Image model comparison

Seedream 5.0 Pro vs GPT Image 2.5

ByteDance's Seedream 5.0 Pro and OpenAI's GPT Image 2.5, 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.

ByteDance

Up to −28%

Seedream5.0 Pro

Seedream 5.0 Pro

Production-grade image generation and precise editing

from

$0.0322/image

OpenAI

Up to −12%

GPT Image2.5

GPT Image 2.5

OpenAI's top image model — precise edits, perfect text, up to 4K

from

$0.0066/image

Price

Seedream 5.0 Pro vs GPT Image 2.5: price per image

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

Seedream 5.0 Pro and GPT Image 2.5 prices at shared tiers
Tier	Seedream 5.0 Pro	GPT Image 2.5	Cheaper
1K	$0.0322/image 1K	$0.0066/image 1K · low	GPT Image 2.5 −80%
2K	$0.0644/image 2K	$0.0118/image 2K · low	GPT Image 2.5 −82%

Seedream 5.0 Pro pricing →Cheap Seedream 5.0 Pro API →GPT Image 2.5 pricing →Cheap GPT Image 2.5 API →

Specs

Side-by-side specifications

From each model's API parameters in our catalog.

Seedream 5.0 Pro vs GPT Image 2.5 specifications
Spec	Seedream 5.0 Pro	GPT Image 2.5
Developer	ByteDance	OpenAI
Released	Jul 8, 2026	Sep 8, 2026
Tasks	Text to image, Image editing	Text to image, Image editing
Sizes	1K · 2K	1K · 2K · 4K
Edit inputs	Up to 10 images	Up to 16 images
Quality levels	—	low · medium · high · xhigh · max
Aspect ratios	8 (1:1, 4:3, 3:4, 16:9, 9:16, 3:2…)	11 (1:1, 3:2, 2:3, 4:3, 3:4, 5:4…)
Starting price	$0.0322/image (1K)	$0.0066/image (1K · low)
Below official price	up to 28%	up to 12%

Verdict

When to choose which

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

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

Choose GPT Image 2.5 for

Lower price: $0.0066/image vs $0.0322/image at 1K (80% less).
Higher maximum resolution: 4K vs 2K.
Edits with up to 16 input images (vs 10).
More aspect ratios: 11 vs 8.
Newer model (released September 8, 2026).

GPT Image 2.5 at a glance

Up to 4K — 1K, 2K and 4K tiers
5 quality levels — Low to max
16 references — Multi-image editing
Precise text — Layouts and labels

Try both with the same prompt

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

POST /api/v1/run/bytedance/seedream-5.0-pro/text-to-image
POST /api/v1/run/openai/gpt-image-2.5/text-to-image

Seedream 5.0 Pro in Studio GPT Image 2.5 in Studio

FAQ

Seedream 5.0 Pro vs GPT Image 2.5 questions

GPT Image 2.5 is cheaper at 2 of 2 shared tiers. 1K: Seedream 5.0 Pro $0.0322/image, GPT Image 2.5 $0.0066/image; 2K: Seedream 5.0 Pro $0.0644/image, GPT Image 2.5 $0.0118/image. Prices are live and billed per image.

Seedream 5.0 Pro: up to 2K, edits with up to 10 input images. GPT Image 2.5: up to 4K, edits with up to 16 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 →

Seedream 5.0 Pro is developed by ByteDance; GPT Image 2.5 by OpenAI. Cheaper Gen. provides API access to both through official upstream endpoints and does not own either model. Trademarks belong to their respective owners.