Image Bytedance

Seedream API

Use the Seedream API via RunAPI with a model skill, unified auth, and pay-as-you-go pricing.

runapi.ai
curl -X POST https://runapi.ai/api/v1/seedream/edit_image \
  -H "Authorization: Bearer $RUNAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "seedream-v4-text-to-image",
  "source_image_urls": [
    "https://cdn.runapi.ai/public/samples/image.jpg"
  ],
  "prompt": "Create a social media graphic for a coffee shop sale with the text '50% OFF' in bold, warm tones, 4K."
}'
import { SeedreamClient } from "@runapi.ai/seedream";

const client = new SeedreamClient();
const result = await client.editImage.run({
    model: "seedream-v4-text-to-image",
    source_image_urls: ["https://cdn.runapi.ai/public/samples/image.jpg"],
    prompt: "Create a social media graphic for a coffee shop sale with the text '50% OFF' in bold, warm tones, 4K.",
});
<?php

require __DIR__ . "/vendor/autoload.php";

use RunApi\Seedream\SeedreamClient;

$client = new SeedreamClient();
$result = $client->editImage->run([
        'model' => 'seedream-v4-text-to-image',
        'source_image_urls' => ['https://cdn.runapi.ai/public/samples/image.jpg'],
        'prompt' => 'Create a social media graphic for a coffee shop sale with the text \'50% OFF\' in bold, warm tones, 4K.',
]);
require "runapi/seedream"

client = RunApi::Seedream::Client.new
result = client.edit_image.run(
    model: "seedream-v4-text-to-image",
    source_image_urls: ["https://cdn.runapi.ai/public/samples/image.jpg"],
    prompt: "Create a social media graphic for a coffee shop sale with the text '50% OFF' in bold, warm tones, 4K."
)
npx skills add runapi-ai/seedream -g
# Claude Code
claude mcp add runapi -s user -- npx -y @runapi.ai/mcp

# Codex
codex plugin install runapi-mcp@agents

# Cursor / Windsurf / VS Code
npx @runapi.ai/mcp init cursor
@runapi.ai/seedream v1
OVERVIEW

About Seedream

Seedream is an image generation and editing model with strong typography rendering and up to 4K output resolution. It supports text-to-image and image editing workflows with fine-grained style control.

Provider
Bytedance
Modality
Image

Available Versions

Variant Billing Pricing
seedream-4.5-edit call $0.10 View →
seedream-4.5-text-to-image call $0.10 View →
seedream-5-lite-edit call $0.08 View →
seedream-5-lite-text-to-image call $0.08 View →
seedream-5-pro-edit call $0.17 View →
seedream-5-pro-layer-decomposition call $0.14 View →
seedream-5-pro-text-to-image call $0.11 View →
seedream-v4-edit call $0.08 View →
seedream-v4-text-to-image call $0.08 View →
PRICING

Seedream Pricing

Endpoint Resolution Duration Price
edit_image — — $0.10 / image

Prices shown for seedream-4.5-edit. Other variants retain their own endpoint pricing.

Agent integration

Run Seedream From an Agent

HOW IT WORKS

Get Started with Seedream

  1. Create an API key

    Sign up and generate an API key from the dashboard.

  2. Pick a version

    Choose the version that best matches your quality and cost requirements.

  3. Send a request

    Submit your prompt and parameters to the model's documented endpoint.

  4. Get your result

    Poll the task or set a webhook, then download the completed output.

CONTEXT

About Seedream on RunAPI

Seedream is optimized for typography and style control. Through RunAPI, all Seedream variants share one key and unified billing.

Provider
Bytedance
See all →
Modality
Image
Browse models →

Why Use Seedream Through RunAPI

One auth, every provider

A single RunAPI API key unlocks the whole model catalog across all providers. No separate accounts to create, no API keys to rotate per integration, and no credential management overhead. Add a new model to your app by changing one parameter.

Unified pricing & billing

Per-call pricing in USD, billed monthly into a single invoice. No subscription tiers, no minimum spend, and failed generations are never charged. The pricing page and check_pricing API show exact costs before you commit to a model.

Schema-first SDK

Typed schemas, parameter constraints, and setup notes are packaged in the model skill so your implementation starts from the right contract. The skill loads into Claude Code, Codex, Gemini CLI, Cursor, and VS Code — your agent knows the correct request shape before you write a line of code.

Seedream Questions

What is the maximum output resolution?

Up to 4K resolution for text-to-image. Image editing can target 1K, 2K, or 4K output on v4.

How accurate is text rendering in Seedream?

Seedream has strong typography support — it reliably renders text like headlines, logos, and labels within generated images, especially in v4.5 and v5.

What is the difference between text-to-image and edit modes?

Text-to-image generates from scratch. Edit mode accepts one or more source images plus a text instruction and applies targeted, instruction-guided edits while preserving the rest of the image.

Does Seedream 5 Lite use web search?

Yes — Seedream 5 Lite can perform real-time web search for time-sensitive prompts, generating images informed by current events and trends.

How fast is generation?

Seedream 4.5 generates in a few seconds. Seedream 5 Lite is faster.

Which variant should I start with?

Pick the cheapest variant that meets your quality bar. Most teams start on the fast variant and graduate to pro for production.

SIMILAR MODELS

Similar Image Models

Start generating with Seedream