Which should you pick?
Seedream 4.0 and Luma Photon Flash start at the same 1 credits for a complete generation.
Seedream 4.0 supports more aspect ratios (9: 21:9, 16:9, 3:2, 4:3, 1:1, 3:4, 2:3, 9:16, auto), giving it more format flexibility.
What a job costs
Seedream 4.0
1 credit
It bills a flat rate per generation.
- Price1 credit
Luma Photon Flash
1 credit
It bills per megapixel of output.
- Price1 credit
All figures are Versely credits. Your plan's credit allowance is on the pricing page.
Spec comparison
| Spec | Seedream 4.0 | Luma Photon Flash |
|---|---|---|
| Provider | ByteDance | Luma |
| Cost per job | 1 credit | 1 credit |
| Billing | a flat rate per generation | per megapixel of output |
| Max resolution | 4K | 4K |
| Aspect ratios | 21:9, 16:9, 3:2, 4:3, 1:1, 3:4, 2:3, 9:16, auto | 1:1, 3:4, 4:3, 9:16, 16:9, 9:21, 21:9 |
| Durations | — | — |
| Frame rates | — | — |
| Qualities | 1K, 2K, 4K | — |
| Requires starting image | No | No |
| Accepts video input | No | No |
| Reference images | — | Up to 1 |
| Leaderboard | Unranked | #95 in text to image |
| Released | Sep 9, 2025 | Nov 25, 2024 |
What each one does that the other doesn't
Only Seedream 4.0
high resolution, 4k, bytedance
Only Luma Photon Flash
edit image, lightning fast, photorealistic, flash
Both list: text to image, text to image.
Leaderboard positions
Versely ranks each capability on its own leaderboard, so a position is only comparable between two models within the same row.
Seedream 4.0
Not on a Versely leaderboard yet.
Luma Photon Flash
- Text to image#95
Full Seedream 4.0 spec sheet →
ByteDance Seedream 4.0 text-to-image. High-resolution generation (up to 4K) with multi-image output and built-in prompt enhancement.
Full Luma Photon Flash spec sheet →
Luma's Photon Flash — the speed tier of the Photon image family. Near-instant photorealistic stills at the lowest credit tier in the catalog, ideal for high-volume ideation and thumbnails.
More comparisons
Frequently asked questions
Which is cheaper, Seedream 4.0 or Luma Photon Flash?+
Neither — both start at 1 credits for a complete generation on Versely.
What can Seedream 4.0 do that Luma Photon Flash can't, or vice versa?+
Only Seedream 4.0 lists high resolution, 4k, bytedance. Only Luma Photon Flash lists edit image, lightning fast, photorealistic, flash. Both list text to image, text to image.
How do Seedream 4.0 and Luma Photon Flash bill?+
Seedream 4.0 bills a flat rate per generation. Luma Photon Flash bills per megapixel of output. Both are charged in Versely credits.
Try both inside Versely
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