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# GPT Image 2.5 vs Seedream 5 Pro — Specs Compared | Clip Studio

> GPT Image 2.5 (ChatGPT Image 2.5) vs ByteDance Seedream 5 Pro: both edit from a source still. 4 ad sizes vs 10 aspect ratios at about 2.2–2.4 MP. Compare specs and try both online.

Canonical page: https://clipstudio.ai/ai-image-models/gpt-image-2-5-vs-seedream-5-pro

## Intent

Both generate and edit stills from one source image. ChatGPT Image 2.5 takes the four ad sizes; Seedream 5 Pro takes all ten Image Lab aspect ratios at about 2.2–2.4 megapixels.

## Spec table

| Spec | ChatGPT Image 2.5 | Seedream 5 Pro |
| --- | --- | --- |
| Provider | OpenAI | ByteDance |
| Modes | Text to image · Image to image | Text to image · Image to image |
| Edit from a still | Yes, one source still | Yes, one source still |
| Aspect ratios | 4: 9:16, 1:1, 4:5, 16:9 | 10: 21:9, 16:9, 3:2, 4:3, 5:4, 1:1, 4:5, 3:4, 2:3, 9:16 |
| Size in Image Lab | 1024 × 1024 at 1:1 | 1536 × 1536 at 1:1 |
| Output | Raster still | Raster still |
| Prompt length | Up to 8 KB | Up to 8 KB |
| Large source stills | No extra scaling | No extra scaling |
| Best for | Product shots and image-to-image edits. | High-detail stills and reference edits. |

## Which to pick

- Pick ChatGPT Image 2.5 for product shots and edits at 16:9, 1:1, 4:5, or 9:16.
- Pick Seedream 5 Pro for high-detail stills and reference edits, or any frame outside the four ad sizes, such as 21:9 or 2:3.

ChatGPT Image 2.5 and Seedream 5 Pro both run text-to-image and image-to-image from one source still. ChatGPT Image 2.5 is OpenAI’s default model and covers the four ad sizes. Seedream 5 Pro is ByteDance’s top Seedream 5 model and covers all ten Image Lab aspect ratios, at about 2.2–2.4 megapixels (1536 × 1536 at 1:1, 2048 × 1152 at 16:9). Choose ChatGPT Image 2.5 for ad-size product shots; choose Seedream 5 Pro for high-detail stills and unusual frames. Clip Studio does not publish a quality ranking between them.

## FAQs

### What sizes does each model make in Image Lab?

ChatGPT Image 2.5 makes the four ad sizes (16:9, 1:1, 4:5, 9:16). Seedream 5 Pro maps each of ten aspect ratios to about 2.2–2.4 megapixels, for example 1536 × 1536 at 1:1 and 2048 × 1152 at 16:9.

### Can both edit an existing image?

Yes. Attach one source still to run image-to-image on either model.

### How is Seedream 5 Pro different from Seedream 5 Flash?

Pro is the top Seedream 5 option and Flash is the faster one. Both generate and edit stills at the same listed aspect ratios.

### How are they priced?

ChatGPT Image 2.5 is priced by output size and Seedream 5 Pro by output image, so the gap depends on the aspect ratio. Both are included in every Clip Studio plan and use the same monthly generation allowance, and each setup is quoted in Image Lab before you generate. Plan details live on the pricing page.

### Are ChatGPT Image 2.5 and Seedream 5 Pro free?

No. Both run in Image Lab, which is included in every Clip Studio plan, and every plan opens every Image Lab model. Eligible new accounts get one free Topic Short, which is a separate studio.


## Related

- [ChatGPT Image 2.5](https://clipstudio.ai/ai-image-models/gpt-image-2-5.md)
- [Seedream 5 Pro](https://clipstudio.ai/ai-image-models/seedream-5-pro.md)
- [Image Lab](https://clipstudio.ai/image-lab.md)
- [All image models](https://clipstudio.ai/ai-image-models.md)
- [ChatGPT Image 2.5 vs ChatGPT Image 2.5 Sunburst](https://clipstudio.ai/ai-image-models/gpt-image-2-5-vs-gpt-image-2-5-sunburst.md)
- [Nano Banana 2.1 vs ChatGPT Image 2.5](https://clipstudio.ai/ai-image-models/nano-banana-2-1-vs-gpt-image-2-5.md)
- [Ideogram V4.5 vs ChatGPT Image 2.5 for text in images](https://clipstudio.ai/ai-image-models/ideogram-v4-5-vs-gpt-image-2-5.md)
- [Krea 3 vs FLUX 3 Image](https://clipstudio.ai/ai-image-models/krea-3-vs-flux-3-image.md)