Seedance 2.0 Fast (T2V + I2V)
seedance-2.0-fastByteDance Seedance 2.0 Global Fast via RunningHub. A single model that routes between two upstream endpoints: text-to-video (pure prompt, optional Web Search prompt enhancement) and image-to-video (first frame + optional last frame for controlled transitions). 4-15s output, five resolution tiers from 480p to 4K, optional audio generation.
T2V + I2V in One Model
Omit the first frame for pure text-to-video; include it for image-to-video — same model, same pricing
5 Resolution Tiers
480p $0.12/s · 720p $0.24/s · 1080p $0.30/s · 2K $0.33/s · 4K $0.375/s
Web Search Boost (T2V)
Optional real-time-knowledge enhancement of the prompt before generation
Optional Last Frame (I2V)
Pass a second image to direct the ending of the animation (frame-to-frame interpolation)
Flexible Duration
4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15 seconds
Aspect Ratios
adaptive, 16:9, 4:3, 1:1, 3:4, 9:16, 21:9
Optional Audio Generation
Set generateAudio=true to render audio alongside the video
Generate Video
Render synced audio alongside the video
Enrich your prompt with real-time web knowledge before generation (T2V only)
Result
Generated video will appear here
Provide URLs and click Generate
About Seedance 2.0 Fast (T2V + I2V)
Seedance 2.0 Fast (T2V + I2V) is a Video Generation API provided by rh-seedance-2-fast. ByteDance Seedance 2.0 Global Fast via RunningHub. A single model that routes between two upstream endpoints: text-to-video (pure prompt, optional Web Search prompt enhancement) and image-to-video (first frame + optional last frame for controlled transitions). 4-15s output, five resolution tiers from 480p to 4K, optional audio generation. Through API Models platform, you can access this model via a unified API at prices significantly lower than official rates. Current pricing: 480p / s: $0.12, 720p / s: $0.24, 1080p / s: $0.3, 2K / s: $0.33, 4K / s: $0.375.
Key Features
- T2V + I2V in One Model -- Omit the first frame for pure text-to-video; include it for image-to-video — same model, same pricing
- 5 Resolution Tiers -- 480p $0.12/s · 720p $0.24/s · 1080p $0.30/s · 2K $0.33/s · 4K $0.375/s
- Web Search Boost (T2V) -- Optional real-time-knowledge enhancement of the prompt before generation
- Optional Last Frame (I2V) -- Pass a second image to direct the ending of the animation (frame-to-frame interpolation)
- Flexible Duration -- 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15 seconds
- Aspect Ratios -- adaptive, 16:9, 4:3, 1:1, 3:4, 9:16, 21:9
- Optional Audio Generation -- Set generateAudio=true to render audio alongside the video
Use Cases
Marketing Videos
Quickly generate brand promotion videos for ad campaigns and social media marketing.
Social Media Content
Create compelling short-form video content for platforms like TikTok, Instagram, and YouTube.
Product Demos
Generate product feature demonstrations and tutorials to improve user conversion.
Educational Content
Produce course explanations, knowledge explainers, and training videos at low cost.
Why API Models
- Unified API -- One API key to access all models, no need to register on multiple platforms
- Cost Savings -- 60-95% cheaper than official pricing, ideal for indie developers and startups
- Instant Access -- Start using immediately after signup, supports Stripe and Alipay payments
- Full Documentation -- Detailed API docs with code examples in cURL, Python, and Node.js
Frequently Asked Questions
How much does Seedance 2.0 Fast (T2V + I2V) cost?
Seedance 2.0 Fast (T2V + I2V) is available through API Models at: 480p / s: $0.12, 720p / s: $0.24, 1080p / s: $0.3, 2K / s: $0.33, 4K / s: $0.375. This is up to 95% cheaper than official pricing.
How to use Seedance 2.0 Fast (T2V + I2V) API?
Sign up at API Models, get your API key, and call our unified API endpoint. We provide detailed API documentation with code examples in cURL, Python, and Node.js.
What is the difference between API Models and the official rh-seedance-2-fast API?
API Models offers the same Seedance 2.0 Fast (T2V + I2V) model at 60-95% lower cost through our aggregation platform. We provide a unified API interface so you do not need separate accounts for each provider - one API key to access all models.
What payment methods are supported?
We support Stripe (Visa, Mastercard, and other international cards) and Alipay. Credits are available instantly after payment.