black-forest-labs: flux-2-klein-4b-lora

Text-to-image generation with FLUX.2 [klein] 4B from Black Forest Labs and custom LoRA. Enhanced realism, crisper text generation, and native editing capabilities.

Compare models

flux-2-klein-4b-lora

Availableblack-forest-labsImageSync

Price: From $0.0105
Modalities: Image

Getting started

Create API key
Create a key in Console, then use it with every model on the platform.

Send your first request

Copy the example for your language and run it against the endpoint.

Image editingText to imageTokenLab endpoint

POST/v1/images/generations

curl -X POST "https://api.tokenlab.sh/v1/images/generations" \
  -H "Authorization: Bearer sk-xxx" \
  -H "Content-Type: application/json" \
  -d '{
  "operation": "image-to-image",
  "model": "flux-2-klein-4b-lora",
  "prompt": "A minimalist product photo of matte black headphones on a soft blue background.",
  "image_url": "https://example.com/source.png"
}'

Pricing

Official price is the model maker's public baseline. TokenLab price is what you pay for this model on TokenLab.

Image editing

Per request

Official price: $0.0105
Official: $0.0105
Discount: -

Text to image

Per request

Official price: $0.0105
Official: $0.0105
Discount: -

	Official pricePer request	OfficialPer request	Discount
Image editing	$0.0105	$0.0105	-
Text to image	$0.0105	$0.0105	-

Usage & activity

Success rate is the share of requests that completed. Latency is how long a full response takes; P95 means 95% of requests finished within that time.

Usage & availability

Last 24 hours

No data yet

Model performance

Last updated Oct 1, 2026, 06:10 AM UTC

Metrics appear once privacy and data volume thresholds are met.

Data is based on aggregate user requests, excluding status checks.

Open in Console

Open FLUX.2 [klein] 4B LoRA in Console with a prompt ready to edit or send.

Help me create an image with flux-2-klein-4b-lora using image-edit at /v1/images/edits. Show the result, cost, and any limits I should know.

Use cases

Best for

Text to Image

Producing product imagery, illustrations, and design variations

Product visuals

Make campaign images, catalog scenes, and design directions from a few prompts.

Iterative editing

Create edits and variations from an existing image.

Creative testing

Compare prompt results, output counts, and response formats.

Side-by-side test

Compare response quality, latency, and price side by side.

Prompt examples

Generate a clean product shot of matte black headphones on a soft blue gradient.

Edit the source image into a premium ecommerce hero with natural shadows.

Give me three visual directions for a developer-tool launch banner.

FAQ

How much does FLUX.2 [klein] 4B LoRA cost?

On TokenLab, FLUX.2 [klein] 4B LoRA costs $0.0105 Per request. The pricing table above shows the full breakdown. Rates depend on the billing unit, specification, and usage. Compare matching conditions in the model's detailed pricing; a single rate does not determine the total cost.

What is FLUX.2 [klein] 4B LoRA best for?

FLUX.2 [klein] 4B LoRA supports Image Edit, Text to Image. You can open it directly in Create.

How do I test FLUX.2 [klein] 4B LoRA?

Open FLUX.2 [klein] 4B LoRA in Create. A sample for /v1/images/generations will be ready to try.

Which endpoint should FLUX.2 [klein] 4B LoRA use?

Use https://api.tokenlab.sh/v1/images/edits for FLUX.2 [klein] 4B LoRA. The request example below shows the matching code shape.

Can I test FLUX.2 [klein] 4B LoRA before integrating it?

Yes. Open Console starts a ready draft for FLUX.2 [klein] 4B LoRA and keeps your prompt after sign-in, so you don’t lose context.

Which operations does FLUX.2 [klein] 4B LoRA support?

FLUX.2 [klein] 4B LoRA supports Image editing, Text to image. Select an operation above to see its endpoint and request example.