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  2. Text to Image
  3. Flux Dev

Flux Dev: Photorealistic AI Image Generator

Flux Dev is a 12-billion parameter text-to-image model that turns written descriptions into detailed, high-resolution images. It handles both text-to-image generation and image-to-image editing, where you start from an existing photo and redirect it using a prompt. The model supports 11 aspect ratios, from square 1:1 to ultra-wide 21:9, letting you generate images that fit the exact canvas you need without manual cropping. You can switch between a fast mode for quicker results and a standard mode for maximum fidelity, and export in WebP, JPG, or PNG. A seed parameter lets you lock in a result and iterate on small changes from there. It fits naturally into content creation workflows, product photography, and concept work where you need real images on demand. Open it on Picasso IA, write your prompt, set your parameters, and download the result in seconds.

Official

Black Forest Labs

27.17m runs

Flux Dev

2024-07-29

Commercial Use

Flux Dev: Photorealistic AI Image Generator

Table of contents

  • Overview
  • How It Works
  • Frequently Asked Questions
  • Credit Cost
  • Features
  • Use Cases
  • Examples
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Overview

Flux Dev is a text-to-image model with 12 billion parameters, designed to produce detailed, high-resolution images from written descriptions. You describe what you want, set the aspect ratio and output format, and receive a finished image in seconds. On Picasso IA, the model runs entirely in your browser with no local software required. It also supports image-to-image editing: upload an existing photo and use a text prompt to reshape it, adjusting how much of the original you want to preserve with the prompt strength slider.

How It Works

  • Write a text prompt that describes your subject, setting, lighting, and any visual details you want in the output.
  • Optionally upload a reference image to start from an existing photo; set the prompt strength to control how much of the original carries through.
  • Choose from 11 aspect ratios (1:1, 16:9, 9:16, 21:9, 3:2, and others) to match the platform or canvas you are designing for.
  • Set your output format (WebP, JPG, or PNG), adjust quality if file size matters, and optionally fix a seed to make the result reproducible.
  • Hit generate and download the image when it is ready.

Frequently Asked Questions

Do I need programming skills or technical knowledge to use this? No, just open Flux Dev on Picasso IA, adjust the settings you want, and hit generate. Everything runs through a visual interface with no coding involved.

Is it free to try? Yes, you can run Flux Dev without paying upfront or creating an account first. Open the model page and start generating right away.

How long does it take to get results? With the fast mode on, most 1-megapixel images generate in under 10 seconds. Disabling fast mode for higher fidelity takes longer, with generation time scaling based on the number of inference steps you choose.

What output formats are supported? You can save your image as WebP, JPG, or PNG. For JPG and WebP, you can set the quality from 0 to 100 to balance file size against sharpness. PNG exports at full quality with no compression artifacts.

Can I reproduce the same image again? Yes. Enter a fixed seed before generating, then reuse that seed with the same prompt to get the same result. This makes it straightforward to iterate on small prompt changes without losing an output you liked.

How many times can I run the model? There is no hard cap on generations. Run as many as you need to get the result right.

Where can I use the outputs? Downloaded images are clean files with no watermarks. You can use them in presentations, websites, social posts, product listings, or any other project.

Credit Cost

Each generation consumes 1 credit

1 credit

or 5 credits for 5 generations

Features

Everything this model can do for you

12B parameter model

Generates sharp, detailed images from text prompts at 1 megapixel resolution.

Img2img mode

Upload a reference photo and describe changes to get a modified version of your original.

11 aspect ratios

Choose from 1:1, 16:9, 9:16, 3:2, 21:9, and more to match your target canvas size.

Fast generation mode

Run a speed-optimized version of the model to reduce wait time on each generation.

Flexible output formats

Save your image as WebP, JPG, or PNG at any quality level from 0 to 100.

Seed control

Fix the seed to reproduce a result exactly, or leave it random for fresh outputs each run.

Adjustable inference steps

Set between 28 and 50 denoising steps to balance image quality against generation speed.

Optional safety checker for content control

Use Cases

Generate product mockups on a clean background by describing the item, material, and lighting in a text prompt

Create a series of concept illustrations for a presentation by entering different scene descriptions and selecting the right aspect ratio

Edit an existing photo into a new visual style using img2img mode: upload the original and describe how you want it changed

Produce portrait images in 4:5 or 9:16 format for social media posts by setting the aspect ratio before generation

Iterate on a character design by fixing the seed and tweaking the prompt until the result matches your vision

Generate background art for a website banner in 16:9 or 21:9 by writing a scene description and selecting the widescreen ratio

Build a set of consistent brand visuals by reusing the same seed across slight prompt variations in a batch run

Rapidly iterating on branding and visual identities

Examples

1:1
webp
1.8s
Go Fast: Yes
Guidance: 3.5
Megapixels: 1
Num Outputs: 1
Output Quality: 80
Prompt Strength: 0.8
Num Inference Steps: 28

black forest gateau cake spelling out the words "FLUX DEV", tasty, food photography, dynamic shot

1:1
webp
3.1s
Go Fast: Yes
Guidance: 3.5
Num Outputs: 1
Output Quality: 80
Prompt Strength: 0.8
Num Inference Steps: 28

Three magical wizards standing on a yellow table, each holding a sign. On the left, a wizard in black robes holds a sign that says ‘AI’; in the middle, a witch in red robes holds a sign that says ‘is’; and on the right, a wizard in blue robes holds a sign that says ‘cool’

1:1
webp
5.3s
Go Fast: Yes
Guidance: 3.5
Num Outputs: 1
Output Quality: 80
Prompt Strength: 0.8
Num Inference Steps: 28

a cat holding a sign that says hello world

1:1
webp
17536
4.8s
Go Fast: Yes
Guidance: 3.5
Num Outputs: 1
Output Quality: 80
Prompt Strength: 0.8
Num Inference Steps: 28

womens street skateboarding final in Paris Olympics 2024

1:1
webp
3.2s
Go Fast: Yes
Guidance: 3.5
Num Outputs: 1
Output Quality: 80
Prompt Strength: 0.8
Num Inference Steps: 28

a tiny astronaut hatching from an egg on the moon

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