Seedance 2.0 Fast Text-to-Video
Fast video generation from text prompts with native audio.
What it does
Seedance 2.0 Fast Text-to-Video, in practice.
Seedance 2.0 is a state-of-the-art multimodal generative AI model designed for synchronized video and audio content creation. Developed by ByteDance and integrated into the CapCut/Dreamina platform as of March 2026, this model family advances the field of generative multimedia by combining sophisticated diffusion transformer architectures with physics-informed world modeling for realistic motion and spatial consistency. Seedance 2.0’s significance lies in its Dual-Branch Diffusion Transformer (DB-DiT) architecture that jointly processes video and audio streams, enabling phoneme-level lip synchronization across multiple languages. Compared to previous iterations, it achieves substantially hig
- Dual-Branch Diffusion Transformer Architecture: Seedance 2.0 integrates separate yet synchronized diffusion branches for video and audio, enabling tight coupling between visual motion and sound generation. This architecture improves motion realism and audio-visual coherence beyond previous generative models.
- World Model with Physics Simulation: The model incorporates a physics-based world modeling approach that simulates realistic object motion and spatial consistency over time. This leads to naturalistic dynamics and stable scene composition across generated video sequences.
- Rich Multimodal Input Support: Seedance 2.0 accepts diverse input formats including text prompts, up to 9 images, and up to 3 video or audio clips of 15 seconds each. This flexibility allows nuanced content creation workflows combining static, dynamic, and auditory cues.
- Phoneme-Level Lip Synchronization: The native audio generation pipeline supports lip-sync at the phoneme granularity in 8+ languages, ensuring high fidelity mouth movements closely match generated speech or singing.
- High Usability and Efficiency: The model achieves an estimated 90% usable output rate compared to an industry average of approximately 20%, reducing post-processing overhead. Additionally, it delivers a 30% inference speed advantage over predecessor systems.
- API Variants for Different Use Cases: The Seedance 2.0 endpoint is geared toward high fidelity and cinematic visual effects suitable for final production, while the Seedance 2.0 Fast variant offers roughly 3 times faster generation and approximately 91% cost savings at $0.022 per second of output, ideal for rapid iteration and volume workflows.
Product photo workspace
This page is a model reference. The workspace supports white backgrounds, scene changes, packaging text edits and model try-on using Qwen Image Edit.
Parameters
What you can set.
| Parameter | What it does | Options |
|---|---|---|
prompt | Text prompt describing the desired video. Supports Chinese and English. Recommended length: Chinese < 500 characters, English < 1000 words. | |
duration | Video duration in seconds (4-15), or -1 for model to choose automatically. | -1 4 5 6 7 8 9 10 11 12 13 14 |
resolution | Video resolution. | 480p 720p 720p-SR 1080p-SR 1440p-SR |
ratio | Aspect ratio. 'adaptive' automatically selects based on prompt context. | 16:9 4:3 1:1 3:4 9:16 21:9 adaptive |
bitrate_mode | Output video bitrate mode. 'high' encodes at a higher bitrate for a crisper, larger file; 'standard' uses the normal bitrate. Does not affect token cost. | standard high |
generate_audio | Whether to generate synchronized audio (voice, sound effects, background music). | default True |
seed | Seed integer used to control the randomness of generated content. Value range: [-1, 2^32-1]. The default -1 means a random seed is used. The same seed with the same request produces similar results, but complete consistency is not guarantee | default -1 |
watermark | Whether to add a watermark. | default |
return_last_frame | Whether to return the last frame as a separate image. | default |
Sample prompt
The prompt behind the sample.
A man in an elegant suit running across a wide, lush meadow while holding a bouquet of flowers, tall grass flowing in the wind, golden sunlight illuminating the landscape, joyful and emotional moment, cinematic composition, shallow depth of field, ultra-realistic, 4K, slow-motion tracking shot.
duration: 5resolution: 720pratio: adaptivegenerate_audio: Truewatermark: return_last_frame: FAQ
Short answers.
How much does Seedance 2.0 Fast Text-to-Video cost?
List price starts at $0.041 per second of video at the base resolution; higher resolutions and longer durations cost more. An 8-second clip at the base tier is about $0.32. Per-use pricing, no subscription. Model prices are reference prices. The prompt workspace is free during the period shown on the homepage; no automatic charges.
What content policy applies to Seedance 2.0 Fast Text-to-Video?
ByteDance's standard content policy, plus this site's commercial-use rules: product, catalog and marketing work. Uploads are processed for your request only and are not used for training.
What does Seedance 2.0 Fast Text-to-Video take as input?
It is a text-to-video model. Fast video generation from text prompts with native audio.
How do I use Seedance 2.0 Fast Text-to-Video?
Write the shot the way you would brief a DP — subject, place, light, lens, one motion, ratio — then run it. Expect a clip with native audio in the seconds range. Iterate one variable per pass; rewrites of the whole prompt are what make motion drift. Register or sign in to edit product photos with Qwen Image Edit. Other models on this page are catalog references.
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