ChatGPT Image 2.5
Pick ChatGPT Image 2.5 for product shots and edits at 16:9, 1:1, 4:5, or 9:16.
Open ChatGPT Image 2.5 in Image LabHead-to-head · Image Lab
ChatGPT Image 2.5 vs Seedream 5 Pro
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.
Runs online, no installIncluded in plans from $19/moSpecs checked 25 October 2026 from the live Image Lab catalog
Catalog specs
Side by side in Image Lab.
Modes, edits, aspect ratios, size, and output come from the live Image Lab catalog, not from a ranked shoot-out.
Spec
ChatGPT Image 2.5
Seedream 5 Pro
Provider
ChatGPT Image 2.5
OpenAI
Seedream 5 Pro
ByteDance
Modes
ChatGPT Image 2.5
Text to image · Image to image
Seedream 5 Pro
Text to image · Image to image
Edit from a still
ChatGPT Image 2.5
Yes, one source still
Seedream 5 Pro
Yes, one source still
Aspect ratios
ChatGPT Image 2.5
4: 9:16, 1:1, 4:5, 16:9
Seedream 5 Pro
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
ChatGPT Image 2.5
1024 × 1024 at 1:1
Seedream 5 Pro
1536 × 1536 at 1:1
Output
ChatGPT Image 2.5
Raster still
Seedream 5 Pro
Raster still
Prompt length
ChatGPT Image 2.5
Up to 8 KB
Seedream 5 Pro
Up to 8 KB
Large source stills
ChatGPT Image 2.5
No extra scaling
Seedream 5 Pro
No extra scaling
Best for
ChatGPT Image 2.5
Product shots and image-to-image edits.
Seedream 5 Pro
High-detail stills and reference edits.
Which to pick
Which one should you use?
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.
Seedream 5 Pro
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.
Open Seedream 5 Pro in Image LabQuestions, answered
ChatGPT Image 2.5 vs Seedream 5 Pro FAQ
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.
More compares
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