// Real output from FLUX 3 Klein — generated through the API
by Black Forest Labs
The small FLUX 3 image model: 1K, 2K or 4K at a budget price.
// Real output from FLUX 3 Klein — generated through the API
Call the FLUX 3 Klein API through your SamAutomation key — submit a job with the model_id, then poll until it's done. One key for every model, no per-vendor onboarding or separate billing.
Yes. On SamAutomation FLUX 3 Klein runs through one endpoint - POST /api/ai/jobs with model_id "flux-3-klein" - so you do not need a separate account or key with Black Forest Labs. You submit a job and poll it until the image is ready.
FLUX 3 Klein starts at 8 credits per job at its cheapest settings. Higher resolution costs more. Credits come with a plan, and the same key also covers JSON-to-video rendering and every other model.
No. Every render costs credits - 8 at the floor for FLUX 3 Klein. Plans bundle monthly credits.
You reach FLUX 3 Klein through this API with your SamAutomation key, not through Black Forest Labs's own app, so that app's sign-up and regional availability are not what gates you. The model's own content rules still apply to what you generate.
Black Forest Labs publishes the model itself; this page is about calling it as an API alongside every other model on one key, which is a different job from their consumer app.
There is nothing to download. The FLUX 3 Klein API documentation you need here is our own reference: one endpoint, one key, and the model_id above. Black Forest Labs publishes its own docs for the model, but those describe their platform, not this one.
If it is listed on this page it is active on the platform and you can call it today. Model availability moves — makers retire versions and add tiers — so the list here is the current state rather than a promise about next quarter.
You do not need a vendor SDK here. FLUX 3 Klein is an HTTP call: POST /api/ai/jobs with your key and model_id "flux-3-klein", then poll the job. Any language that can send JSON can drive it, and the request shape is the same for every model on this platform.
The practical questions are the same for every generation service: what the provider may do with what you upload, how long it is kept, and whether it can be used for training. Read that clause before you send client material through any model, ours included. Black Forest Labs publishes its own terms for the model itself.
That is up to Black Forest Labs, not to us, and it differs per model and per release. If open weights matter to you, check the maker's own licence. Running it here is renting inference, not getting the weights.
No. The consumer app and the API are separate products with separate limits. Here you call FLUX 3 Klein through this platform, so there is no app to install and no second subscription.
The small FLUX 3 image model: 1K, 2K or 4K at a budget price. Pick it when that is the job; a cheaper model wins when it is not.
One key for JSON-to-video and every AI model — FLUX 3 Klein starts at 8 credits. Documented and ready for your pipeline.