Image model comparison

GPT Image 2.5 vs Grok Imagine Image 2.0

OpenAI's GPT Image 2.5 and xAI's Grok Imagine Image 2.0, 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.

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

xAI

Up to −63%

Grok ImagineImage 2.0

Grok Imagine Image 2.0

xAI's top-ranked image model — photoreal, bold, fast

from

$0.022/image

Price

GPT Image 2.5 vs Grok Imagine Image 2.0: price per image

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

GPT Image 2.5 and Grok Imagine Image 2.0 prices at shared tiers
Tier	GPT Image 2.5	Grok Imagine Image 2.0	Cheaper
1K	$0.0066/image	$0.022/image	GPT Image 2.5 −70%
2K · low	$0.0118/image	$0.0528/image	GPT Image 2.5 −78%

GPT Image 2.5 pricing →Cheap GPT Image 2.5 API →Grok Imagine Image 2.0 pricing →Cheap Grok Imagine Image 2.0 API →

Specs

Side-by-side specifications

From each model's API parameters in our catalog.

GPT Image 2.5 vs Grok Imagine Image 2.0 specifications
Spec	GPT Image 2.5	Grok Imagine Image 2.0
Developer	OpenAI	xAI
Released	Sep 8, 2026	—
Tasks	Text to image, Image editing	Text to image, Image editing
Sizes	1K · 2K · 4K	1K · 2K
Edit inputs	Up to 16 images	Up to 3 images
Quality levels	low · medium · high · xhigh · max	low · medium
Aspect ratios	11 (1:1, 3:2, 2:3, 4:3, 3:4, 5:4…)	13 (1:1, 3:4, 4:3, 9:16, 16:9, 2:3…)
Starting price	$0.0066/image (1K · low)	$0.022/image (1K · low)
Below official price	up to 12%	up to 63%

Verdict

When to choose which

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

Choose GPT Image 2.5 for

Lower price: $0.0066/image vs $0.022/image at 1K (70% less).
Higher maximum resolution: 4K vs 2K.
Edits with up to 16 input images (vs 3).

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

Choose Grok Imagine Image 2.0 for

More aspect ratios: 13 vs 11.

Grok Imagine Image 2.0 at a glance

Leaderboard quality — A top text-to-image model
1K / 2K — Two size tiers
13 ratios — Including 9:19.5 phone
3 inputs — Image editing

Try both with the same prompt

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

POST /api/v1/run/openai/gpt-image-2.5/text-to-image
POST /api/v1/run/xai/grok-imagine-image/text-to-image

GPT Image 2.5 in Studio Grok Imagine Image 2.0 in Studio

FAQ

GPT Image 2.5 vs Grok Imagine Image 2.0 questions

GPT Image 2.5 is cheaper at 2 of 2 shared tiers. 1K: GPT Image 2.5 $0.0066/image, Grok Imagine Image 2.0 $0.022/image; 2K · low: GPT Image 2.5 $0.0118/image, Grok Imagine Image 2.0 $0.0528/image. Prices are live and billed per image.

GPT Image 2.5: up to 4K, edits with up to 16 input images. Grok Imagine Image 2.0: up to 2K, edits with up to 3 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 →

GPT Image 2.5 is developed by OpenAI; Grok Imagine Image 2.0 by xAI. Cheaper Gen. provides API access to both through official upstream endpoints and does not own either model. Trademarks belong to their respective owners.