Mixer AI
GPT Image 2 vs Seedream 5.5: specs and price
GPT Image 2 — resolutions: 1K / 2K / 4K; input photos: up to 16.
When to choose GPT Image 2 and when Seedream 5.5
GPT Image 2
- Resolutions: 1K / 2K / 4K vs 1K / 1.5K / 2K for Seedream 5.5
- Input photos: up to 16 vs up to 10 for Seedream 5.5
- Transparent background: Yes vs No for Seedream 5.5
- Prompt limit: 20,000 characters vs 5,000 characters for Seedream 5.5
Seedream 5.5
- Aspect ratios: 8 vs 6 for GPT Image 2
Key differences
Specifications
| Spec | GPT Image 2 | Seedream 5.5 |
|---|---|---|
| Generation modes | from text / photo editing | from text / photo editing |
| Input photos | up to 16 | up to 10 |
| Transparent background | Yes | No |
| Resolutions | 1K / 2K / 4K | 1K / 1.5K / 2K |
| Aspect ratios | 9:16 / 16:9 / 1:1 / auto / 4:3 / 3:4 | 9:16 / 16:9 / 1:1 / 4:3 / 3:4 / 2:3 / 3:2 / 21:9 |
| Prompt limit | 20,000 characters | 5,000 characters |
| Price, 1 image · 1K | — coins | — coins |
Price at the same settings
What to compare visually
For a fair A/B test, use the same prompt, aspect ratio and references. Inspect more than overall style: object preservation, geometry, faces and hands, fine detail, text in the frame and unintended changes during editing.
What to inspect with GPT Image 2
Create an image from a brief or edit an existing one with plain-language instructions.
- Text or uploaded photos; choose 1, 2 or 4 results.
- 1K, 2K and 4K. Auto and transparent background require 1K; a 1:1 square is unavailable at 4K.
- Editing does not guarantee pixel-identical preservation of untouched areas.
- Compare faces, branding and fine lettering against the source at full size.
What to inspect with Seedream 5.5
Create and edit images at 1K, 1.5K and 2K with up to 10 input photos and eight aspect ratios.
- From text alone, or editing with 1–10 input photos.
- 1K, 1.5K and 2K; ratios 1:1, 4:3, 3:4, 16:9, 9:16, 2:3, 3:2 and 21:9.
- This model has no 4K size: the maximum is 2K.
- References do not guarantee exact text, logos or fine details, so check them in the result.
How to run a fair comparison
- Give both models one prompt, one aspect ratio and, for editing tests, the same source photo.
- Look at the small things: hands, small text, product edges and logos fail differently in every model.
- Generate at least three variants per model: one picture shows one seed, not the usual quality.
- Compare cost at the resolution you will actually publish, not at each model's cheapest setting.
Sources
Prices, availability and specifications come from the Mixer AI catalog. This is not an independent test: try both models on the same task before choosing.
What we compare
FAQ
Which is cheaper: GPT Image 2 or Seedream 5.5?
Price, 1 image · 1K: the prices of GPT Image 2 and Seedream 5.5 are in the comparison table and always match the current tariff. The total depends on your settings: the price of the chosen options is shown in the interface before you run.
How does GPT Image 2 differ from Seedream 5.5?
GPT Image 2 — resolutions: 1K / 2K / 4K; input photos: up to 16.
How should I compare GPT Image 2 and Seedream 5.5 fairly?
Give both models the same prompt, aspect ratio and source photo, generate three variants each and compare details: hands, text, object edges. Compare price at the resolution you will publish.
Are both models available in Mixer AI?
Yes. Both models are in the Mixer AI image catalog; the launch button on the page opens Canvas on a computer and the Studio on a phone. The page exists only for models in the current catalog.
Which model is better?
There is no single winner. First rule out the model that does not accept the inputs you need (references, editing) or the resolution you need, then compare results on your own task. The table highlights only measurable differences.