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ByteDance Seed — the Seedream 4.5 upgrade to Seedream 4.0, later followed by the Seedream 5.0 family

Seedream 4.5

ByteDance's Seedream 4.5 in your browser: posters, product shots and multi-panel layouts with clean typography, plus edits with up to 10 reference images, at 2K or 4K — no API key.

Focus
Typography and dense text, poster and logo layouts, brand visuals, consistent multi-image edits
Editing
Edits one or several input images while keeping facial features, lighting and colour tone, per ByteDance
Resolution
2K and 4K only — the model rejects anything under about 2560×1440 pixels
On Kenerate
kenerate/seedream-v4.5 — text to image and edit with up to 10 references, 8 sizes at 2K and 5 at 4K
Licence
Closed model; images you generate on Kenerate follow Kenerate's terms of service
Try
  • Seedream 4.5
  • BLUE NOTE NIGHTS jazz poster — Seedream 4.5 output
  • LUMEN SERUM product shot — Seedream 4.5 output
  • Potter at the wheel — Seedream 4.5 output
  • Robot gardener comic strip — Seedream 4.5 output
  • Real outputs
  • Official sources
  • Free to start
  • No watermark

Updated by the

What is Seedream 4.5?

Updated

What is Seedream 4.5?

Seedream 4.5 is ByteDance's image generation and editing model, released in December 2025 as the upgrade to Seedream 4.0, with sharper typography, dense small text and poster layouts. It renders at 2K to 4K and edits from several input images while keeping faces, light and colour. On Kenerate AI it costs 12 credits per image at any size, takes up to 10 reference images and offers 13 sizes up to 4096×4096.

Key facts

Official name
Seedream 4.5
Model ID
bytedance/seedream-4.5 (BytePlus: doubao-seedream-4-5-251128)
Maker
ByteDance Seed
Released
December 2025
Abilities
Text to image · multi-image editing
Output
2K to 4K
References
Up to 10
Sizes
13 presets, 2048×2048 to 4096×4096
Weights
Closed (API only)

Gallery

Seedream 4.5 examples

Real outputs made on Kenerate. Open any image to copy its prompt and run it yourself.

Models

Seedream 4.5 on Kenerate

Every version in the generator, and what each is good at.

  • Seedream 4.5 title card — a bold 4K poster-style photo illustration of a surfer inside a giant turquoise wave

    ByteDance

    Seedream 4.5

    Reference images
    Up to 10
    Output
    2K–4K

    Best for

    This model — typography and posters

    Open Seedream 4.5
  • Seedream 5.0 Pro title card — a gallery-worthy photoreal portrait of a fictional adult woman with freckles in golden-hour light

    ByteDance

    Seedream 5.0 Pro

    Reference images
    Up to 10
    Output
    1K–2K

    Best for

    Newest flagship, best detail

    Open Seedream 5.0 Pro
  • Seedream 5.0 Lite title card — a crisp 4K photoreal alpine lake landscape with mirror reflections and snow peaks

    ByteDance

    Seedream 5.0 Lite

    Reference images
    Up to 10
    Output
    2K–4K

    Best for

    Newer, cheaper 4K

    Open Seedream 5.0 Lite
  • Seedream 5.0 Flash title card — a fast

    ByteDance

    Seedream 5.0 Flash

    Reference images
    Up to 10
    Output
    1K–2K

    Best for

    Fast drafts

    Open Seedream 5.0 Flash
  • Seedream V4 title card — a layout-aware multi-panel poster

    ByteDance

    Seedream V4

    Reference images
    Up to 10
    Output
    1K–4K

    Best for

    Previous version, 1K drafts

    Open Seedream V4

From our tests

Strengths and limits

Good at

  • Text came out right first try: “BLUE NOTE NIGHTS” and the small “AUG 14 · RIVERSIDE PARK” line on the poster, and the “LUMEN SERUM” label.
  • Clean poster layouts — a centred subject, a headline and a footer line landed where the prompt put them.
  • The same robot character held its shape and colours across all four comic panels.
  • Natural photo detail at 2K: clay on the potter's hands and apron, warm window light, believable depth of field.

Limits

  • 2K minimum: there are no cheap 1K drafts — use Seedream 5.0 Flash or Seedream V4 for quick tests.
  • On Kenerate, Seedream 5.0 Lite also does 2K–4K and costs less (10.5 credits); 4.5 is worth it mainly for type-heavy layouts.
  • Not on Kenerate's free plan — it is a paid model (12 credits per image).
  • Small storytelling slips happen: in our comic, panel one already showed a sprout next to the seed being planted.

How to

How to use Seedream 4.5 on Kenerate

  1. Step 1

    Open the model

    Go to /app/image and pick Seedream 4.5 (the button on this page selects it for you). Sign in free to get started.

