Project AURIONAI Use-Cases Research & Innovation
image generation

Seedream 4.5

ByteDance Seed image generation and editing model with better multi-image editing, reference consistency and dense text rendering than Seedream 4.0.

ByteDanceByteDanceChinaSeedreamFamily
ByteDance
Levelmodel
Classimage generation
Parametersnot in the notes
Contextnot in the notes
ReleasedDec 2025
Opennessproprietary
Runs onnot in the notes
Statusactive

Benchmark Results

independent
Artificial Analysis Text-to-Image Arena AA-Image-T2I v2.0generative media
independent
1,023 +-9; 95% interval 1014 to 1032
5009001,300

Score in Elo; the axis starts at 500, as Elo has no zero. Higher is better.

rank 27, AA Text-to-Image leaderboard, overall11 Oct 2026 artificialanalysis.ai
Where this comes from
Every score names who ran it: vendor-reported, maintainer-run or independent. A rank is shown with the population it was ranked in (gap rule 3).

R&D Topics

Text-to-image foundation models (diffusion and flow transformers)produced byInstruction-based image editing and inpaintingproduced by

Identity

Developer
ByteDance
Family
Seedream
Released
Dec 2025 sourcessecondary report
Weights published
–
Record checked
11 Oct 2026
Where this comes from
Developer and dates from the research notes. Release date is the vendor's public announcement; weights date is when open weights were published.

Architecture and Size

Architecture
not in the notes
Total parameters
– sources
Active parameters
–
Checkpoint parameters
–
Context length
not in the notes
Input
text, image
Output
image
Where this comes from
Parameter counts as the developer states them. Where the checkpoint holds a different total, both are shown (register A16).

Openness and Access

Openness
proprietary
Licence
Proprietary sources
Access routes
API
Where this comes from
The licence file governs over registry tags and aggregator labels.

Deployment

Runs on
not in the notes
Footprint
not in the notes
Runtimes
not in the notes
Where this comes from
Deployment tiers and runtimes as named in the notes. Footprint is the notes' figure, not a measurement by AURION.

Indonesia

Indonesian support
not stated
Regional languages
not in the notes
Jakarta hosting
unknown
Languages
not in the notes
Where this comes from
Indonesia fields are carried on every model; unknown is an allowed value.

Lineage

The notes record no lineage for this model.

Industry Use Cases

No industry use case links this model.

Sources

  1. seed.bytedance.com/en/seedream4_5 https://seed.bytedance.com/en/seedream4_5
  2. artificialanalysis.ai/image/leaderboard/text-to-image https://artificialanalysis.ai/image/leaderboard/text-to-image
  3. artificialanalysis.ai/image/model-families/Seedream https://artificialanalysis.ai/image/model-families/Seedream

To cite this page: Project AURION, AI Use-Cases Research & Innovation, "Seedream 4.5", https://aurion.semai.id/models/bytedance-seedream-4-5/, records of October 2026.