Veo 3 API

Runway API

Seedance API

Kling API

Runway Aleph

Wan 2.2

AI Video API

Nano Banana API

Seedream API

4o Image API

Flux.1 Kontext API

Midjourney API

Imagen 4

Ideogram V3

Ideogram Character

Qwen Image Edit

AI Image API

Suno API

API Market

Document

Veo 3

Suno

Support

Updates

示例 1

示例 2

示例 3

Seedream 4.0 API Free Online Test

Seedream 4.0 is Bytedance’s next-generation image creation model, combining text-to-image generation and precise image editing within a unified architecture. The Seedream 4.0 API supports fast text-to-image generation, accurate editing, and consistent batch outputs, making it a powerful solution for creative and professional use.

Bytedance Seedream 4.0 API Introduction

What is Bytedance Seedream 4.0

Seedream 4.0 Text to Image API turns simple prompts into high-quality visuals in seconds. On Kie.ai, you can generate 2K images quickly, making it ideal for rapid prototyping, creative content, and marketing assets.

Seedream 4.0 Text to Image API for Fast Generation

With Seedream 4.0 Image-to-Image API, you can upload references and produce consistent outputs across multiple images. Kie.ai ensures Seedream AI API maintains style, composition, and character details, which is critical for brand and design projects.

Seedream 4.0 Image-to-Image API for Consistent Results

Seedream 4.0 Image Editing API allows fine adjustments to objects, backgrounds, colors, and structures. On Kie.ai, you can test this editing power to refine details, swap elements, or create polished visuals that align with professional workflows.

Seedream 4.0 Image Editing API for Precise Control

What Seedream 4.0 API Does Kie AI Support

Kie.ai gives you access to the full power of Seedream 4.0 API, designed to handle both creative exploration and professional workflows. With faster speed, higher resolution, and deeper intent understanding, Seedream AI API transforms ideas into production-ready visuals.

With Seedream 4.0 Image Editing API, simple natural language prompts can add, remove, or replace objects. This enables commercial design, artistic creation, and playful edits with accuracy and control.

Precise Instruction Editing

Seedream 4.0 API maintains identity and detail across styles — from illustration to 3D or photography. It preserves both character traits and image details, avoiding the “AI over-processed” look for natural, lossless editing.

Strong Feature Preservation

Seedream AI API goes beyond literal prompts with advanced reasoning. It interprets vague ideas, transforms abstract concepts into concrete visuals, adapts proportions automatically, and even simulates complex scenarios with expert-level knowledge.

Deep Intent Understanding

Seedream 4.0 API supports multiple reference images in one request, enabling composition, transfer, replacement, or derivative editing. It can also generate multiple related outputs at once, making it ideal for storyboards, concept series, or creative brainstorming.

Multi-Image Input and Output

Built on Bytedance’s optimized architecture, Seedream 4.0 Text to Image API produces 2K images in under 1.8 seconds and supports up to 4K resolution. This gives creators both speed for iteration and clarity for post-production.

Ultra-Fast and Ultra-HD Generation

Key Features of Seedream 4.0 API

Getting started with Bytedance Seedream 4.0 API on Kie.ai is simple. Follow these three steps to explore text-to-image, image-to-image, and editing features without setup.

Visit Kie.ai and request a free Seedream AI API key. This unlocks access to Seedream AI API directly in the online playground.

Step 1: Get Your Seedream AI API Key

Select Text to Image or Image to Image (Edit) API. You can enter a text prompt, upload reference images, or combine both.

Step 2: Choose Your Task Type

Click Generate to produce results instantly. Test 2K images, adjust prompts, or try batch outputs to explore the full power of Bytedance Seedream 4 API.

Step 3: Generate and Refine

How to Test Bytedance Seedream 4 API Free Online on Kie.ai

With Seedream 4.0 API, designers can quickly transform ideas into high-quality drafts. From illustrations to 3D prototypes, the Bytedance Seedream 4.0 API helps speed up creative workflows while preserving style and detail.

Creative Design with Seedream AI API

Marketers can use Seedream4 API to produce ads, banners, and product visuals instantly. The Seedream AI API ensures brand consistency while saving time and costs in large-scale campaigns.

Marketing Asset Generation using Seedream4 API

Film Production with Bytedance Seedream 4.0 API

From AI-generated selfies to creative memes, the Seedream4 API powers engaging social experiences. Users can explore fun edits, character swaps, and interactive visuals, making the Seedream AI API a trend-ready tool for community and entertainment.

Social Interaction Powered by Seedream AI API

Use Cases of Seedream 4.0 API

Kie.ai lets you try Bytedance Seedream 4.0 API directly in the browser, no setup required. Developers can explore text-to-image, image-to-image, and editing features instantly.

Free Online Testing of Seedream 4.0 API

Kie AI provides clear and flexible pricing for Seedream4 API. Developers can access the full power of Seedream AI API without heavy costs, making it practical for both startups and large teams.

Affordable Pricing for Seedream4 API

Kie AI is more than just Seedream AI API. Our platform also offers video, image, and music APIs, allowing developers to combine them into flexible workflows. This makes Kie AI a one-stop solution for multi-modal AI creation.

Multiple APIs Beyond Seedream AI API

Your one-stop platform for Seedream AI API, video, image, and music APIs

Why Kie AI is the Best Platform for Bytedance Seedream 4.0 API

Access Bytedance Seedream 4.0 API free online with Kie AI. Try Seedream 4.0 Text to Image API, Image-to-Image API, and Image Editing API. Compare with Google NanoBanana API and build multi-modal AI workflows.