FLUX.2 Flex generates and edits images with adjustable steps and guidance for fine control and typography.
Image link valid for 72 hours
FLUX.2 billing adds the output MP price to the reference-image MP price.
Output billing uses the 1MP, 2MP, 3MP, and 4MP tiers.
| Variant | Tier | GoldCurrent price | Platinum | Diamond | Official | Your savings |
|---|---|---|---|---|---|---|
flux-2-flex | 1MP | 0.4Credits(~$0.04) | 0.38Credits(~$0.038) | 0.36Credits(~$0.036) | 0.5Credits(~$0.05) | 20% |
| 2MP | 0.8Credits(~$0.08) | 0.76Credits(~$0.076) | 0.72Credits(~$0.072) | 1Credits(~$0.1) | 20% | |
| 3MP | 1.2Credits(~$0.12) | 1.14Credits(~$0.114) | 1.08Credits(~$0.108) | 1.5Credits(~$0.15) | 20% | |
| 4MP | 1.6Credits(~$0.16) | 1.52Credits(~$0.152) | 1.44Credits(~$0.144) | 2Credits(~$0.2) | 20% |
A single reference image uses its actual pixel tier, up to 4MP. With two or more images, each is billed at 1MP.
| Variant | Tier | GoldCurrent price | Platinum | Diamond | Official | Your savings |
|---|---|---|---|---|---|---|
flux-2-flex | 1MP | 0.4Credits(~$0.04) | 0.38Credits(~$0.038) | 0.36Credits(~$0.036) | 0.5Credits(~$0.05) | 20% |
| 2MP | 0.8Credits(~$0.08) | 0.76Credits(~$0.076) | 0.72Credits(~$0.072) | 1Credits(~$0.1) | 20% | |
| 3MP | 1.2Credits(~$0.12) | 1.14Credits(~$0.114) | 1.08Credits(~$0.108) | 1.5Credits(~$0.15) | 20% | |
| 4MP | 1.6Credits(~$0.16) | 1.52Credits(~$0.152) | 1.44Credits(~$0.144) | 2Credits(~$0.2) | 20% |
* Final charges follow the actual generation parameters.
Generate or edit images with FLUX.2 Flex. Its API accepts up to 8 reference images as public URLs or Base64, supports 1MP, 2MP, 3MP, and 4MP tiers, and can use exact dimensions up to 4 MP.
50K+
Active Users
99.9%
Uptime
2x
Faster
20%
1MP Output · Saving
Documented controls for image generation and editing with FLUX.2 Flex
Use FLUX.2 Flex for production image workflows, from design and marketing to editing and illustration.
Create a key, submit a generation task, and poll for its result.
Create your APIMart account and add sufficient balance before submitting FLUX.2 Flex tasks.
Create an API key in the dashboard and send it as a Bearer token.
POST to /v1/images/generations, then poll /v1/tasks/{task_id} until the task completes. Use the returned cost as the final charge.
See how professionals are transforming their work with Flux 2. These stories describe the FLUX.2 family, including Pro and Flex, and are not specific to this version.
“Flux 2 Pro delivers stunning photorealism—especially with multiple references. The Flux 2 lighting and textures feel incredibly lifelike for our product campaigns.”
Alex Chen
Creative Director at DesignWorks
“Flux 2's typography rendering is exceptional. Finally, a model that handles text in mockups cleanly without artifacts or blur.”
Sarah Mitchell
UI/UX Designer
“The Flux 2 multi-reference feature helped me keep character styles consistent across my entire illustration series. Game-changer!”
Marcus Weber
Freelance Illustrator
“Editing existing images with Flux 2's natural language is so intuitive. Just describe what you want changed and Flux 2 works remarkably well.”
Emma Rodriguez
Marketing Manager
“Flux 2 Flex's quality vs speed control is super helpful when iterating designs. Flux 2 saved us hours in the creative review process.”
James Liu
Brand Strategist
“The precise color control with hex codes in Flux 2 gives us exactly the brand colors we need. No more post-processing adjustments!”
Sophie Anderson
Art Director at AdVision
Answers based on the FLUX.2 Flex API behavior.
The FLUX.2 Flex API accepts up to 8 reference images as publicly accessible URLs or Base64 for editing, composition, and visual consistency.
Choose Pro for balanced speed, quality, and cost, Max when the highest output quality matters most, and Flex when you need adjustable steps, guidance, or stronger layout control.
No. These controls are exclusive to flux-2-flex: steps accepts 1–50 and guidance accepts 1.5–10. Pro and Max do not expose them.
Use 1MP, 2MP, 3MP, or 4MP with any of 9 ratios, or provide width and height of at least 64 px with a total output limit of 4 MP. Formats are PNG, JPEG, and WebP.
POST /v1/images/generations returns a task ID. Poll GET /v1/tasks/{task_id} until the task is completed or failed; each task returns one image.
The charge combines this model’s output MP tier or exact dimensions with the input MP tiers of reference images, using the live prices on this page. Use the completed task’s cost field as the source of truth. Failed tasks are automatically refunded in full.
Yes. Prices shown on this page are Gold member prices, already 20% off. Platinum and Diamond members save even more, up to 28%, and you only pay for successful requests.
Sign up for APIMart, open the API Keys page in your dashboard and create a new key. The same key calls the Black Forest Labs FLUX.2 Flex API and every other model on the platform, with pay-as-you-go billing and no subscription.
Yes. Flux 2 is a common way to write FLUX.2, Black Forest Labs' image family with Pro, Max and Flex variants. On APIMart, call the Flux 2 API by setting model to flux-2-flex. FLUX.1 Kontext (flux-kontext-pro and flux-kontext-max) is also available with the same API key.
You can reach us via the live chat in the bottom-right corner, email us at [email protected], or join our Discord community. Our team will get back to you as soon as possible.
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