WaveSpeedAI Seedream V4.5 Image Generation/Editing

Generate and edit images using ByteDance's Seedream V4.5 model via the WaveSpeed AI platform. Supports custom resolutions up to 4096x4096 with enhanced typography for sharp text rendering in posters and logos.

Authentication

export WAVESPEED_API_KEY="your-api-key"

Get your API key at wavespeed.ai/accesskey.

Quick Start

Text-to-Image

import wavespeed from 'wavespeed';

const output_url = (await wavespeed.run(
  "bytedance/seedream-v4.5",
  { prompt: "A minimalist coffee shop logo with clean typography" }
))["outputs"][0];

Image Editing

The images parameter accepts an array of image URLs (1-10 images). If you have local files, upload them first with wavespeed.upload() to get a URL.

import wavespeed from 'wavespeed';

// Upload a local image to get a URL
const imageUrl = await wavespeed.upload("/path/to/photo.png");

const output_url = (await wavespeed.run(
  "bytedance/seedream-v4.5/edit",
  {
    images: [imageUrl],
    prompt: "Add warm sunset lighting and lens flare"
  }
))["outputs"][0];

You can also pass existing image URLs directly:

const output_url = (await wavespeed.run(
  "bytedance/seedream-v4.5/edit",
  {
    images: ["https://example.com/photo.jpg"],
    prompt: "Add warm sunset lighting and lens flare"
  }
))["outputs"][0];

API Endpoints

Text-to-Image

Model ID: bytedance/seedream-v4.5

Generate images from text prompts with custom resolutions up to 4096x4096.

Parameters

Example

import wavespeed from 'wavespeed';

const output_url = (await wavespeed.run(
  "bytedance/seedream-v4.5",
  {
    prompt: "A movie poster for a sci-fi thriller with bold title text 'HORIZON' at the top",
    size: "2048*3072"
  }
))["outputs"][0];

Image Editing

Model ID: bytedance/seedream-v4.5/edit

Edit existing images using text prompts. Supports up to 10 input images. Preserves facial features, lighting, and color tone from input images.

Parameters

Example

import wavespeed from 'wavespeed';

const imageUrl = await wavespeed.upload("/path/to/portrait.png");