Flux 2 Dev
Flux 2 Dev is optimized for speed, delivering quality images quickly with support for up to 4 reference images — perfect for rapid prototyping and iterative workflows.
Overview
| Property | Value |
|---|---|
| Provider | Black Forest Labs |
| Cost | 50 credits |
| Modality | Image |
| Reference Images | Up to 4 |
| Prompt Required | Yes |
What It's Best For
- Fast generation — Quick results for time-sensitive work
- Rapid prototyping — Test ideas quickly
- Iterative refinement — Fast feedback loops
- Development workflows — Build and test pipelines
- Moderate reference needs — Up to 4 images
Inputs
Prompt (Required)
Describe the image you want to generate.
Connection Color: 🟡 Yellow
Input Images (Optional)
Up to 4 reference images for image-to-image generation.
Connection Color: 🟢 Green
Configuration
Aspect Ratio
Type: Select
Default: 1:1
Standard ratios plus "Match Input Image" and "Custom".
Width / Height (Custom)
Type: Slider
Range: 256 - 1440
Step: 32
Custom dimensions when aspect_ratio is "Custom".
Go Fast
Type: Toggle
Default: On
Enable additional optimizations for faster generation.
Seed
Type: Number
For reproducible results.
Output Format
Type: Select
Default: webp
webp, jpg, or png.
Output Quality
Type: Slider
Range: 0 - 100
Default: 80
Disable Safety Checker
Type: Toggle
Default: Off
Disable content filtering for generated images.
Output
Type: Image
Connection Color: 🟢 Green
Use Cases
Quick Mockups
Website hero image mockup, modern design, gradient background,
tech aesthetic, clean layout.
Rapid Iteration
Generate and refine quickly:
Logo concept: abstract geometric shape, blue tones,
professional, modern.
Development Testing
Perfect for testing image generation pipelines and workflows.
Concept Exploration
Character design sketch, fantasy warrior, armor details,
dynamic pose.
Tips for Best Results
- Keep "Go Fast" enabled — Significant speed improvement
- Use for drafts — Save premium models for finals
- Leverage seeds — Reproduce and iterate on good results
- Limit references to 4 — Model's sweet spot
- Lower resolution for speed — 1440px max is usually sufficient
Speed Comparison
| Model | Speed | Cost | Best For |
|---|---|---|---|
| Flux 2 Dev | ⚡⚡⚡ Fast | 50 credits | Rapid iteration |
| Flux 2 Flex | ⚡⚡ Medium | 20 credits | Value + quality |
| Flux 2 Pro | ⚡ Slower | 120 credits | Maximum quality |
When to Choose Flux 2 Dev
Choose Flux 2 Dev when:
- Speed is more important than maximum quality
- You're iterating on concepts
- You need quick turnaround
- 4 reference images are sufficient
Choose alternatives when:
- You need more reference images (Flux 2 Flex: 10)
- Maximum quality is required (Flux 2 Pro)
- Budget is very tight (Flux 2 Flex: 20 credits)
Related Models
- Flux 2 Flex — More references, lower cost
- Flux 2 Pro — Maximum quality
- Flux 1.1 Pro Ultra — Exceptional detail