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Favicon for bytedance

ByteDance: Seedance 1.5 Pro

Going away November 11, 2026

bytedance/seedance-1-5-pro

BenchmarksCompare

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 issues of sequential audio dubbing. Supports multi-language lip-sync (English, Mandarin, Japanese, Korean, Spanish, and more), cinematic camera control (pan, tilt, zoom, orbit), multi-character dialogue, and character consistency across shots. Produces clips from 4–12 seconds at up to 1080p. The number of tokens is given by (height of output video * width of output video * duration * 24) / 1024

Modalities
Price
from $0.02306/second
Released
Mar 23, 2026
BenchmarksCompare
PlaygroundProvidersPerformanceUptimeAppsActivityDocumentationFAQExplore

Playground

Providers

This model is hosted by one provider. OpenRouter forwards every request to it directly — no routing decisions to make.

Performance

Throughput is how fast the model writes (tokens per second — higher is better). Latency is total round-trip time (lower is better). TTFT is time-to-first-token — how long before you see anything appear (lower is better).

Uptime

Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.

Apps

Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.

Activity

Token volume and request traffic to this model over time.

API

Drop-in code to call this model. OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. The only thing that changes between models is the model slug below.

Not currently available through EU in-region routing. In-region routing docs

Documentation

Guides, cookbooks, blog posts, and tools for building with ByteDance: Seedance 1.5 Pro on OpenRouter.

  • Best Image-to-Video AI Models in 2026: Cost, Resolution, and ControlBlog post

Explore more models

AI Models with Vision: Multimodal LLMs for Image UnderstandingCollectionVideo Generation ModelsCollectionVideo Model RankingsRanking
End-to-end latency
$2.40$0.05184$1.20$0.0259235.65s
100.00%
End-to-end latency
35.65s

P50, best provider

Uptime (3d)The model was reachable. Request routed to a provider.
100.00%
Availability (3d)The model returned inference from any provider. Errors and empty responses count against it.
98.28%

Availability over the last 3 days

Last 72 hours
Availability 98.28%
3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability
98.62%

When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and provider routing options.

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Frequently asked questions

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 issues of sequential audio dubbing.

The Seedance 1.5 Pro documentation on OpenRouter includes the Best Image-to-Video AI Models in 2026: Cost, Resolution, and Control blog post. The quickstart covers API keys and your first request, and the API reference lists every parameter.

Seedance 1.5 Pro costs from $0.02306/second at 480p to $0.4666/second at 4K for Video (with audio), from $0.01153/second at 480p to $0.2333/second at 4K for Video (no audio), $2.40/M tokens for Video Tokens (with audio), and $1.20/M tokens for Video Tokens (no audio).

Seedance 1.5 Pro supports 4–12 second clips, can be steered with a first frame and last frame image, and produces a matching audio track.

Seedance 1.5 Pro accepts text and images as input and returns video.

Seedance 2.0 Mini, Seedance 2.5, Seedance 2.0 and 1 more are other video models from ByteDance.

Seedance 1.5 Pro was released on March 23, 2026.