Seedream 4.5

ByteDance's upgraded image generation model with improved quality, text rendering, and image editing capabilities. Seedream 4.5 excels at detailed compositions and accurate text in images, making it ideal for marketing and creative content.

$0.04per image(~40 credits)

Text to Image“Overhead flat lay of a watchmaker's bench: a disassembled mechanical watch movement in the center with gears fanned out in a spiral, brass tweezers and a loupe at top right, a small green enamel dish of screws at bottom left. Worn oak surface, soft north window light from the left, fine dust visible, macro photograph, crisp focus, natural colors.”

Promptrequired

Input imagesoptional

Optional reference images to edit or compose from (up to 10). Leave empty for pure text-to-image.

Aspect Ratio

Aspect ratio of the generated image. 'auto' lets the model infer framing from your prompt and inputs.

Resolution

Output resolution tier: 2K or 4K. Same price at both tiers.

$0.04per image(~40 credits)

Output

Your result renders here.

Use Seedream 4.5 via the API

Generate with Seedream 4.5 from your own code. Async by design: submit a generation, get a run id back instantly, poll until it completes. Billed in credits at the best available provider price — $0.04 per image.

POST /api/v1/generate/seedream45Get your API key →

1 — Start a generation

curl -X POST https://app.scenetra.com/api/v1/generate/seedream45 \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"prompt":"a watercolor fox in falling snow, soft light","aspect_ratio":"1:1","resolution":"2K"}'

Response (202)

{
  "runId": "run_abc123",
  "status": "PENDING",
  "model": "seedream45",
  "estimatedCredits": 40,
  "statusUrl": "/api/v1/runs/run_abc123"
}

2 — Poll until COMPLETED (every 2-5 seconds)

curl https://app.scenetra.com/api/v1/runs/run_abc123 \
  -H "Authorization: Bearer YOUR_API_KEY"

Response

{
  "runId": "run_abc123",
  "status": "COMPLETED",
  "progress": { "completed": 1, "total": 1 },
  "outputs": [
    { "type": "image", "url": "https://images.scenetra.com/..." }
  ],
  "error": null,
  "estimatedCredits": 40
}

Request fields

Field	Type	Description	Default
prompt*	string	Describe the image to generate, or the edit to apply to the input images.	—
image_urls	string[] (https URLs)	Optional reference images to edit or compose from (up to 10). Leave empty for pure text-to-image.	—
aspect_ratio	string	Aspect ratio of the generated image. 'auto' lets the model infer framing from your prompt and inputs.auto · 21:9 · 16:9 · 3:2 · 4:3 · 1:1 · 3:4 · 2:3 · 9:16	1:1
resolution	string	Output resolution tier: 2K or 4K. Same price at both tiers.2K · 4K	2K
callbackUrl	string (https URL)	Optional. When the run finishes (completed or failed), we POST the final run status to this URL — same shape as the poll response, plus `model`, `params`, and `chargedCredits`. Best-effort; polling remains the source of truth.

Unknown fields are rejected with a helpful 400. Media fields take https URLs. There is no provider parameter — every run is routed to the cheapest capable provider automatically.

Good to know

Billing

Runs bill your account credits at provider cost with 0% markup. The submit response includes the credit estimate; failed generations are refunded automatically. Add ?dryRun=1 to get the estimate without running anything.

Errors

Errors are always { "error": { "code", "message" } } with stable codes: unauthorized, model_not_available, invalid_parameter, insufficient_credits, rate_limited. A failed run is not an HTTP error — poll responses report status: "FAILED" with the reason.

Parameters

Parameter	Type	Description	Default
Prompt*	text	Describe the image to generate, or the edit to apply to the input images.	—
Input Images	image upload	Optional reference images to edit or compose from (up to 10). Attaching any switches the run to edit mode.	—
Aspect Ratio	select	Aspect ratio of the generated image. Auto lets the model infer framing from your prompt and inputs.auto · 21:9 · 16:9 · 3:2 · 4:3 · 1:1 · 3:4 · 2:3 · 9:16	1:1
Resolution	select	Output resolution tier: 2K or 4K. Same price at both tiers.2K · 4K	2K

Pricing

$0.04 per image

Pay per generation — only pay for what you use.

$0.04

per image

$0.04

per image

Start creating with Seedream 4.5

Use Seedream 4.5 alongside 50+ other AI models in Scenetra's visual workflow editor. No setup required.

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