Black Forest Labs Flux 3 Klein, text to image, 4K
Overview
Black Forest Labs Flux 3 Klein, text to image, 4K is an image-generation model from Black Forest Labs, available through the AI Generate API. You call it with the same Bearer token and the same create-task request as every other model in the catalog, so no provider SDK is needed. Price: $0.0455 per image, charged per use from your credit balance.
Use via API
curl https://aimarcusimage.eu/api/v1/jobs/createTask \
-H "Authorization: Bearer sk-aig-..." \
-H "Content-Type: application/json" \
-d '{
"model": "black-forest-labs-black-forest-labs-flux-3-klein-text-to-image-4k",
"input": {
"prompt": "a red fox sitting in snow, golden hour, photographic"
}
}'
Async jobs (video, image, music) return a taskId. Poll /api/v1/jobs/recordInfo?taskId=... or pass a webhook URL to receive the result links.
Prompt examples
Pricing compare
| Provider | Price per image | Notes |
|---|---|---|
| AI Generate | $0.0455 | This site. Pay as you go from $10, no subscription. |
| fal.ai | $0.0360 | fal.ai list price for the same model, for reference. |
| Directly from Black Forest Labs | varies | Separate account and billing with the provider. |
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FAQ
How much does Black Forest Labs Flux 3 Klein, text to image, 4K cost?+
$0.0455 per image, charged from your credit balance. No monthly subscription and no minimum commitment. Top-ups start at $10 for 1,430 credits.
What kind of model is Black Forest Labs Flux 3 Klein, text to image, 4K?+
Black Forest Labs Flux 3 Klein, text to image, 4K is an image-generation model from Black Forest Labs, served through the AI Generate API.
How do I call Black Forest Labs Flux 3 Klein, text to image, 4K from my code?+
Send an HTTPS POST with your Bearer token to our /api/v1/ endpoint. Every model uses the same create-task request, so no provider SDK is needed. The "Use via API" section above has a working curl example.
Can I use Black Forest Labs Flux 3 Klein, text to image, 4K in production?+
Yes. The limit is 20 new requests per 10 seconds per API key, and status polling does not count against it. Each job returns a taskId, and you get the result by polling or through a webhook. Daily and monthly spend caps in the dashboard settings protect you from runaway usage.
What is the markup over the upstream price?+
We add 40% to the upstream price at the starting tier. When your spend over the last 30 days reaches $50, $200, $1,000 or $5,000, the markup drops to 30%, 22%, 15% or 10% automatically.
Ready to try Black Forest Labs Flux 3 Klein, text to image, 4K?
Create an account and top up from $10 (1,430 credits). You pay only for what you run: $0.0455 per image.