Seedance 1.5 Pro
ByteDanceSpecialized
Vision
About this model
ByteDance's next-generation audio-visual generation model with a 4.5B parameter Dual-Branch Diffusion Transformer architecture. Seedance 1.5 Pro generates video and audio simultaneously in a single unified pass — eliminating the timing...
Performance Tier
Specialized
Seedance 1.5 Pro is a specialized model from ByteDance : built for a specific domain.
Domain-specific model. Optimized for a particular task such as code generation, image creation, or web search.
Pricing
This model is included in Elosia plansPremium
Highest cost level. A long conversation can quickly consume your monthly cap.
Capabilities
Context Length—
Max Output Tokens—
Inputtext, image
Outputvideo
Release DateMarch 23, 2026
Recommended Use Cases
Creative Writing
Strengths
- Supports up to 1080p output — the highest resolution in the Seedance lineup
- Flexible 4–12 second durations across 480p, 720p and 1080p
- Unified Dual-Branch Diffusion Transformer generates video and audio in a single pass
- Most affordable Seedance tier ($2.40 per million video tokens with audio, half without)
Limitations
- Older generation — motion realism below Seedance 2.0
- Shorter maximum duration than Seedance 2.0 (12s vs 15s)
Resources
This model may use your data for training
