How to use Flux for AI image generation

Using Flux takes nothing more than a prompt. Flux, from Black Forest Labs, is one of the most capable AI image models available, built for precise, controllable generation, from photorealistic detail to exact brand colors. The easiest way to use it is on Picsart, with no install and no API setup: open the Picsart AI Image Generator, pick a Flux model, describe what you want, and generate.

This guide covers what Flux is, how to choose a model, how to create your first image step by step, how to write prompts, how to edit with Flux, and the mistakes to avoid. By the end, you will be generating with Flux in under a minute.

What is Flux?

Flux is a family of AI image models from Black Forest Labs, designed for precise, controllable image generation. The latest generation, FLUX.2, is the current recommended version and comes in tiers so you can trade speed for quality per task. Across the family, Flux outputs up to 4MP, matches exact colors from hex codes, combines up to 8 reference images, and renders reliable in-image text. On Picsart, Flux runs inside the AI Image Generator and AI Playground alongside more than 130 other models.

The Flux 2 lineup: which model for which job

Flux is not one model but a family, and FLUX.2 splits into four tiers. Each is tuned for a different balance of speed and quality, so picking the right one saves both time and credits. Here is what each one is for:

• FLUX.2 klein is the fastest tier, built for real-time and high-volume generation. Use it for quick drafts, exploring lots of ideas, and any workflow where you need many images fast. It is the model to reach for when you are brainstorming a direction rather than finishing a piece.
• FLUX.2 pro is the production workhorse, delivering high quality at scale. It is the best default for most work: marketing visuals, product shots, social content, and anything you plan to publish. On Picsart, Flux 2 Pro is the tier most people should start with.
• FLUX.2 flex is tuned for typography and fine control. Use it when text and small details matter, such as posters, ad creatives, packaging, and layouts where letters have to be sharp and correctly placed.
• FLUX.2 max is the highest-quality tier, and it can ground a result in real-time information through search. Reach for it on hero images and final deliverables where quality has to be the best, or when a scene depends on current, real-world facts.

Here is the quick version:

A simple rule: draft with klein, produce with pro, design text with flex, and reach for max when quality has to be the best.

How to use Flux on Picsart, step by step

You can generate a Flux image in under a minute, with no account juggling or setup. Here is the full flow:

How to use Flux on Picsart, step by step

1. Open the AI Image Generator

Open the Picsart AI Image Generator or AI Playground.

Open the AI Image Generator

2. Select a Flux model

Select a Flux model, such as Flux 2 Pro.

3. Write your prompt

Type a prompt that describes the subject, style, and composition.

4. Set aspect ratio and references

Set the aspect ratio, and add reference images or exact colors if you need them.

5. Generate and refine

Generate, then compare the result and refine the prompt.

6. Edit or download

Edit the image in Picsart, or download it.

Everything runs on one credit balance, and it is free to try, so you can experiment before committing.

Generate your first Flux image: a worked example

The fastest way to learn Flux is to make something. Say you want a product shot. Start with a clear, descriptive prompt:

“A photorealistic product photo of a matte black perfume bottle on a marble surface, soft window light from the left, shallow depth of field, minimal background, 3:2.”

Pick Flux 2 Pro, set the aspect ratio to 3:2, and generate. Flux returns a clean, photoreal shot with believable reflections and lighting. From there, refine in small steps. Want the label a specific brand color? Add it by hex code, for example “the label is the color #C8A250.” Want a matching set? Add a reference image of the bottle so the shape stays consistent across new scenes. Each pass gets you closer without starting over.

How to write Flux prompts

Flux rewards specific, structured prompts. A few habits make a clear difference:

• Describe the whole shot, not just the subject: name the setting, the lighting, and the camera angle.
• Use exact hex codes when brand colors matter. Flux matches them precisely, so a prompt like “a poster using the colors #1B998B and #E84855” comes out on-brand rather than approximate.
• Add reference images to keep a character, product, or style consistent across a set, combining up to 8 sources.
• Use a structured prompt for repeatable results, spelling out subject, background, lighting, style, and composition.
• Write in detail. Flux follows instructions closely, so the more you specify, the more control you get.

How to edit images with Flux

Flux is not only for generating from scratch. You can edit an existing image by uploading it and describing the change in words, which is useful for adjusting a background, swapping a color, or restyling a scene while keeping the subject intact. For more control, use multiple references at once: combine up to 8 images to place a product into a new setting, build ad variants that keep the same face, or assemble a composite where every element stays consistent. On Picsart, a generated or edited result drops straight into the editor, so you can refine, layer, and export without switching tools.

What you can create with Flux

Flux is built for work where precision and realism matter. Common uses include:

• Photorealistic product and lifestyle shots that blend seamlessly with real photography, ideal for e-commerce and marketing.
• Brand visuals with exact, repeatable colors, matched to a palette by hex code.
• Posters, ad creatives, and infographics with clean, legible text.
• Multi-reference composites, such as ad variants that keep the same face or product across different scenes.
• Concept and mood boards, generated fast with klein and refined with pro.

Common Flux mistakes to avoid

A few habits trip people up when they start:

• Prompts that are too vague. “A nice product photo” leaves too much to chance. Name the subject, lighting, angle, and background.
• Describing colors in words when they need to be exact. “Teal” can drift; a hex code like #1B998B does not. Use codes for brand work.
• Skipping references for consistency. If a face or product must repeat across images, add it as a reference rather than re-describing it each time.
• Using the wrong tier. A fast draft model is not the right pick for a final hero image, and the top-quality tier is overkill for quick exploration. Match the tier to the task.

Tips for the best results

Start with a simple prompt, then refine it with reference images and exact colors once the composition is close. Generate a few options rather than one, since a small change in wording can shift the result. And because Flux sits next to other models in the AI Playground, you can run the same prompt through several image models and keep the strongest output.

Start creating with Flux on Picsart

Using Flux is as simple as writing a prompt, then refining with references, colors, and the right tier for the job. Open the Picsart AI Image Generator, pick a Flux model, and make your first image in under a minute.