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Seedance 2 Fast Text to Video: AI Video Generator

SD 2 Text-to-Video (Fast) by ByteDance. Generates video from text at faster speeds with 4–15 second duration and 2K resolution. SD 2 Text-to-Video (Fast) generates video from text prompts using ByteDance's SD 2 model at faster speeds and lower cost. It produces videos with audio-visual sync, up to 2K resolution, and 4–15 second duration.

Interactive model controls

SD 2 Text-to-Video (Fast) by ByteDance. Generates video from text at faster speeds with 4–15 second duration and 2K resolution.

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Overview

About this model

SD 2 Text-to-Video (Fast) generates video from text prompts using ByteDance's SD 2 model at faster speeds and lower cost. It produces videos with audio-visual sync, up to 2K resolution, and 4–15 second duration.

1Rapid Prototyping: Quickly preview video concepts before committing to Pro quality.
2High Volume: Generate many video variations at scale with lower per-unit cost.
3Social Content: Create short-form video content efficiently.
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Pricing & Value

Cost analysis

muapiapp$0.15 per second (e.g. $0.75 for 5 seconds)

Pay per second of video generated.

Fal.ai$0.3024/sec (high) / $0.2419/sec (basic)

Fal.ai charges $0.3024/sec for high quality and $0.2419/sec for basic. muapiapp is 50% cheaper — Fast model ($0.15/sec) vs Fal.ai basic ($0.2419/sec).

Replicate$0.3024/sec (high) / $0.2419/sec (basic)

Replicate charges the same as Fal.ai — $0.3024/sec (high), $0.2419/sec (basic). muapiapp Fast at $0.15/sec is 50% cheaper than Replicate's basic rate.

** Competitor pricing is estimated based on similar model architectures and usage tiers.

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Technical Details

Configuration schema

Promptstring

Text description of the video to generate. Use @character:<id> to anchor the video to a Seedance 2 character — automatically switches to image-to-video mode.

Default ValueA cinematic shot of a futuristic city at night with neon lights reflecting on wet streets.
Aspect RatioEnum (6 options)

Output video aspect ratio.

Default Value16:9
Duration (seconds)int

Video duration in seconds.

Default Value5
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Implementation Guide

Developer documentation

How to Use SD 2 Text-to-Video (Fast)

  1. Write your prompt: Describe the scene clearly. The fast model responds well to concise, vivid descriptions.

  2. Set aspect ratio: Choose from 21:9, 16:9, 4:3, 1:1, 3:4, or 9:16.

  3. Set duration: Between 4 and 15 seconds.

  4. Submit and poll: Use the returned request_id to poll for results.

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Common Questions

Frequently asked

How does Fast compare to Pro quality?

The Fast model uses a lighter inference pass. Results are typically slightly lower in detail than Pro but are generated more quickly and at lower cost.

What aspect ratios are supported?

Six ratios: 21:9, 16:9, 4:3, 1:1, 3:4, and 9:16. Default is 16:9.

What duration can I generate?

Between 4 and 15 seconds. Default is 5 seconds.