Seedream 4.0 vs Seedream 4.5
Seedream 4.0 (ByteDance) vs Seedream 4.5 (ByteDance), compared on price, context, speed and Arabic support. Both run on thalam through one OpenAI-compatible API, so you can switch between them with a single model id change.
Specs side by side
| Spec | Seedream 4.0 | Seedream 4.5 |
|---|---|---|
| Provider | ByteDance | ByteDance |
| Type | Image | Image |
| Price | $0.030 / image | $0.030 / image |
| Speed | Fast | Fast |
| Arabic support | Partial | Partial |
Which should you choose?
- Seedream 4.0, best image deal in the catalog
- Seedream 4.5, refresh of 4.0, same anchor pricing, slightly better fidelity
One OpenAI-compatible endpoint, one bill. Switch between them with a single model id change, pay per use, credits never expire.
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FAQ
What's the difference between Seedream 4.0 and Seedream 4.5?
They are closely matched on the headline specs; the best choice depends on your workload. Both are available on thalam behind one OpenAI-compatible API.
Is Seedream 4.0 or Seedream 4.5 cheaper?
They are priced similarly ($0.030 / image vs $0.030 / image). On thalam you pay per use with no subscription, so you can A/B them on cost with no commitment.
Can I use both Seedream 4.0 and Seedream 4.5 with one API key?
Yes. thalam is OpenAI-compatible, so both models are reachable through the same endpoint. Switching between them is a one-line model id change, no code rewrite.