Flux 2 Klein 4b Edit

Flux 2 Klein 4b Edit

Playground

FLUX.2 [klein] 4B Edit enables precise image-to-image editing with natural language instructions and multi-reference support. Ready-to-use REST inference API, best performance, no cold starts, affordable pricing.

Features

FLUX.2 Klein 4B Edit

FLUX.2 Klein 4B Edit is a lightweight yet powerful image editing model. Upload images and describe your edits in natural language — the model transforms styles, modifies content, and applies effects with fast generation and affordable pricing.

Why Choose This?

• Text-guided editing Describe edits in natural language — transform styles, modify content, apply effects, and more.

• Multi-image input Upload multiple reference images for context-aware editing.

• Flexible output sizing Optionally set output size, or leave empty to match input image dimensions.

• Prompt Enhancer Built-in tool to automatically improve your prompts for better results.

• Lightweight and fast 4B parameter model optimized for quick turnaround at the lowest cost.

Parameters

How to Use

1. Write your prompt — describe the edit you want (e.g., “Change image1 to the comic style”, “add sunset lighting”).
2. Upload images — add source images using ”+ Add Item” button.
3. Set size (optional) — specify output dimensions or leave empty to match input.
4. Set seed — use -1 for random, or specify a number for reproducibility.
5. Run — submit and download the edited image.

Pricing

Simple flat-rate pricing regardless of image size.

Best Use Cases

• Style Transfer — Transform images to comic, anime, painting, or other styles.
• Quick Edits — Fast, affordable edits for creative iteration.
• Batch Processing — Low cost enables large-scale image editing.
• Content Transformation — Change moods, lighting, or visual themes.
• Prototyping — Rapidly test editing ideas before using higher-tier models.

Pro Tips

• Be specific in your prompt — clearly describe what should change.
• Leave size empty to preserve original image dimensions.
• Use the same seed to compare different prompts on the same image.
• Reference images by number in prompts (e.g., “Change image1 to…”).

Notes

• If size is not specified, output matches input image dimensions.
• For best results, use high-quality source images.
• Need LoRA support? Try FLUX.2 Klein 4B Edit LoRA.

Related Models

• FLUX.2 Klein 4B Edit LoRA — Edit with LoRA support for custom styles.
• FLUX.2 Klein 9B Edit — Higher quality 9B version.
• FLUX.2 Klein 4B Text-to-Image — Text-to-image generation.

# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/wavespeed-ai/flux-2-klein-4b/edit" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
    "seed": -1,
    "enable_sync_mode": false,
    "enable_base64_output": false
}'

# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"