Mixer AI › Knowledge Base › Comparison › GPT Image 2 vs GPT Image 2.5

GPT Image 2 vs GPT Image 2.5

Both versions accept up to 16 images and support 1K, 2K and 4K in Mixer AI. GPT Image 2.5 exposes more aspect options. In a direct test, a direct test placed Image 2, Flare and Sunburst side by side, which makes it possible to separate product facts from test-specific visual differences.

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Key differences

Both versions generate and edit images in Mixer AI and accept up to 16 input images.

GPT Image 2.5 currently exposes 13 aspect options in Mixer AI versus 6 for GPT Image 2.

In the side-by-side test, several results were close; the reviewer often preferred Sunburst for detail, but a complex composition showed worse body anatomy.

Specifications

Spec	GPT Image 2	GPT Image 2.5
Model variants	GPT Image 2	Flare / Sunburst
Generation modes	from text / photo editing	from text / photo editing
Input photos	up to 16	up to 16
Transparent background	Yes	No
Resolutions	1K / 2K / 4K	1K / 2K / 4K
Aspect ratios	9:16 / 16:9 / 1:1 / auto / 4:3 / 3:4	9:16 / 16:9 / 1:1 / auto / 3:2 / 2:3 / 4:3 / 3:4 / 21:9 / 27:16 / 16:27 / 9:8 / 8:9
Prompt limit	20,000 characters	20,000 characters
Price, 1 image · 1K	6 coins	6 coins

Observations from one side-by-side test

On a graphic poster, Image 2 already produced readable text; the reviewer saw a small clarity increase with 2.5 and another step with Sunburst.
After stronger art direction, the reviewer again preferred Sunburst but explicitly described the differences as very small and largely a matter of preference.
In a multi-panel scene, Sunburst looked best to the reviewer overall, yet its legs and body shapes were worse; preserving the text coincided with anatomy distortion in that result.

What repeats and what does not

The test does not support a blanket claim that 2.5 is always better. A narrower pattern is visible: some graphic-design outputs looked sharper, while the advantage was often small and did not remove local errors.

GPT Image 2 already produced readable text in the test; 2.5 does not make typography error-proof.
Across several images, the reviewer described the gap between the three outputs as minor.
Anatomy and small graphic elements still need inspection on either version.

What is actually available in Mixer AI

The video used another interface. For Mixer AI, the relevant facts are the controls exposed here: both versions edit images and support 1K–4K, while GPT Image 2.5 has a wider set of aspect options. External quality modes shown in the review are not treated as Mixer AI features.