Image model comparison

Nano Banana 2.1 vs Seedream 5.0 Pro

Google's Nano Banana 2.1 and ByteDance's Seedream 5.0 Pro, 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.

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

ByteDance

Up to −28%

Seedream5.0 Pro

Seedream 5.0 Pro

Production-grade image generation and precise editing

from

$0.0322/image

Price

Nano Banana 2.1 vs Seedream 5.0 Pro: price per image

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

Nano Banana 2.1 and Seedream 5.0 Pro prices at shared tiers
Tier	Nano Banana 2.1	Seedream 5.0 Pro	Cheaper
1K	$0.022/image	$0.0322/image	Nano Banana 2.1 −32%
2K	$0.033/image	$0.0644/image	Nano Banana 2.1 −49%

Nano Banana 2.1 pricing →Cheap Nano Banana 2.1 API →Seedream 5.0 Pro pricing →Cheap Seedream 5.0 Pro API →

Specs

Side-by-side specifications

From each model's API parameters in our catalog.

Nano Banana 2.1 vs Seedream 5.0 Pro specifications
Spec	Nano Banana 2.1	Seedream 5.0 Pro
Developer	Google	ByteDance
Released	Oct 6, 2026	Jul 8, 2026
Tasks	Text to image, Image editing	Text to image, Image editing
Sizes	1K · 2K · 4K	1K · 2K
Edit inputs	Up to 14 images	Up to 10 images
Quality levels	—	—
Aspect ratios	14 (1:1, 2:3, 3:2, 3:4, 4:3, 4:5…)	8 (1:1, 4:3, 3:4, 16:9, 9:16, 3:2…)
Starting price	$0.022/image (1K)	$0.0322/image (1K)
Below official price	up to 59%	up to 28%

Verdict

When to choose which

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

Choose Nano Banana 2.1 for

Lower price: $0.022/image vs $0.0322/image at 1K (32% less).
Higher maximum resolution: 4K vs 2K.
Edits with up to 14 input images (vs 10).
More aspect ratios: 14 vs 8.
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

Choose Seedream 5.0 Pro for

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

Seedream 5.0 Pro at a glance

Up to 2K — ≈4 MP outputs
Multi-image edit — Combine up to 10 inputs
Text rendering — Legible in-image typography
Fast turnaround — Seconds per image

Try both with the same prompt

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

POST /api/v1/run/google/nano-banana-2.1/text-to-image
POST /api/v1/run/bytedance/seedream-5.0-pro/text-to-image

Nano Banana 2.1 in Studio Seedream 5.0 Pro in Studio

FAQ

Nano Banana 2.1 vs Seedream 5.0 Pro questions

Nano Banana 2.1 is cheaper at 2 of 2 shared tiers. 1K: Nano Banana 2.1 $0.022/image, Seedream 5.0 Pro $0.0322/image; 2K: Nano Banana 2.1 $0.033/image, Seedream 5.0 Pro $0.0644/image. Prices are live and billed per image.

Nano Banana 2.1: up to 4K, edits with up to 14 input images. Seedream 5.0 Pro: up to 2K, edits with up to 10 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 →

Nano Banana 2.1 is developed by Google; Seedream 5.0 Pro by ByteDance. Cheaper Gen. provides API access to both through official upstream endpoints and does not own either model. Trademarks belong to their respective owners.