Seedream 5.0 Pro t2i

Seedream 5.0 Pro t2i is ByteDance’s high-precision text-to-image workflow, available through the AnyFast API. Use model ID doubao-seedream-5-0-pro-260628.

For specific content requests, select the Special-Ns resource group.

Key capabilities

Text-to-image — Generate one image from a text prompt.
Native multilingual text — Generate text in languages such as Russian, Arabic, Filipino, Thai, Turkish, Korean, Malay, Spanish, Portuguese, Indonesian, French, German, Vietnamese, and Japanese.
Output control — Use size, response_format, output_format, and watermark to control the generated image.

Seedream 5.0 Pro does not support grouped image generation, web search, or streaming output. Do not rely on sequential_image_generation, sequential_image_generation_options, tools, or stream with this model.

Quick examples

curl https://www.anyfast.ai/v1/images/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao-seedream-5-0-pro-260628",
    "prompt": "A high-end product hero image for a smart speaker, precise lighting, clean editorial layout, multilingual label text in Japanese and English",
    "size": "2K",
    "output_format": "png",
    "watermark": false
  }'

import requests

response = requests.post(
    "https://www.anyfast.ai/v1/images/generations",
    headers={
        "Authorization": "Bearer YOUR_API_KEY",
        "Content-Type": "application/json",
    },
    json={
        "model": "doubao-seedream-5-0-pro-260628",
        "prompt": "A high-end product hero image for a smart speaker, precise lighting, clean editorial layout, multilingual label text in Japanese and English",
        "size": "2K",
        "output_format": "png",
        "watermark": False,
    },
)

print(response.json())

Parameters

Parameter	Type	Required	Description
`model`	string	Yes	Must be `doubao-seedream-5-0-pro-260628`
`prompt`	string	Yes	Text prompt for image generation or editing. Official guidance recommends keeping prompts concise enough that details do not get diluted.
`size`	string	No	Output size. Use `1K`, `2K`, or a pixel size such as `2048x1024`. Pixel sizes must satisfy the official total-pixel and aspect-ratio limits.
`response_format`	string	No	`url` or `b64_json`. Defaults to `url`. URLs are temporary and should be saved promptly.
`output_format`	string	No	`png` or `jpeg`. Defaults to `jpeg`.
`watermark`	boolean	No	Whether to add the AI-generated watermark. Official default is `true`; set `false` to disable it.
`optimize_prompt_options`	object	No	Prompt optimization options. Use `mode: "standard"`. Official documentation says fast mode is not supported for Seedream 5.0 Pro.

Size notes

Seedream 5.0 Pro supports two size styles:

Resolution tiers: 1K and 2K. Describe the aspect ratio in the prompt when using a tier.
Explicit pixels: widthxheight, such as 2048x1024. The official total pixel range is from 1280x720 to 2048x2048x1.1025, and the aspect ratio range is [1/16, 16].

API Reference

View the interactive API playground for Seedream 5.0 Pro t2i.

Getting started

Model Introduction

Resources

Seedream 5.0 Pro t2i

Key capabilities

Quick examples

Parameters

Size notes

API Reference

​Key capabilities

​Quick examples

​Parameters

​Size notes

API Reference

Key capabilities

Quick examples

Parameters

Size notes