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Seedream 4.0

Seedream 4.0 — AI Illustration & Creative Generator

  • ByteDance Seedream 4.0: illustration-first engine with 1K, 2K, and 4K tiers.
  • Text-to-image, image-to-image, editing, and optional sequential multi-image output.
  • Reference guide on FreeMake.cc — compare with Seedream 4.5 and 5.0 Lite before you create.
Compare Seedream models
What is Seedream 4.0?Seedream 4.0 use casesHow Seedream 4.0 worksSeedream 4.0 vs other Seedream & AI modelsSeedream 4.0 FAQ

What is Seedream 4.0?

Seedream 4.0 (API IDs such as `doubao-seedance-4-0`) is the prior generation of the Seedream creative line on APIMart. It supports nine aspect ratios including 21:9, up to 15 generated images per request, and sequential generation when reference images are provided — a solid choice for illustrated campaigns before upgrading to 4.5 or 5.0 Lite.

Creative-first

Optimized for illustrated aesthetics rather than camera realism.

Up to 4K

1K / 2K / 4K resolution tiers with detailed pixel tables per ratio.

15-image batches

Generate up to 15 images; references + n must stay ≤ 15 total.

Sequential mode

With image_urls, auto sequential can output themed series for storyboards.

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Seedream 4.0 use cases

When you need proven 4.x illustration power with 4K single frames.

  • Anime & fan art

    Character scenes and promotional stills in cel-shaded styles.

  • Comics & covers

    4K cover art and panel backgrounds with strong color.

  • Game concepts

    NPC portraits, props, and environment explorations.

  • Social series

    Sequential outputs for seasonal or episodic content.

How Seedream 4.0 works

APIMart async API — overview for creators researching models.

  1. Study the specs

    Check resolution, ratio, and whether you need references or sequential mode.

  2. Write style prompts

    Include medium (anime, watercolor), character, palette, and mood.

  3. Plan references

    Up to 15 combined references + outputs; use image_urls for consistency.

  4. Create on FreeMake.cc

    Use Seedream 4.5/5 Lite in our generator when available, or read comparisons below.

Seedream 4.0 vs other Seedream & AI models

Pick the generation that matches resolution and workflow needs.

ModelBest for
Seedream 4.0 (this page)
4K illustration, 15-image batches, sequential with references.
Seedream 4.5
Refined 4.x default on FreeMake.cc with mature anime/illustration tuning.
Seedream 5.0 Lite
Newer line with 3K and lighter sequential workflows.
GPT Image 2
Photoreal marketing and English text in images.
Models hubSee pricing & credits

Seedream 4.0 FAQ

Doubao Seedream 4.0 capabilities and comparisons.

  1. Seedream 4.0 vs 4.5?

    4.5 is the newer tuned 4.x release; 4.0 remains useful for 4K illustration batches and legacy pipelines.

  2. Sequential generation rules?

    Requires image_urls; pure text-to-image cannot output multiple sequential frames.

  3. Max images per request?

    n from 1–15; total references + outputs must be ≤ 15.

  4. Supported resolutions?

    1K, 2K, and 4K with ratio-specific pixel maps in APIMart docs.

  5. On FreeMake.cc generator?

    4.5 and 5 Lite may appear in the workspace; this page documents 4.0 regardless.

  6. Chinese prompts?

    Supported; Qwen is still best for hanzi inside images.

  7. Commercial use?

    Review Terms of Service and APIMart billing for commercial projects.

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Seedream 4.0 Free — AI Illustration Generator Guide