All models
ByteDance Image Medium Closed weights

Seedream 4.5

344 days since ByteDance announced it ·

Seedream 4.5 is a closed-weights image model from ByteDance, announced 3 Dec 2025.

Price
—
the lab’s list price
Parameters
—
not disclosed

No price on the lab’s own pages.

Our coverage

We haven’t written about Seedream 4.5 yet.

ByteDance · Medium · Seedream

closed weights
  1. Seedream 5.5 +341d
  2. Seedream 4.5

More from ByteDance

All models
  1. SeedRealtime
  2. Seedance 2.5
  3. Seed Audio 1.0
  4. Seedream 5.0 Pro
  5. Seed2.1 Pro
  6. Seeduplex
  7. Seedream 5.0 Lite
  8. Seedance 2.0

Facts last updated , from ByteDance’s own pages.