image model · by Black Forest Labs
FLUX 2 Klein AI Image Generator
Generate and edit images in under a second with FLUX 2 Klein - Black Forest Labs' fastest model family, distilled from the 32B FLUX.2 base. Unified text-to-image, image editing, and multi-reference generation in a single architecture, available on Fliki's free plan alongside Z Image Turbo.
Generated with FLUX 2 Klein
A handful of FLUX 2 Klein samples generated inside Fliki. No edits, no post.

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What makes FLUX 2 Klein different
Sub-second generation
FLUX 2 Klein produces images and edits in well under a second. The 9B variant runs in roughly half a second on modern GPUs, and the 4B Apache-2.0 variant fits in around 13GB of VRAM - fast enough for true real-time creative iteration.
Unified generation and editing
Most models split text-to-image and image editing across separate endpoints. FLUX 2 Klein handles both - plus multi-reference generation - in a single architecture. You can generate a concept and edit it without switching models.
Multi-reference editing
Provide multiple input images to blend concepts, lock characters across scenes, or compose products into new contexts. FLUX 2 Klein supports multi-reference workflows that previously required much larger models.
Open-source under Apache 2.0
The 4B FLUX 2 Klein variant is fully open under Apache 2.0. The 9B variant ships under the FLUX Non-Commercial License with API access for commercial use. On Fliki, you get hosted access without local setup.
Distilled from a 32B teacher
FLUX 2 Klein is size-distilled from the 32B FLUX.2 base model, which means it inherits sophisticated understanding of lighting, materials, and composition while staying small enough for real-time inference.
Available on Fliki's free plan
FLUX 2 Klein is one of two image models available on Fliki's free tier. Test the unified generation-and-editing workflow without committing to a paid plan.
Strong text and layout rendering
Klein renders typography in mockups, infographics, and UI layouts with clean, readable output - a key strength inherited from the FLUX.2 base.
Multi-resolution support
Generate at sizes from compact preview up to high-resolution outputs. The model handles common aspect ratios natively for landscape, portrait, square, and vertical social formats.
Photoreal lighting and materials
Black Forest Labs ships FLUX 2 Klein with the same photorealism focus as the FLUX.2 base model: physically plausible lighting, accurate material response, and clean handling of glass, metal, fabric, and skin. Pulls into hero work, ad creative, and product mockups without obvious AI tells.
How it works
How to generate an image with FLUX 2 Klein
FLUX 2 Klein runs inside Fliki's AI image generator. Here's the six-step flow.

Write your prompt
FLUX 2 Klein doesn't use prompt upsampling, so write detailed, descriptive prompts for best results. Mention subject, lighting, framing, and style explicitly.

Select FLUX 2 Klein as your model
Open Fliki's model selector and choose FLUX 2 Klein. Your prompt routes to Black Forest Labs' distilled FLUX 2 model.

Pick your aspect ratio
Choose 1:1 for Instagram feed, 16:9 for blog and YouTube, 9:16 for TikTok and Reels. 4:3 and 3:4 are also composed natively.

Add reference images (optional)
Upload one or more reference images to drive editing or multi-reference generation. This is one of FLUX 2 Klein's standout workflows - locking a character or product across multiple outputs.

Set the resolution
Pick a resolution that matches your use case. Lower resolutions iterate faster; higher resolutions are ready for final delivery.

Generate
Hit Generate. FLUX 2 Klein returns output in under a second on most prompts and is available on Fliki's free plan, so you can iterate without burning paid credits.
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FLUX 2 Klein FAQ
Frequently asked questions
Everything you need to know about generating images with FLUX 2 Klein inside Fliki.
What is FLUX 2 Klein?
FLUX 2 Klein is Black Forest Labs' fastest image model family, distilled from the 32B FLUX.2 base. It's available in 4B (Apache 2.0) and 9B variants and unifies text-to-image, image editing, and multi-reference generation in a single architecture, with sub-second inference on consumer GPUs.
Is FLUX 2 Klein free on Fliki?
Yes. FLUX 2 Klein is one of two image models available on Fliki's free plan, along with Z Image Turbo. Free users get monthly credits to use across both; paid plans unlock the rest of the catalog.
When was FLUX 2 Klein released?
Black Forest Labs released FLUX 2 Klein on January 15, 2026, following the November 25, 2025 release of the 32B FLUX.2 [dev] base model.
How does FLUX 2 Klein compare to FLUX 2?
FLUX 2 Klein is the speed-and-real-time tier; FLUX 2 (specifically [pro] and [dev]) is the higher-fidelity flagship. Klein is faster and lighter; FLUX 2 has more raw capability and supports up to 10 reference images. Use Klein for iteration and real-time workflows; use FLUX 2 for hero content.
Does FLUX 2 Klein support image editing?
Yes. Editing is built into the same architecture as generation. Upload an image and describe your change in natural language; Klein handles single-reference edits and multi-reference composition.
Is FLUX 2 Klein open source?
The 4B variant is fully open source under Apache 2.0. The 9B variant uses the FLUX Non-Commercial License for open weights, with API access for commercial use - which is what you get on Fliki.
Still curious?
Try Fliki free in your browser, no credit card required.
Start freeWhat resolutions does FLUX 2 Klein support?
Klein supports common aspect ratios natively, with resolution options that scale based on your use case from preview to high-resolution final output.
How does FLUX 2 Klein compare to Z Image Turbo?
Both are free-plan models. FLUX 2 Klein covers both generation and editing in one model with multi-reference support. Z Image Turbo is faster and especially strong on text rendering. Pick Klein when you need editing; pick Z Image Turbo for fast text-to-image.
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