  2. Step 2

    Write the prompt

    Describe layout, subject, style and light in plain sentences. Put every on-image word in quotes and say where it goes.

  3. Step 3

    Pick a size

    Choose one of 8 sizes at 2K or 5 at 4K — square, portrait, story, widescreen, poster or photo. The price is the same.

  4. Step 4

    Edit with references

    Upload up to 10 images and describe the change and what must stay — logo, face, product or colours.

1Describe the scene2Or start from an image3Pick a video model4Set ratio and length, then Create5Watch and download
Kenerate AI Video Studio in Text to Video mode with a lighthouse scene prompt typed in

Open Video Studio in Text to Video mode and write the shot — subject, action, camera move and light.

1 / 5 · Describe the scene

Watch the tour · 1:23

Prompts, styles, references, edit, Arena & chat

Chapters

FAQ

Seedream 4.5 questions

What is Seedream 4.5?

Seedream 4.5 is ByteDance Seed's image generation and editing model, released in December 2025 as the upgrade to Seedream 4.0. ByteDance says it improves typography, dense small text, poster and logo layouts, and keeps faces, lighting and colour tone when editing. It renders at 2K to 4K and is a closed model, available through APIs and apps such as Kenerate AI.

Link to this answer

How do I use Seedream 4.5 online?

Open Kenerate AI's image studio, pick Seedream 4.5, write a prompt and choose a size. It runs in the browser with no API key or install. Each image costs 12 credits at any size, from 2048×2048 up to 4096×4096, and you can upload up to 10 reference images to edit or keep a product, logo or character consistent.

Link to this answer

Is Seedream 4.5 free?

Not on Kenerate: Seedream 4.5 is a paid model at 12 credits per image, bought as one-time credit packs (no subscription required). The free plan covers models such as Flux 2 Dev, Flux 2 Klein and Qwen Image 2.0. Other sites list Seedream 4.5 API prices around $0.036–$0.04 per image.

Link to this answer

What is the difference between Seedream 4.5 and Seedream 4.0?

Seedream 4.5 is the newer of the two. ByteDance reports better prompt adherence, alignment and aesthetics on its internal MagicBench benchmark, plus stronger typography and small-text rendering. On Kenerate, 4.5 renders 2K–4K for 12 credits, while Seedream V4 also offers 1K sizes and costs 8.1 credits.

Link to this answer

Seedream 4.5 or Seedream 5.0 — which should I use?

For most new work, try the 5.0 family first: Seedream 5.0 Pro gives the most detail and the best edits, and 5.0 Lite renders 2K–4K for 10.5 credits. Seedream 4.5 is still a good choice for posters, labels and multi-panel layouts where exact text matters, and for keeping results consistent with earlier 4.5 projects.

Link to this answer

How good is Seedream 4.5 at text in images?

Strong in our tests. A jazz poster with a large headline and a small date line, and a product label reading “LUMEN SERUM”, both came out spelled correctly on the first try. Put the exact words in quotes and say where they go — top, bottom, on the label.

Link to this answer

How many reference images does Seedream 4.5 take?

Up to 10 on Kenerate. Some API providers list up to 14. Upload a product, a logo, a face or a style reference and describe what should change and what must stay; an edit costs the same 12 credits as a new image.

Link to this answer

What resolutions does Seedream 4.5 support?

Only 2K and 4K — the model rejects images under roughly 2560×1440 pixels. On Kenerate that means 8 sizes at 2K (square, 3:4, 4:3, 9:16, 16:9, 2:3, 3:2, 21:9) and 5 at 4K, up to 4096×4096. The price is 12 credits at every size.

Link to this answer

Can I use Seedream 4.5 images commercially?

Images you generate on Kenerate follow Kenerate's terms of service. Seedream 4.5 itself is a closed ByteDance model with no downloadable weights, so there is no separate model licence to accept. Check trademarks and likeness rights for anything you put in a poster or ad.

Link to this answer

In depth

Seedream 4.5, in depth

Background, how to prompt it, and when to pick something else.

What changed from Seedream 4.0

ByteDance describes Seedream 4.5 as an overall scale-up of Seedream 4.0, with better typography and dense small-text rendering, and editing that keeps a reference's face, lighting and colour tone [1]. Its own MagicBench comparison reports gains in prompt adherence, alignment and aesthetics, but publishes no numbers in text, so we don't quote any.

  • Posters, logos and brand visuals — the use cases ByteDance highlights.
  • Multi-image editing — pick out one element from several inputs and change material, colour or text.
  • 2K–4K output only, with no 1K draft size [2].

Keep going

More models

By Last updated and reviewed

We run these models in the Kenerate generator. Model facts come from the makers' own pages; specs and limits were checked against our code; the examples are our own outputs.

Sources: Seedream 4.5 — ByteDance Seed · Seedream 4.5 guides — Runware docs · Seedream 4.5 on Atlas Cloud

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