

Examples of Flux 2 Pro Creations

Flux 2 Pro on X: Trends and Insights

Model Overview


  • Provider: Black Forest Labs
  • Task: image-to-image
  • Max Resolution/Duration: Up to ~4MP (≈4K); typical latency 3–5s
  • Summary: Flux 2 Pro is a professional image-to-image editing model that refines or transforms images with precise layout control, multi-reference alignment, and high-fidelity color and typography. It enables fast, consistent, brand-ready outputs from one or multiple inputs. Flux 2 Pro is built for technical artists who need reliable prompt adherence, subject consistency, and print-capable resolution.

Key Capabilities


Multi-reference alignment (up to 8 inputs)

  • Flux 2 Pro accepts up to eight reference images via API (9MP total) to guide style, subject identity, pose, or environment and performs edits via natural-language prompts.
  • The model blends references while preserving identity and layout logic, enabling consistent assets across campaigns, product lines, or storyboard sequences.

Pixel-accurate layout, color, and text control

  • Structured prompting supports clear scene/subject/style specifications, accurate hex color matching, and pose guidance through reference images.
  • Outputs demonstrate strong prompt fidelity with improved on-image text clarity, helping create posters, packaging, UI mockups, and typographic assets that read cleanly.

High-resolution, edit-focused workflow

  • Image-to-image outputs reach ~4MP with arbitrary aspect ratios and professional sharpness suitable for print and large digital placements.
  • A combined generate-or-edit API simplifies pipelines: teams can generate first-pass concepts and then apply targeted edits without switching endpoints, improving iteration speed.

Input Parameters


Core Prompts

ParameterTypeDefault/RangeDescription
promptstring""Text instructions describing the edit(s) to apply to the input image(s).
image_urlsarray of image URLs[]List of image URLs to edit. Multiple images allowed for multi-reference guidance.

Dimensions & Output

ParameterTypeDefault/RangeDescription
image_sizestring (preset or Custom)auto; presets: auto, square_hd, square, portrait_4_3, portrait_16_9, landscape_4_3, landscape_16_9, CustomSelect a size preset or choose Custom to provide explicit width/height.
output_formatstringjpeg; options: jpeg, pngOutput image format. Use PNG for lossless assets; JPEG for smaller files.

API Integration


Developers can integrate Flux 2 Pro via the RunComfy API using standard HTTP requests and JSON payloads. The same endpoint supports both generation and editing, making it easy to slot into existing pipelines and CI/CD workflows without custom wrappers.


Note: API Endpoint for Flux 2 Pro


Official resources and licensing


  • Official Docs (Image Editing): https://docs.bfl.ai/flux_2/flux2_image_editing
  • Prompting Guide: https://docs.bfl.ai/guides/prompting_guide_flux2
  • License: Proprietary/commercial license from Black Forest Labs. Commercial use is permitted per provider terms; enterprise or custom commercial use may require a separate agreement with the provider.

Explore Related Capabilities


If you need text-to-image generation (starting from prompts rather than input photos), use the Flux 2 Pro text to image endpoint without image_urls to generate from text only. For developers targeting scripted edits and generation in one pipeline, the combined generate-or-edit flow under flux-2-pro edit simplifies orchestration and reduces integration overhead.

Related Playgrounds

Frequently Asked Questions

What is Flux 2 Pro and what can it do with image-to-image editing?

Flux 2 Pro is a high-end generative model developed by Black Forest Labs that allows users to create and edit images through both text-to-image and image-to-image workflows. It’s designed for professionals needing precise control over color, style, and composition.

How is Flux 2 Pro different from earlier models when using image-to-image features?

Flux 2 Pro brings major improvements over previous versions — including support for up to 8 reference images (10 in the playground) and better photorealism for image-to-image generation. It also performs faster and follows prompts more intelligently than Flux 1.

Is Flux 2 Pro free to use for image-to-image generation?

Flux 2 Pro is accessible through the Runcomfy playground using a credit-based system. New users get free trial credits when they sign up, so you can test both text-to-image and image-to-image capabilities without immediate cost.

What kinds of outputs can I get from Flux 2 Pro using image-to-image mode?

Flux 2 Pro can produce high-quality images up to 4 megapixels in resolution, maintaining faithful color matching and realistic textures. Its image-to-image mode is ideal for refining or transforming visual inputs while preserving structure and style.

Who is Flux 2 Pro best suited for when using the image-to-image feature?

Flux 2 Pro is built for creative professionals and teams — such as those in design, marketing, branding, and e-commerce — who rely on image-to-image editing for keeping visual consistency across projects, products, or campaigns.

What file types and formats are supported by Flux 2 Pro during image-to-image editing?

Flux 2 Pro works seamlessly with common image formats like PNG and JPEG for both input and output. You can upload your source image for image-to-image editing and export results in high-resolution for print or digital use.

On which platforms can I access Flux 2 Pro for image-to-image generation?

Flux 2 Pro is available via browser through the Runcomfy playground and through an API for developers. Both the web interface and API support image-to-image capabilities, and the web app works well on mobile browsers.

Does Flux 2 Pro have limitations when performing image-to-image transformations?

While Flux 2 Pro is powerful, complex edits that require extreme perspective changes or very abstract transformations may need additional prompt tuning. Nonetheless, its image-to-image mode delivers reliable, consistent results for most use cases.

What makes Flux 2 Pro’s image-to-image models stand out from competitors?

Flux 2 Pro differentiates itself through faithful style transfer, support for multiple reference images, and precise color and lighting control. Its advanced latent flow matching architecture ensures image-to-image results rival those of other top-tier AI systems.

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