BytePlus: Seedream 4.5
byteplus/seedream-4-5-251128
Access Seedream 4.5 from BytePlus using the Puter.js AI API.
Add to your app
Model Card
Seedream 4.5 is ByteDance's follow-up to Seedream 4.0, announced in December 2025 and available here through BytePlus's ModelArk API. It keeps the same unified generation-and-editing architecture and scales it up rather than introducing a new one.
BytePlus reports improvements in editing consistency, including better preservation of subject detail, lighting, and color tone, along with sharper small-text and facial rendering and steadier multi-image fusion across up to 10 reference images. 4K output is included at no extra charge over lower resolutions.
On Artificial Analysis's independent Text-to-Image Elo leaderboard, Seedream 4.5 scores 1,207, behind Seedream 4.0's 1,225 on that measure. It targets production use cases such as e-commerce product imagery, marketing campaigns, and game or film pre-production art where consistent editing matters more than one-shot generation.
Cost Per Image $0.04
per generation
Configuration N/A
resolution
Release Date Nov 28, 2025
Add Seedream 4.5 to your app
Use Seedream 4.5 in your app with the Puter.js AI API, no API keys or setup required.
// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';
puter.ai.txt2img("A serene mountain landscape at sunset", {
model: "byteplus/seedream-4-5-251128"
}).then(image => {
document.body.appendChild(image);
});
<html>
<body>
<script src="https://js.puter.com/v2/"></script>
<script>
puter.ai.txt2img("A serene mountain landscape at sunset", {
model: "byteplus/seedream-4-5-251128"
}).then(image => {
document.body.appendChild(image);
});
</script>
</body>
</html>
More AI Models From BytePlus
Dola Seed 2.1 Turbo
Dola Seed 2.1 Turbo is ByteDance's faster, lower-cost variant in the Seed 2.1 family, offered internationally through BytePlus's Model Ark platform. It accepts text, image, and video input, with a 256K context window and function calling for agent workflows. On ByteDance's own benchmarks against Claude Opus 4.7, GPT-5.5, and Gemini 3.1 Pro, Turbo scores 89 on VideoMME for long video understanding and 79.2 on OVOBench for streaming video, ahead of Gemini 3.1 Pro's 86.7 and 64.1. It scores 88.0 on BeyondAIME reasoning, above Seed 2.1 Pro's 87.0. On knowledge tests like SuperGPQA it trails GPT-5.5 and Gemini. These are vendor-reported figures, not independently verified. It suits high-volume API use such as video analysis, document processing, and agent pipelines, where cost and video handling matter more than peak coding scores.
ImageDola Seedream 5.0 Pro
Dola Seedream 5.0 Pro is ByteDance's Seedream 5.0 Pro image generation and editing model, offered here through BytePlus's ModelArk API under the "Dola" branding BytePlus uses across its hosted model lineup. It generates images as independently editable layers, separating subjects, text, and background so pieces can be repositioned or swapped after generation. It supports pixel-level editing through selection points, arrows, and annotation boxes, reads color codes and material specifications, and renders text across 14 or more languages including Arabic, Korean, Thai, French, Russian, and Japanese. On Artificial Analysis's independent Text-to-Image Elo leaderboard it scores 1,283, ranking 8th overall, ahead of Black Forest Labs' FLUX.2 Max (1,233) and just behind Google's Nano Banana Pro (1,299). It fits production teams that need layered, editable output and multilingual text rather than a single flattened image.
VideoDreamina Seedance 2.5
Dreamina Seedance 2.5 is ByteDance's newest Seedance video model, distributed under the Dreamina brand and hosted here through BytePlus. It follows Seedance 2.0, extending single-pass clips from 15 seconds to 30 seconds, with support for multi-round extension beyond that. Through this API it renders at 480p, 720p, or 1080p at 24fps, dropping the 4K tier that 2.0 offered. Reference input also grows. ByteDance says it can combine up to 50 assets in one generation call, including up to 30 images, 10 video clips, and 10 audio clips alongside a text prompt, plus native audio-video generation in a single pass and timestamp-level editing for adjusting specific segments of a clip. ByteDance also reports improved texture, lighting, and motion detail over 2.0. It suits the same production use cases as the 2.0 family, such as marketing clips and multi-shot sequences, now with longer single takes and more reference material to work from.
Frequently Asked Questions
You can access Seedream 4.5 by BytePlus through Puter.js AI API. Include the library in your web app or Node.js project and start making calls with just a few lines of JavaScript — no backend and no configuration required.
Seedream 4.5 is free to integrate using the Puter.js AI API. With the User-Pays Model, you can add AI to your app for $0, since users cover their own AI usage through their Puter account.
| Price | |
|---|---|
| Per image | $0.04 |
Seedream 4.5 was created by BytePlus and released on Nov 28, 2025.
Yes — the Seedream 4.5 API works with any JavaScript framework, Node.js, or plain HTML through Puter.js. Just include the library and start building. See the documentation for more details.
Add Seedream 4.5 to your app for free
Developers can integrate Seedream 4.5 for free using the Puter.js AI API.
With the User-Pays Model, each user covers their own AI usage instead of the developer.