ByteDance AI Empire: Doubao, Seedream, Seedance

Watermark notice — Every image model on NovAI is served by a Chinese provider (Zhipu AI, ByteDance, Tencent) and burns a visible AI-generated label such as AI生成 into the corner of the output under China’s labelling rules — NovAI cannot switch it off. Video output varies by model: in our 4 August 2026 tests Seedance 2.0 and CogVideoX-Flash showed no visible label, while Hunyuan Video 1.5 is labelled. Text and chat models are not affected. Which models, and what it rules out →

ByteDance now rivals OpenAI with a complete multimodal AI stack. Here is how all three product lines work together.

From TikTok to the AI Trifecta

ByteDance has quietly built the most complete AI stack of any company outside the US. Three product lines cover all major generation modalities:

ProductModalityFlagship ModelKey Strength
DoubaoChat / TextSeed-2.0-Pro3.2T MoE, 256K context, GPT-4 class reasoning
SeedreamImageSeedream 4.54K output, multi-reference, portrait refinement
SeedanceVideoSeedance 2.04K, multi-modal input, native audio sync

Doubao: The Text Foundation

Doubao-Seed-2.0-Pro is a 3.2 trillion parameter MoE model rivaling GPT-4 in reasoning and coding. The Lite variant delivers 80% of Pro performance at 1/5 the cost. The Code variant specializes in programming tasks with unified pricing.

Seedream: Image Generation

Seedream 4.5 supports 4K output, multi-reference image synthesis (up to 5 reference images), and excels at portrait refinement and small-text rendering. Unlike Midjourney's Discord-based approach, Seedream is API-first and OpenAI-compatible.

Seedance: The Video Crown Jewel

Seedance 2.0 is the only major model offering 4K video with native audio generation. It accepts text, images, video clips, and audio as input -- a true multi-modal video engine. Hollywood studios are already using it for pre-visualization, reportedly shortening timelines by 3-4 weeks.

One API Key, All Three

# Chat
POST /v1/chat/completions {"model":"doubao-seed-2.0-pro"}

# Image
POST /v1/images/generations {"model":"doubao-seedream-4.5"}

# Video
POST /v1/video/generations {"model":"doubao-seedance-2.0"}

All three through one OpenAI-compatible endpoint. No separate accounts, no vendor lock-in.

Frequently Asked Questions

What is ByteDance's AI ecosystem?

ByteDance has three AI product lines: Doubao (text/chat), Seedream (image generation), and Seedance (video generation). All three are accessible through a single OpenAI-compatible API via NovAI.

Is Doubao as good as GPT-4?

Doubao-Seed-2.0-Pro is a 3.2 trillion parameter MoE model that rivals GPT-4 in reasoning and coding. The Lite variant delivers 80% of Pro performance at 1/5 the cost.

Can I access ByteDance AI models outside China?

Yes, through NovAI's API gateway. All ByteDance AI models (Doubao, Seedream, Seedance) are available with one API key at aiapi-pro.com. No Chinese phone number or Alipay needed.

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