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FLUX Image Generation
API that can handle
your scale

FLUX is a state-of-the-art image model by Black Forest Labs.
At fal you will find the fastest and most reliable FLUX APIs for high-fidelity, accurate image generation.

DocumentationTry it now

Why choose fal as your FLUX API Provider?

  1. Fast

    fal provides the fastest and most reliable FLUX APIs for high-fidelity, accurate image generation.

  2. Cheap

    Being fast and reliable doesn't mean expensive. fal provides the affordable API for you to use with no hidden costs.

  3. Reliable

    fal ensures your images will be generated, no matter the load.

  4. Scalable

    fal provides scalable APIs that allow you to generate thousands of images per second.

  5. Easy to use

    fal provides easy-to-use APIs that allow you to generate images with just a few lines of code, with first-class support for Python, JavaScript, Swift and more.

Fast. Cheap. Reliable.
Choose 3.

FLUX models

FLUX is offered in a variety of different endpoints, each with its own unique capabilities and use cases. Black Forest Labs also builds video: see FLUX 3, or generate FLUX 3 video free, five drafts a day.

Flux 3 ImageFLUX 3 Image Edit from Black Forest Labs makes precise local edits without changing the rest of the image, and combines up to 10 references into one balanced, well-composed result.
image-to-image
flux-3-image
black-forest-labs
multi-reference
FLUX.3 Klein Image EditingEdits and composes images from text instructions and up to ten references with FLUX.3 Klein, with optional bounding-box controls for object placement and transformation.
image-to-image
image editing
image to image
reference images
typography
graphic design
flux
FLUX 2 Pro EditText-to-image generation with FLUX.2 [pro] from Black Forest Labs. Optimized for maximum quality, exceptional photorealism and artistic images.
image-to-image
FLUX 2 EditImage-to-image editing with FLUX.2 [dev] from Black Forest Labs. Precise modifications using natural language descriptions and hex color control.
image-to-image
FLUX.2 [klein] 9BImage-to-image editing with FLUX.2 [klein] 9B from Black Forest Labs. Precise modifications using natural language descriptions and hex color control.
image-to-image
FLUX 2 Pro OutpaintOutpainting generation with FLUX.2 [pro] from Black Forest Labs. Optimized for maximum quality, exceptional photorealism and artistic images.
image-to-image
image-to-image
outpaint
outpainting
FLUX 2 Turbo EditImage-to-image editing with FLUX.2 [dev] from Black Forest Labs. Precise modifications using natural language descriptions and hex color control—all at turbo speed.
image-to-image
FLUX1.1 [pro] ultra ReduxFLUX1.1 [pro] ultra Redux is a high-performance endpoint for the FLUX1.1 [pro] model that enables rapid transformation of existing images, delivering high-quality style transfers and image modifications with the core FLUX capabilities.
image-to-image
style transfer
high-res
FLUX1.1 [pro] ReduxFLUX1.1 [pro] Redux is a high-performance endpoint for the FLUX1.1 [pro] model that enables rapid transformation of existing images, delivering high-quality style transfers and image modifications with the core FLUX capabilities.
image-to-image
style transfer
FLUX 2 Flash EditImage-to-image editing with FLUX.2 [dev] from Black Forest Labs. Precise modifications using natural language descriptions and hex color control—in a flash.
image-to-image
FLUX.2 [klein] 4BImage-to-image editing with FLUX.2 [klein] 4B from Black Forest Labs. Precise modifications using natural language descriptions and hex color control.
image-to-image
Flux 2 MaxFLUX.2 [max] delivers state-of-the-art image generation and advanced image editing with exceptional realism, precision, and consistency.
image-to-image
flux2
image-editing
high-quality
FLUX.1 Kontext [pro]FLUX.1 Kontext [pro] handles both text and reference images as inputs, seamlessly enabling targeted, local edits and complex transformations of entire scenes.
image-to-image
FLUX.1 [pro] FillFLUX.1 [pro] Fill is a high-performance endpoint for the FLUX.1 [pro] model that enables rapid transformation of existing images, delivering high-quality style transfers and image modifications with the core FLUX capabilities.
image-to-image
editing
FLUX.1 Kontext [max]FLUX.1 Kontext [max] is a model with greatly improved prompt adherence and typography generation meet premium consistency for editing without compromise on speed.
image-to-image
PuLID FluxAn endpoint for personalized image generation using Flux as per given description.
image-to-image
personalization
style transfer
FLUX.1 [dev]FLUX.1 Image-to-Image is a high-performance endpoint for the FLUX.1 [dev] model that enables rapid transformation of existing images, delivering high-quality style transfers and image modifications with the core FLUX capabilities.
image-to-image
style transfer
FLUX.1 Kontext [dev]Frontier image editing model.
image-to-image
Flux Pro EraseLatest object erasing model from Black Forest Labs. Remove undesired objects, texts from images.
image-to-image
utility
editing
Flux 2 FlexImage editing with FLUX.2 [flex] from Black Forest Labs. Supports multi-reference editing with customizable inference steps and enhanced text rendering.
image-to-image

Articles about FLUX

Training FLUX Style LoRA on fal

Training FLUX Style LoRA on fal

FLUX has taken over the image generation space, but getting exactly the style you want can be difficult. This where style LoRAs can help. Training a style LoRA on fal is easy, but there are some tips and tricks for getting the best results.

