What is FLUX.2 Klein?

It is the open-weight 4-billion-parameter tier of Black Forest Labs’ FLUX.2 family, distilled for sub-second generation at very low cost.

How much does it cost?

One tenth of a cent per image — $0.001 per output megapixel with output pinned to 1 MP — billed at cost. A thousand drafts costs about a dollar.

Can it edit or use reference images?

Not in Made’s current configuration. The provider bills input megapixels separately, so references stay disabled until input metering ships — use Flux 2 Pro for edits.

Why is the output 1 megapixel?

Billing follows output megapixels, so Made pins the 1 MP tier it bills at cost. Run an upscaler on finals that need more resolution.

How does it compare to Flux 2 Pro?

Klein trades fidelity for speed and price: it drafts fifty images for the cost of one Flux 2 Pro generation, while Pro delivers flagship detail and editing.

When should I choose another model?

Choose Flux 2 Pro for hero assets and edits, Z Image for another fast low-cost option, or Seedream 5 Lite for photoreal volume work.

FLUX.2 Klein prompts that actually ran

Every prompt below was generated with FLUX.2 Klein in Made, and the output next to it is what came back — not a curated stock image. Copy a prompt as a starting point, then use the guide underneath to adapt it.

Try FLUX.2 Klein FLUX.2 Klein pricing: $0.001 / image

Original results

FLUX.2 Klein prompts and their outputs

These examples use media produced for Made. Prompts are included when the production record allows them.

Translucent gel sneakers lit from below on a mirrored floor generated with FLUX.2 Klein in Made

FLUX.2 Klein: Product concept

“Studio shot of translucent gel sneakers lit from below on a mirrored floor”

Close editorial portrait of a ceramic artist with clay-dusted hands generated with FLUX.2 Klein in Made

FLUX.2 Klein: Editorial portrait

“Close editorial portrait of a ceramic artist with clay-dusted hands crossed under her chin, north-window light”

Minimal concert poster with the word ECHO in condensed type generated with FLUX.2 Klein in Made

FLUX.2 Klein: Graphic poster

“Minimal concert poster with the word ECHO in huge condensed type behind a silhouetted figure”

Moody walnut library den with a leather armchair generated with FLUX.2 Klein in Made

FLUX.2 Klein: Interior composition

“Moody library den with floor-to-ceiling walnut shelves, leather armchair, and a brass reading lamp”

Matcha pour with a powder cloud caught mid-air generated with FLUX.2 Klein in Made

FLUX.2 Klein: Food still life

“Still life of a matcha pour into a glass cup, powder cloud caught mid-air, sage-green backdrop”

Dreamlike lavender field under a violet storm sky generated with FLUX.2 Klein in Made

FLUX.2 Klein: Stylized landscape

“Dreamlike lavender field under a violet storm sky with a single white farmhouse”

How to write a FLUX.2 Klein prompt

1
Write a quick brief
Keep prompts direct — Klein is built for iteration speed, not long specifications.
2
Generate in batches
Request up to four images at once to compare directions in a single pass.
3
Pick a format
Choose from seven aspect ratios including 3:2 and 2:3 editorial frames.
4
Upgrade the winner
Re-run the winning brief on Flux 2 Pro when a hero asset needs flagship fidelity.

What FLUX.2 Klein responds well to

Prompt for these jobs

Sub-second drafts and rapid prompt iteration
High-volume creative exploration at $0.001 per image
Moodboards and thumbnail sketching before a Flux 2 Pro pass
Batches of up to four images per request

Check the output for

Text-to-image only in Made — reference and editing inputs stay disabled until input billing is metered.
Output is pinned to 1 megapixel; upscale winners before delivery.
Draft-tier fidelity — fine detail and typography trail Flux 2 Pro.

Iteration is cheap here: FLUX.2 Klein costs $0.001 / image at the provider's wholesale rate, so rewriting a prompt and rerunning it is a normal part of the workflow, not a budget decision. See the full FLUX.2 Klein pricing breakdown.

Questions, answered

FLUX.2 Klein prompts FAQ

Need a specific answer? Contact support

: It is the open-weight 4-billion-parameter tier of Black Forest Labs’ FLUX.2 family, distilled for sub-second generation at very low cost.

More tested prompts across all models live in the prompt library, and the full FLUX.2 Klein capability rundown is on the model page.