How much does FLUX 3 Klein cost?

From $0.009 an image at 1K through the API ($0.014 at 2K on fal), and nothing to run on your own hardware under the FLUX Kommunity License. On RenderHour it is 0.65 credits at 1K and 1 credit at 2K.

Is FLUX 3 Klein free for commercial use?

The weights are, for individuals and companies with under $5 million in yearly revenue, under the FLUX Kommunity License. Larger companies need a self-hosting licence or the API.

Krea 3 is Krea’s image editing and generation model, released on October 15, 2026. Krea says most edits take under 8 seconds at native 2K, with up to 6 reference images, and that it keeps products and faces the same when the scene changes.

How much does Krea 3 cost?

Krea lists $0.03 an image at 1K and $0.06 at 2K. fal bills $0.025 a megapixel, counting each reference image as well as the output. On RenderHour it is 3.75 credits at 1K and 14.75 at 2K, with one reference image.

Where can I use FLUX 3 Klein and Krea 3 without code?

On RenderHour (renderhour.com): open the Image page and pick FLUX 3 Klein or Krea 3. Both are paid from the same credits as Nano Banana, GPT Image, Kling and Seedance, and the 3-day free trial covers every model.

FLUX 3 Klein or Krea 3: which is better for editing?

In our one-edit test on RenderHour, FLUX 3 Klein changed the untouched part of the photo less than Krea 3 (8.62 against 21.70 on a 0 to 255 scale), and Nano Banana 2.1 least of all (2.94). Krea 3 is built for speed at 2K; FLUX 3 Klein for many references at a very low price.

FLUX 3 Klein vs Krea 3: an Open 5.6B Model at $0.009 and a 2K Editor Under 8 Seconds

RenderHour · October 27, 2026 · 10 min read

In short

FLUX 3 Klein is Black Forest Labs’ open-weights image model with 5.6B parameters: up to 10 references, layout boxes, an API price from $0.009 an image, and it runs on a graphics card with 8 GB of memory.
Krea 3 is Krea’s editing model: most edits in under 8 seconds at native 2K, up to 6 references, $0.03 an image at 1K and $0.06 at 2K.
Both are on RenderHour since October 27, 2026: FLUX 3 Klein at 0.65 credits an image at 1K, Krea 3 at 3.75.

FLUX 3 Klein image: an unlabeled bottle of orange juice beaded with condensation on a white stone ledge, orange halves and leaves, blue sea and sky behind — **FLUX 3 Klein**, 1K, 4:5: 0.65 credits.Made with FLUX 3 Klein on RenderHourPrompt: A glass bottle of cold-pressed orange juice with no label on a sunlit white stone ledge, two orange halves and a few green leaves beside it, droplets of condensation on the glass, hard summer shadows, deep blue Mediterranean sky behind, commercial product photo.

Two image models came out on October 15, 2026, and they pull in opposite directions. FLUX 3 Klein from Black Forest Labs is small, open and cheap: $0.009 an image through the API, or free to run on your own graphics card. Krea 3 is a closed editor built for speed at 2K. On RenderHour, FLUX 3 Klein costs 0.65 credits an image and Krea 3 3.75. We gave both the same jobs, and the same edit we gave Nano Banana 2.1.

What is FLUX 3 Klein?

FLUX 3 Klein (Black Forest Labs calls it FLUX 3 Image Klein) is the smallest model of the FLUX 3 family. One model makes images from text, edits them and combines up to 10 reference images. Bounding boxes set where things go in the frame, or keep an edit inside an area.

Open weights, 5.6B parameters, on Hugging Face in 2 versions: a base model for fine-tuning (50 steps) and a distilled one for speed (16 steps).
Runs at home: 11.2 GB of weights in BF16 and 5.6 GB in FP8; the INT8 build runs on a GeForce RTX card with as little as 8 GB of memory.
Licence: the FLUX Kommunity License allows free commercial use for people and companies under $5 million in yearly revenue. Larger companies license it or use the API.
Better than its parent, per BFL: +91 Elo in text-to-image and +70 in editing over FLUX.2 Klein 9B, with 38% fewer parameters.

