ByteDance

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 plans
Premium

Highest cost level. A long conversation can quickly use up your included usage or your balance.

Capabilities

Context Length—
Max Output Tokens—
Inputtext, image
Outputvideo
Release DateMarch 23, 2026

Recommended Use Cases

Creative Writing

Strengths

  • Renders up to 1080p, resolution selectable per generation
  • Flexible 4 to 12 second durations across 480p, 720p and 1080p
  • Unified Dual-Branch Diffusion Transformer generates video and audio in a single pass
  • Audio can be turned off at generation time, for a silent render

Limitations

  • No 4K render path, resolution tops out at 1080p
  • Maximum duration of 12 seconds per generation

Frequently asked questions

Resources

This model may use your data for training

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