image model · Black Forest Labs

FLUX.2 Klein 4B

Photographs you can’t tell from photographs.

Photoreal portraits, products and editorial images — with precise reference edits.

See all image models →Starter is $9 for the first month, then $29/mo. Cancel anytime.

Hyper realistic 3D abstract glossy sculpture with smooth liquid like shapes thick twisted forms blobs drips and splash style protrusions like melted lacquer or glossy resin. Interconnected organic shapes bending and stretching dynamically. Colors are replaced with a new surprising palette. Strong studio lighting with intense highlights and soft internal shadows emphasizing a wet plastic shine. Solid pure black background no noise no texture high contrast minimal composition. melancholic, timeless, and very atmospheric street photography style, with prominent film grain.

Image · FLUX.2 Klein 4B

Add a reference

Source-linked examples. Pick a picture, then make the prompt yours.

What it does best

What it does best. Each claim, shown.

Real FLUX.2 Klein 4B outputs, with prompts to try and links to their sources.

A surreal long-lens shot of a woman in a red dress running across a field of soft, rounded volcanic hills. Deep rust and charcoal tones, cobalt sky overhead. Painterly matte texture, soft light, blurred motion. Minimal, timeless, and silent. — Example 2

Example sources: Replicate · black-forest-labs Replicate · black-forest-labs

Specs

Under the hood

Output: High-res, 4:3 default + custom aspect ratios
Inputs: Prompt (required) · Image

Provider: Black Forest Labs
Price here: 2 credits per image (≈ $0.02)
Family: flux-2
Render time: Fast — usually under 10s
Prompt language: English only
Commercial use: Allowed — outputs are yours

How to prompt it

A prompt to start from. Make it yours.

Click an example and it lands in the box above.

Strengths and limits

Good at, and not.

Good at

low cost
reference editing
open weights

Watch out for

English prompts only
less detail than 9B

Versions and family

Meet the family

The models available here, and what each is for.

FLUX.2 Klein 4B · this pagelow cost · reference editing · open weights FLUX.2 Klein 9Bfine detail · reference editing · open weights FLUX.2 [dev]multilingual · reference editing · open weights FLUX.2 [max]fine detail · instruction following · reference editing FLUX.2 [flex]tunable quality · reference editing · multilingual

Questions

Straight answers

How much does FLUX.2 Klein 4B cost?+

2 credits / image (≈ $0.02). One Mintdreamer subscription covers FLUX.2 Klein 4B and every other model, starting with Starter at $9 for the first month, then $29/mo. Cancel anytime.

Is FLUX.2 Klein 4B free to try?+

FLUX.2 Klein 4B is included on Starter. Continue to Studio with your prompt and model, then choose a plan to generate. Starter is $9 for the first month, then $29/mo. Cancel anytime.

Do failed generations cost credits?+

No. If a generation fails, gets rejected, or comes back unusable, Mintdreamer refunds the credits automatically — you only pay for results you keep.

Do I need an API key or a separate signup?+

No. FLUX.2 Klein 4B runs inside Mintdreamer's studio — one login, one plan. Switch between it and any other model mid-session without per-vendor accounts.

Can I use the images commercially?+

Yes. Outputs are yours to use commercially, subject to our terms.

What languages does FLUX.2 Klein 4B understand?+

FLUX.2 Klein 4B is trained on English prompts — write your prompt in English for best results. Mintdreamer can translate non-English prompts before generating.

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Your idea. Start here.

The box remembers the prompt you picked above.

FLUX.2 Klein 4B

What it does best. Each claim, shown.

Example 1

Example 2