FLUX 3 Klein speed for a 1-megapixel image, per Black Forest Labs

Hardware and setup	Time
NVIDIA GB300, distilled, NVFP4	Under 0.6 s
GeForce RTX 5090, distilled, INT8	About 4 s
BFL API, text to image (median)	4.54 s
BFL API, editing (median)	7.18 s
GeForce RTX 4070 in ComfyUI, distilled, INT8	8.9 s
DGX Spark, base model, 50 steps	43.8 s

Source: Black Forest Labs, FLUX 3 Image Klein announcement, October 15, 2026.

What is Krea 3?

Krea 3 is the image model of Krea, the AI design app that says it has 30 million users. It is built around editing: give it photos and say what to change. Krea says it keeps a product as it is, down to the label and the logo, and keeps a person the same person in a new scene. It takes up to 6 reference images per edit on krea.ai, and works natively at 2K.

Seconds per image edit, Krea’s measurementMedian time for edit jobs on Krea, September 24 to October 1, 2026, queue included. Shorter is faster.

Krea 3under 8 s
Nano Banana 227 s
Nano Banana Pro33 s
GPT Image 290 s

Source: Krea, Introducing Krea 3, October 15, 2026. Krea’s own numbers.

By Krea’s figures, it edits about 4 times faster than Nano Banana Pro and 11 times faster than GPT Image 2. At Krea’s list prices, 100,000 edits a month cost $6,000 with Krea 3, $13,500 with Nano Banana Pro and $22,000 with GPT Image 2.

How much do FLUX 3 Klein and Krea 3 cost?

API list price for one imageEach maker’s price, reference images not counted. Shorter is cheaper.

FLUX 3 Klein (1K)$0.009
FLUX 3 Klein (2K)$0.014
Krea 3 (1K)$0.03
Nano Banana 2.1 (1K)$0.0336
Krea 3 (2K)$0.06
Nano Banana Pro (2K)$0.134

Source: Black Forest Labs and fal (FLUX 3 Klein; fal calls its rates not yet final), Krea (Krea 3), Google Gemini API (Nano Banana), read October 27, 2026.

On RenderHour both are paid from the same credits as every other model. FLUX 3 Klein is the second-cheapest image model here, after Z-Image. Krea 3 sits next to Nano Banana 2.1 and FLUX 3 Image at 1K, and costs more than Nano Banana Pro at 2K.

Credits for one image on RenderHourShorter is cheaper.

Z-Image0.4
FLUX 3 Klein (1K)0.65
FLUX 3 Klein (2K)1
Nano Banana 2.1 (1K)3
FLUX 3 Image (1K)3.5
Krea 3 (1K)3.75
Nano Banana Pro10.75
Krea 3 (2K)14.75

Source: RenderHour price list, October 27, 2026.

FLUX 3 Klein and Krea 3 side by side, October 27, 2026

	FLUX 3 Klein	Krea 3
Maker	Black Forest Labs	Krea
Released	October 15, 2026	October 15, 2026
Weights	Open, 5.6B parameters	Closed
References, maker’s limit	Up to 10	Up to 6 (8 at fal)
References on RenderHour	Up to 10	1
Sizes on RenderHour	1K, 2K	1K, 2K
API price, 1K / 2K	$0.009 / $0.014	$0.03 / $0.06
RenderHour, 1K / 2K	0.65 / 1 credit	3.75 / 14.75 credits
On Plus yearly, 1K	About 2.5 cents	About 15 cents

Source: Black Forest Labs, Krea, fal and the RenderHour price list. Dollars on Plus billed yearly ($564 a year for 1,200 credits a month) by our arithmetic.

Why does Krea 3 take one reference here? fal bills it $0.025 a megapixel for the output and for every reference, so each extra photo raises the cost of the image. RenderHour prices a Krea 3 image for its output plus one reference, which keeps the price per image fixed. FLUX 3 Klein’s references are not billed, so all 10 are open.

One prompt on both: which looks better?