Oct 14, 2024
Announcing FLUX1.1 [pro] by BFL and FLUX [dev] speed improvements

Announcing FLUX1.1 [pro] by BFL and FLUX [dev] speed improvements

The FLUX1.1 [pro] model, codenamed "blueberry," was introduced in the Artificial Analysis image arena (https://artificialanalysis.ai/text-to-image/arena) last week. It currently boasts the highest overall Elo score among all image models, while at the same time being one of the fastest.

Oct 3, 2024
Announcing FLUX by Black Forest Labs: The Next Leap in Text-to-Image Models

Announcing FLUX by Black Forest Labs: The Next Leap in Text-to-Image Models

FLUX, the largest SOTA open source text-to-image model to date, developed by Black Forest Labs — the original team behind Stable Diffusion is now available on fal. FLUX pushes the boundaries of creativity and performance with an impressive 12B parameters, delivering aesthetics reminiscent of Midjourney.

Aug 1, 2024

FLUX prompt examples

Examples are generated using the FLUX models. You can customize them by clicking on the "Customize it" button.

Change the cat's color to white.

Change the cat's color to white.

num_inference_steps: 50
guidance_scale: 3.5
Customize it
generated withfal-ai/flux-pro/kontext/max
replace ‘joy’ by ‘fal"

replace ‘joy’ by ‘fal"

num_inference_steps: 28
guidance_scale: 3.5
seed: 123456
Customize it
generated withfal-ai/flux-kontext/dev
orange alien

orange alien

num_inference_steps: 40
guidance_scale: 4.5
seed: 1234
image_size: 1024x768
Customize it
generated withfal-ai/flux/dev/image-to-image
replace ‘joy’ by ‘fal"

replace ‘joy’ by ‘fal"

num_inference_steps: 50
guidance_scale: 3.5
seed: 12345
Customize it
generated withfal-ai/flux-pro/kontext
Edit the poster in the first image. Keep the poster layout, the glass arch, the sphere and all event details exactly as they are. Replace only the large title "FORM & FEELING" with "COLOR & CURIOSITY" in the same expressive high-contrast serif style. Replace only the script subtitle "New ways of seeing" with "A new way to imagine". Recolor the large title in emerald and coral. All remaining printed words stay unchanged and clearly readable. The result is the same polished flat exhibition poster with the two specified text changes, exact spelling and no additional text. also put <cat>

Edit the poster in the first image. Keep the poster layout, the glass arch, the sphere and all event details exactly as they are. Replace only the large title "FORM & FEELING" with "COLOR & CURIOSITY" in the same expressive high-contrast serif style. Replace only the script subtitle "New ways of seeing" with "A new way to imagine". Recolor the large title in emerald and coral. All remaining printed words stay unchanged and clearly readable. The result is the same polished flat exhibition poster with the two specified text changes, exact spelling and no additional text. also put <cat>

num_inference_steps: 24
seed: 20261019
image_size: 1024x1360
Customize it
generated withblackforestlabs/flux-3/klein/edit-image
Change the car color to green

Change the car color to green

num_inference_steps: 50
guidance_scale: 3.5
Customize it
generated withfal-ai/flux-pro/kontext/max
Change the car color to red.

Change the car color to red.

num_inference_steps: 28
guidance_scale: 3.5
seed: 12345
Customize it
generated withfal-ai/flux-kontext/dev
Convert to pencil sketch with natural graphite lines, cross-hatching, and visible paper texture

Convert to pencil sketch with natural graphite lines, cross-hatching, and visible paper texture

num_inference_steps: 28
guidance_scale: 3.5
seed: 12345
Customize it
generated withfal-ai/flux-kontext/dev
It's now snowing, everything is covered in snow

It's now snowing, everything is covered in snow

num_inference_steps: 50
guidance_scale: 3.5
seed: 12345
Customize it
generated withfal-ai/flux-pro/kontext
It's now snowing, everything is covered in snow

It's now snowing, everything is covered in snow

num_inference_steps: 28
guidance_scale: 3.5
seed: 123456
Customize it
generated withfal-ai/flux-kontext/dev
Restyle to Claymation style

Restyle to Claymation style

num_inference_steps: 50
guidance_scale: 3.5
Customize it
generated withfal-ai/flux-pro/kontext/max