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Seedream 4.5 Free: Precise Text-to-Image AI for Realistic Visuals | RunComfy

bytedance/seedream-4-5/text-to-image

Generate high-resolution, cinema-quality visuals entirely from text. Features advanced prompt understanding for detailed scenes and native support for 2K/4K outputs.

modelApiDoc_tableOfContents

modelApiDoc_nav1GetStartedmodelApiDoc_nav2AuthenticationmodelApiDoc_nav3ApiReferencemodelApiDoc_navSubmitRequestmodelApiDoc_navMonitorStatusmodelApiDoc_navRetrieveResultsmodelApiDoc_navCancelRequestmodelApiDoc_nav4FileInputsmodelApiDoc_navHostedFilemodelApiDoc_nav5SchemamodelApiDoc_navInputSchemamodelApiDoc_navOutputSchema

modelApiDoc_h2GetStarted

modelApiDoc_getStartedBeforeModelbytedance/seedream-4-5/text-to-imagemodelApiDoc_getStartedAfterModel modelApiDoc_getStartedMid modelApiDoc_schemaLinkmodelApiDoc_getStartedAfterSchema

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/bytedance/seedream-4-5/text-to-image \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A hyper-realistic street photograph of an old man walking alone on a quiet city street, captured with a Sony Alpha a9 II and Sony FE 200�?00mm f/5.6�?.3 G OSS lens. Shot in natural light, with ultra-detailed cinematic composition and muted, desaturated tones. The atmosphere is melancholic and introspective, evoking solitude and the passage of time. Styled like cinematic 35mm film photography, with soft depth of field, realistic textures, and emotional lighting that feels raw and human."
  }'

modelApiDoc_h2Authentication

modelApiDoc_authP1 YOUR_API_TOKEN modelApiDoc_authP2 modelApiDoc_profilemodelApiDoc_authP3 Authorization modelApiDoc_authP4 Authorization: Bearer $YOUR_API_TOKENmodelApiDoc_authP5

modelApiDoc_h3ApiReference

modelApiDoc_h3SubmitRequest

modelApiDoc_submitBody

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/bytedance/seedream-4-5/text-to-image \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A hyper-realistic street photograph of an old man walking alone on a quiet city street, captured with a Sony Alpha a9 II and Sony FE 200�?00mm f/5.6�?.3 G OSS lens. Shot in natural light, with ultra-detailed cinematic composition and muted, desaturated tones. The atmosphere is melancholic and introspective, evoking solitude and the passage of time. Styled like cinematic 35mm film photography, with soft depth of field, realistic textures, and emotional lighting that feels raw and human."
  }'

modelApiDoc_h3MonitorStatus

modelApiDoc_monitorBody

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

modelApiDoc_h3RetrieveResults

modelApiDoc_retrieveBody

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

modelApiDoc_h3CancelRequest

modelApiDoc_cancelBody

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

modelApiDoc_h2FileInputs

modelApiDoc_h3HostedFile

modelApiDoc_hostedFileBody

modelApiDoc_h2Schema

modelApiDoc_h3InputSchema

{
  "type": "object",
  "title": "modelApiDoc_navInputSchema",
  "required": [
    "prompt"
  ],
  "properties": {
    "prompt": {
      "title": "Prompt",
      "description": "The recommended length is no more than 600 English words. if the prompt is too long, the information may become scattered. The model might ignore details and only concentrate on the main points, resulting in a image with missing elements.",
      "type": "string",
      "default": "A hyper-realistic street photograph of an old man walking alone on a quiet city street, captured with a Sony Alpha a9 II and Sony FE 200�?00mm f/5.6�?.3 G OSS lens. Shot in natural light, with ultra-detailed cinematic composition and muted, desaturated tones. The atmosphere is melancholic and introspective, evoking solitude and the passage of time. Styled like cinematic 35mm film photography, with soft depth of field, realistic textures, and emotional lighting that feels raw and human."
    },
    "resolution": {
      "title": "Resolution",
      "description": "For 2K and 4K options, it will let the model determine the width and height. you should describe its aspect ratio, shape, or purpose in the prompt using natural language. For other options, you can choose the width and height you want.",
      "type": "string",
      "enum": [
        "2K",
        "4K",
        "2048x2048 (1:1)",
        "2304x1728 (4:3)",
        "1728x2304 (3:4)",
        "2560x1440 (16:9)",
        "1440x2560 (9:16)",
        "2496x1664 (3:2)",
        "1664x2496 (2:3)",
        "3024x1296 (21:9)",
        "4096x4096 (1:1)"
      ],
      "default": "2048x2048 (1:1)"
    }
  }
}

modelApiDoc_h3OutputSchema

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "modelApiDoc_outDescImage"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "modelApiDoc_outDescVideo"
      },
      "images": {
        "type": "array",
        "description": "modelApiDoc_outDescImages",
        "items": {
          "type": "string",
          "format": "uri"
        }
      },
      "videos": {
        "type": "array",
        "description": "modelApiDoc_outDescVideos",
        "items": {
          "type": "string",
          "format": "uri"
        }
      }
    }
  }
}
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