Krea 3 image: a capped bottle of orange juice on a white stone ledge, two orange halves and leaves, plain deep blue sky behind — **FLUX 3 Klein**, 1K, 4:5: 0.65 credits.Made with FLUX 3 Klein on RenderHourPrompt: A glass bottle of cold-pressed orange juice with no label on a sunlit white stone ledge, two orange halves and a few green leaves beside it, droplets of condensation on the glass, hard summer shadows, deep blue Mediterranean sky behind, commercial product photo.

Prompt

A glass bottle of cold-pressed orange juice with no label on a sunlit white stone ledge, two orange halves and a few green leaves beside it, droplets of condensation on the glass, hard summer shadows, deep blue Mediterranean sky behind, commercial product photo.

What we see: FLUX 3 Klein followed the prompt closely: no label, condensation droplets all over the glass, orange halves, leaves and the sea on the horizon, in hard sunlight. The bottle is a plain jar with a rim and no cap. Krea 3 made a cleaner, more graphic shot: a capped bottle, wide empty sky, a long hard shadow. It skipped the condensation, and its sky has no sea. Neither shows text artifacts. Krea itself puts editing first; on this one prompt its picture is clean but follows the brief less closely.

One edit on 3 models: what stays the same?

Editing is where Krea 3 says it shines, so we gave it, FLUX 3 Klein and Nano Banana 2.1 the same photo and the same instruction: swap the croissant for a blueberry muffin and keep everything else. It is the first edit of our Nano Banana 2.1 drift test.

The starting photo: latte, a croissant on a blue plate, an open notebook, glasses and eucalyptus on an oak table, seen from above — **The photo we edited**, made with Nano Banana 2.1.Made with Nano Banana 2.1 on RenderHourPrompt: Top-down flat lay on a light oak table: a white ceramic cup of latte with a leaf of latte art, a golden croissant on a small blue plate, an open notebook with handwritten notes and a pencil, a sprig of eucalyptus, a pair of round glasses, soft morning window light with gentle shadows, clean lifestyle photography.

Nano Banana 2.1 edit: a blueberry muffin with crumbs on the blue plate, the rest of the flat lay unchanged to the eye — **The photo we edited**, made with Nano Banana 2.1.Made with Nano Banana 2.1 on RenderHourPrompt: Top-down flat lay on a light oak table: a white ceramic cup of latte with a leaf of latte art, a golden croissant on a small blue plate, an open notebook with handwritten notes and a pencil, a sprig of eucalyptus, a pair of round glasses, soft morning window light with gentle shadows, clean lifestyle photography.

Prompt

Replace the croissant with a blueberry muffin on the same plate. Keep everything else in the photo exactly the same.

How much the untouched notebook changed after 1 editMean pixel difference from the original in the notebook area, 0 to 255 scale, all images scaled to 816×1024. Shorter means less change.

Nano Banana 2.12.94
FLUX 3 Klein8.62
Krea 321.70

Source: RenderHour test, October 27, 2026; one run per model.

All 3 made a good muffin swap. The difference is the rest of the photo. Nano Banana 2.1 left it almost untouched. FLUX 3 Klein kept the layout but redrew details: the crumbs on the plate are gone, and the plate came out larger with a heavier shadow. Krea 3 painted a smooth, bright muffin with perfectly round berries and moved the whole layout slightly up the frame, which is why its notebook number is high even though nothing in it looks wrong. This is one run on one photo, and Krea 3 and FLUX 3 Klein had no area to stay inside: FLUX 3 Klein’s boxes are not in RenderHour yet.

FLUX 3 Klein with 2 references

Multi-reference is FLUX 3 Klein’s strength, so we gave it the juice bottle and the muffin plate as 2 references and asked for both on a café table.

FLUX 3 Klein image from 2 references: the juice bottle and the muffin plate together on a marble café table by a window — **FLUX 3 Klein** with 2 reference images, 1K: 0.65 credits.Made with FLUX 3 Klein on RenderHourPrompt: A white marble café table by a window in soft morning light. On it stand the glass bottle of orange juice from the first image and, beside it, the blue plate with the blueberry muffin from the second image. Close-up product photo, shallow depth of field.

