01
flux-dev
Text-to-image generation and single-image editing with size, output count, and output format controls.
flux-dev
Text to Image
Image to Image
Model:
Flux Dev API supports text-to-image generation and single-image editing with output-size based pricing.
Input
Added 0/1
Drop files here, paste files, or add a URL. image/jpeg,image/png,image/webp · 10 MiB
Output
Example Output
This is sample data. Generate a new result to see real output.
Task ID:exampleCreated:2026-06-26T00:00:00
Status:finishedProgress:100%
Examples
Pricing details
Transparent pricing with no hidden fees. Pay as you go.
flux-devOutput image
PoYo price
$0.020
4 credits
Official price
$0.025
Official
You save
20%
| Model | Spec | PoYo price | Official price | You save |
|---|---|---|---|---|
| flux-dev | Output image | $0.020 4 credits per megapixel | $0.025 Official | 20% |
* Actual fees are based on the final output.
Introduction
Complete guide to using Flux Dev API on PoYo
Flux Dev API on PoYo
Flux Dev API gives developers a practical image generation model for prompt-based creation and single-image editing. Use one PoYo model ID for text-to-image when no image is provided, or include one image URL to guide an image-to-image edit.
Available Flux Dev API Model on PoYo
Key Features of Flux Dev API
Flux Dev is suited for controllable image creation, product concepts, visual exploration, and compact editing workflows.
01
Prompt-First Image Generation
Generate visual concepts directly from text prompts with selectable image sizes and output formats. Flux Dev works well for product shots, concept frames, thumbnails, and campaign ideation.
- Create images from text prompts
- Choose square, portrait, or landscape sizes
- Return PNG or JPEG files
02
Single-Image Editing
Include one source image URL when you want to guide an edit, variation, or restyle. The prompt describes the target transformation while the source image keeps the workflow grounded.
- Use one input image for image-to-image tasks
- Describe the desired transformation in the prompt
- Keep the public input surface simple
03
Output-Size Based Billing
PoYo estimates cost before submission from the requested output size and output count, then aligns final billing to the generated output image size when the task completes.
- Pricing scales with output image size
- Supports multiple outputs per request
- Unified submit and status endpoints
Who Can Benefit from Flux Dev API?
01
E-Commerce Teams
Create product concepts, listing visuals, and catalog image variations from concise prompts.
02
Creative Studios
Generate art direction options and edit a single source image for fast visual exploration.
03
Marketing Teams
Produce campaign concepts, social visuals, and thumbnail directions with predictable output-size pricing.
04
Developers
Integrate image generation and editing through PoYo's unified asynchronous API workflow.
Flux Dev vs Flux Schnell
Use Flux Dev when you need image-to-image support or a stronger general-purpose generation path. Use Flux Schnell when speed and lower-cost drafts are the priority.
| Feature | Flux Dev | Flux Schnell |
|---|---|---|
| Best For | General image generation and single-image editing | Fast text-to-image drafts |
| Image Input | One source image supported | Prompt-only |
| Billing Basis | Output image size and count | Output image size and count |
| PoYo API Model ID | flux-dev | flux-schnell |
Capabilities reflect the PoYo API integration.
How to Use Flux Dev API on PoYo
Step 1: Create an API key
Sign in to PoYo and create an API key for authenticated requests.
Create API Key
Step 2: Prepare your input
Send a prompt for text-to-image generation. To edit an existing image, include one image URL in input.image_urls.
Step 3: Submit and poll
Call the submit endpoint, store the returned task ID, then poll the status endpoint or use a callback URL for completion updates.
View Documentation
Flux Dev API Pricing on PoYo
Flux Dev uses output-size based pricing on PoYo. Cost scales with the generated image size and output image count.
No subscription is required. Pay only for the image generation and editing tasks you submit.
Frequently Asked Questions about Flux Dev API
What is Flux Dev API?
Flux Dev API is an image generation and editing model available through PoYo for prompt-based image creation and single-image editing.
Can Flux Dev edit existing images?
Yes. Include one image URL in input.image_urls and describe the desired edit in the prompt.
How many input images are supported?
Flux Dev supports one input image for image-to-image tasks on PoYo.
How is billing calculated?
Billing is based on generated output image size and output image count.
Which output formats are supported?
The PoYo integration supports PNG and JPEG output formats.
Why Use PoYo for Flux Dev API Access
01
Fast API Access
Start from one PoYo API key and use the same async submit and status flow as other image models.
02
Generation and Editing
Use one public model ID for prompt-only generation or single-image guided editing.
03
Output-Size Pricing
Estimate costs from output size and image count before sending a request.
04
Webhook-Ready Delivery
Poll task status or receive callback updates when generated images are finished.