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Flux 2 Flex

Text-to-image generation with FLUX.2 [flex] from Black Forest Labs. Features adjustable inference steps and guidance scale for fine-tuned control. Enhanced typography and text rendering capabilities.

  • Text to image
Create with Flux 2 Flex
Preview for Flux 2 Flex

Catalog preview for Flux 2 Flex. Review your own result before publishing.

A starting point.

Describe the image or edit you want and upload any required source images.

Before you publish.

Inspect the full-size output and compare details and subject appearance with your source.

Review the quote before running. A failed generation releases its reserved credits. Download the results you want to keep; stored media is retained for 30 days.

How credits work · Use the API · Content guidelines

Settings and model questionsCheck the available settings and guidance when preparing your input.

Inputs and settings

Choose an image-size preset or enter custom dimensions within the provider limits. The quote accounts for the selected output size.

Inputs, all modes and APIModel IDs, current input limits and the API generation workflow.

Supported inputs

These fields come from the current studio form for flux-2-flex. Other modes may require different inputs.

Input types, requirements and limits for flux-2-flex
InputTypeRequirementOptions and limits
promptTextRequired—
enable_safety_checkerOn/offOptional—
guidance_scaleNumberOptional≥ 1.5 · ≤ 10
num_inference_stepsWhole numberOptional≥ 2 · ≤ 50
output_formatTextOptionaljpeg, png
safety_toleranceTextOptional—
seedWhole numberOptional—

Check the full model schema for all options and cross-field rules. Request a quote for your selected settings before generating.

Use Flux 2 Flex through the API.

Start with this model ID for the endpoint featured on this page:

flux-2-flex

Input requirements belong to this model ID. Check a different mode’s schema separately when switching modes.

Check the current model schema for supported inputs and options. Other tasks may use different model IDs.

From quote to result.

Request a credit quote for your input and settings before submitting a generation. A sample output or the price of another model is not a quote for your request.

Follow the generation workflow, then poll the job for its status and result. The API and studio use the same balance.