It kept the bottle’s shape and droplets, the blue plate and the muffin with its crumbs, and brought the green leaves along. The muffin gained a paper case that the reference did not have. For 0.65 credits, that is a usable product scene.

FLUX 3 Klein and Krea 3 in 6 numbers

8 GB: the graphics memory FLUX 3 Klein’s INT8 build needs, so a gaming PC can run it.
1,846: FLUX 3 Klein images at 1K that one month of Plus credits buys on RenderHour (1,200 ÷ 0.65), by our arithmetic.
$5 million: the yearly revenue under which FLUX 3 Klein’s weights are free for commercial use.
30 million: the users Krea says it has on krea.ai.
4 to 5 seconds: Krea’s fastest setup for one edit at 2K.
$6,000 vs $22,000: 100,000 edits a month on Krea 3 against GPT Image 2, at Krea’s list prices.

What this means if you make content for social and ads

Draft in FLUX 3 Klein. At 0.65 credits, test 10 layouts for a post for 6.5 credits, then remake the winner on a stronger model.
Put products together with FLUX 3 Klein. Up to 10 references: the product, the packaging, the props and the background in one picture.
Change one photo with Krea 3. Give it the shot and the change you want: a new background, light or season, at 2K for the final.
Need the rest of the frame to stay put? Check it. In our test Nano Banana 2.1 moved the least for one edit; read our drift test before a long chain of edits.
For finished ads, the Ads Studio turns a product page into ready creatives.

Try both on the 3-day free trial, 80 credits on every model: 123 FLUX 3 Klein images at 1K, or 21 Krea 3 edits. Open FLUX 3 Klein or open Krea 3.

Every image and video model for one yearly price

Plus billed yearly is $564 for 1,200 credits a month, about 3.9 cents a credit: FLUX 3 Klein, Krea 3, Nano Banana, GPT Image, Kling, Seedance and Veo from one balance. Yearly billing costs less than paying month by month.

See yearly plans

Questions

What is FLUX 3 Klein?: FLUX 3 Klein (FLUX 3 Image Klein) is an open-weights image model from Black Forest Labs with 5.6B parameters, released on October 15, 2026. It makes and edits images from text and up to 10 reference images, with bounding boxes for layout, and runs on a graphics card with 8 GB of memory in its INT8 build.
How much does FLUX 3 Klein cost?: From $0.009 an image at 1K through the API ($0.014 at 2K on fal), and nothing to run on your own hardware under the FLUX Kommunity License. On RenderHour it is 0.65 credits at 1K and 1 credit at 2K.
Is FLUX 3 Klein free for commercial use?: The weights are, for individuals and companies with under $5 million in yearly revenue, under the FLUX Kommunity License. Larger companies need a self-hosting licence or the API.
What is Krea 3?: Krea 3 is Krea’s image editing and generation model, released on October 15, 2026. Krea says most edits take under 8 seconds at native 2K, with up to 6 reference images, and that it keeps products and faces the same when the scene changes.
How much does Krea 3 cost?: Krea lists $0.03 an image at 1K and $0.06 at 2K. fal bills $0.025 a megapixel, counting each reference image as well as the output. On RenderHour it is 3.75 credits at 1K and 14.75 at 2K, with one reference image.
Where can I use FLUX 3 Klein and Krea 3 without code?: On RenderHour (renderhour.com): open the Image page and pick FLUX 3 Klein or Krea 3. Both are paid from the same credits as Nano Banana, GPT Image, Kling and Seedance, and the 3-day free trial covers every model.
FLUX 3 Klein or Krea 3: which is better for editing?: In our one-edit test on RenderHour, FLUX 3 Klein changed the untouched part of the photo less than Krea 3 (8.62 against 21.70 on a 0 to 255 scale), and Nano Banana 2.1 least of all (2.94). Krea 3 is built for speed at 2K; FLUX 3 Klein for many references at a very low price.

Try FLUX 3 Klein on RenderHour

10 free credits to start and a 3-day free trial. You see the price in credits before you generate, and a failed run costs nothing.

Try FLUX 3 Klein

Sources

Prices and rankings as of October 27, 2026. They change often; the links show the current figures.