Seedream 4.5 API — pricing & specs

Seedream 4.5 is a ByteDance model that generates images from text prompts. On KeepRouter, Seedream 4.5 costs $0.0400 per image, billed pay-as-you-go with no monthly fee. Call it through a compatible KeepRouter endpoint supported by its active route, with the model id seedream-4-5.

How pricing works for Seedream 4.5

Seedream 4.5 is an image model billed per image ($0.0400 per image) — the same regardless of prompt length. The published price is pay-as-you-go, with no monthly fee.

Calling Seedream 4.5 on KeepRouter

Point a compatible client at the supported KeepRouter endpoint and set the model to seedream-4-5. KeepRouter preserves the client-facing request shape while handling upstream routing or translation. Send image-generation requests to POST /v1/images/generations.

cURL

curl https://keeprouter.com/v1/images/generations \
  -H "Authorization: Bearer $KEEPROUTER_KEY" -H "Content-Type: application/json" \
  -d '{"model":"seedream-4-5","prompt":"a red bicycle on a beach"}'

Python

from openai import OpenAI
client = OpenAI(base_url="https://keeprouter.com/v1", api_key="$KEEPROUTER_KEY")
img = client.images.generate(model="seedream-4-5", prompt="a red bicycle on a beach")

JavaScript

const res = await fetch("https://keeprouter.com/v1/images/generations", {
  method: "POST",
  headers: { Authorization: "Bearer " + process.env.KEEPROUTER_KEY, "Content-Type": "application/json" },
  body: JSON.stringify({ model: "seedream-4-5", prompt: "a red bicycle on a beach" }),
});

Source and verification boundary

Official ByteDance website. KeepRouter's live catalog is authoritative for the customer price and enabled endpoint shown here; the maker remains authoritative for upstream model capabilities and limits.

Related models

• Seedream 5.0 Lite by ByteDance — $0.0350 per image
• Doubao 2.0 Pro by ByteDance — $1.60 per 1M input tokens and $8.00 per 1M output tokens
• Doubao 1.5 Lite by ByteDance — $0.1000 per 1M input tokens and $0.2000 per 1M output tokens
• Doubao 2.0 Mini by ByteDance — $0.1500 per 1M input tokens and $1.50 per 1M output tokens
• Doubao 1.5 Pro by ByteDance — $0.2500 per 1M input tokens and $0.6000 per 1M output tokens
• Qwen3.7 Max by Alibaba — $1.25 per 1M input tokens and $3.75 per 1M output tokens

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Catalog facts and prices last changed 2026-08-01.