Image model comparison

FLUX.1 Kontext [pro] vs Nano Banana 2.1

Black Forest Labs' FLUX.1 Kontext [pro] and Google's Nano Banana 2.1, side by side: price per image, image sizes, editing and aspect ratios — and when to choose which. Both run on one Cheaper Gen. API key.

Black Forest Labs

Up to −31%

FLUX.1 Kontext[pro]

FLUX.1 Kontext [pro]

Instruction-based image editing that keeps characters consistent (legacy)

from

$0.0275/image

Google

Up to −59%

Nano Banana2.1

Nano Banana 2.1

Google's newest Nano Banana — top-ranked quality at a quarter of Pro's price

from

$0.022/image

Price

FLUX.1 Kontext [pro] vs Nano Banana 2.1: price per image

Live prices at the tier both models offer. Official list prices are on each model's pricing page.

FLUX.1 Kontext [pro] and Nano Banana 2.1 prices at shared tiers
Tier	FLUX.1 Kontext [pro]	Nano Banana 2.1	Cheaper
1K	$0.0275/image Image	$0.022/image 1K	Nano Banana 2.1 −20%

FLUX.1 Kontext [pro] pricing →Cheap FLUX.1 Kontext [pro] API →Nano Banana 2.1 pricing →Cheap Nano Banana 2.1 API →

Specs

Side-by-side specifications

From each model's API parameters in our catalog.

FLUX.1 Kontext [pro] vs Nano Banana 2.1 specifications
Spec	FLUX.1 Kontext [pro]	Nano Banana 2.1
Developer	Black Forest Labs	Google
Released	May 29, 2025	Oct 6, 2026
Tasks	Text to image, Image editing	Text to image, Image editing
Sizes	1K	1K · 2K · 4K
Edit inputs	Up to 4 images	Up to 14 images
Quality levels	—	—
Aspect ratios	9 (1:1, 4:3, 3:4, 16:9, 9:16, 3:2…)	14 (1:1, 2:3, 3:2, 3:4, 4:3, 4:5…)
Starting price	$0.0275/image (Image)	$0.022/image (1K)
Below official price	up to 31%	up to 59%

Verdict

When to choose which

Each point below comes from the price and spec data above.

Choose FLUX.1 Kontext [pro] for

The same tasks at a similar price — pick by output style; try both in the Studio.

FLUX.1 Kontext [pro] at a glance

Flat price — One price per image
Consistent edits — Faces and objects stay
4 inputs — Combine up to 4 images
Fast — Seconds per edit

Choose Nano Banana 2.1 for

Lower price: $0.022/image vs $0.0275/image at 1K (20% less).
Higher maximum resolution: 4K vs 1K.
Edits with up to 14 input images (vs 4).
More aspect ratios: 14 vs 9.
Newer model (released October 6, 2026).

Nano Banana 2.1 at a glance

Up to 4K — 1K, 2K and 4K output
Low price — About 2 cents per 1K image
14 inputs — Multi-image editing
14 ratios — From 8:1 banners to 1:8

Try both with the same prompt

Same API key and balance; only the endpoint changes. Failed generations are refunded.

POST /api/v1/run/bfl/flux-kontext-pro/text-to-image
POST /api/v1/run/google/nano-banana-2.1/text-to-image

FLUX.1 Kontext [pro] in Studio Nano Banana 2.1 in Studio

FAQ

FLUX.1 Kontext [pro] vs Nano Banana 2.1 questions

Nano Banana 2.1 is cheaper at 1 of 1 shared tiers. 1K: FLUX.1 Kontext [pro] $0.0275/image, Nano Banana 2.1 $0.022/image. Prices are live and billed per image.

FLUX.1 Kontext [pro]: up to 1K, edits with up to 4 input images. Nano Banana 2.1: up to 4K, edits with up to 14 input images.

Yes. Both run through the same Cheaper Gen. API and balance: POST /v1/run/{endpoint} with the model's endpoint id, then poll or receive a webhook. Switching models means changing the endpoint and its input fields — no new account or SDK.

Keep comparing

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All comparisons →All AI image APIs →Cheapest image APIs →

FLUX.1 Kontext [pro] is developed by Black Forest Labs; Nano Banana 2.1 by Google. Cheaper Gen. provides API access to both through official upstream endpoints and does not own either model. Trademarks belong to their respective owners.