GPT Image 1.5 vs Seedream 4.5
Both cost 13 Tools credits per 1K image at standard quality (about €0,06–€0,07), so the choice comes down to output rather than price. Seedream 4.5 goes up to 4K, GPT Image 1.5 tops out at 1K. Below: the full side-by-side, when to pick which, and both live price tables.
Side by side
| GPT Image 1.5 | Seedream 4.5 | |
|---|---|---|
| Brand | OpenAI | ByteDance |
| Type | Image model | Image model |
| Price per image | 13 credits · €0,06–€0,07 1K image at standard quality | 13 credits · €0,06–€0,07 image at 1K |
| 10 images | 130 credits · €0,56–€0,72 | 130 credits · €0,56–€0,72 |
| 100 images | 1,300 credits · €5,60–€7,21 | 1,300 credits · €5,60–€7,21 |
| Max resolution | 1K | 4K |
| Best for | Prompt-faithful images and quick edits | General image generation up to 4K |
| Model page | GPT Image 1.5 | Seedream 4.5 |
Which should you choose?
Choose GPT Image 1.5 if
- your work is mostly: prompt-faithful images and quick edits
Choose Seedream 4.5 if
- you need 4K output
- your typical job is general image generation up to 4K
Still unsure? Run one identical prompt through both. In Vyndexo that is two generations from the same screen and the same credit balance.
GPT Image 1.5 price table
| Model | Size | Low | Standard | High | Extra High | Max |
|---|---|---|---|---|---|---|
| GPT Image 1.5 | 1K 1024 × 1024 | 4 | 13 | 44 | — | — |
Seedream 4.5 price table
| Model | Small 768 px | 1K 1024 px | 1.5K 1536 px | 2K 2048 px | 3K 3072 px | 4K 4096 px |
|---|---|---|---|---|---|---|
| Seedream 4.5 | — | 13 | — | 17 | — | 26 |
Use either without a subscription
Both models are pay per use in Vyndexo: credit packs run from €4.99 for 900 credits to €999.99 for 230,000 credits, the € ranges on this page use the most and least expensive pack. See pricing, or the model pages for GPT Image 1.5 and Seedream 4.5.
Frequently asked questions
- Which is cheaper, GPT Image 1.5 or Seedream 4.5?
- Both cost 13 Tools credits per 1K image at standard quality (about €0,06–€0,07), so the choice comes down to output rather than price. Prices are the live Vyndexo table and depend only on which credit pack you buy.
- Which gives better quality, GPT Image 1.5 or Seedream 4.5?
- Seedream 4.5 offers the higher maximum resolution (4K). Quality also depends on the job: GPT Image 1.5 is best for prompt-faithful images and quick edits, Seedream 4.5 for general image generation up to 4K. The fastest way to decide is to run the same prompt through both, which Vyndexo lets you do from one account.
- Can I use both GPT Image 1.5 and Seedream 4.5 in Vyndexo?
- Yes. Both run inside the same Vyndexo workspace with one credit balance, so you can switch per generation. You do not need a OpenAI or ByteDance account or subscription.
- Do credits expire if I only use GPT Image 1.5 occasionally?
- No. Tools credits never expire, there is no monthly fee, and failed generations are not charged.