Bytedance

Seedance 1.5 pro

Video

First audio+video in one pass; lip-sync, multilingual dialogue

from $0.290 / second Seedance 1.5 pro API reference →
Model health Insufficient data
curl -X POST https://runapi.ai/api/v1/seedance/text_to_video \
  -H "Authorization: Bearer $RUNAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "seedance-1.5-pro",
  "prompt": "Generate a 10-second product reveal video: a smartphone emerges from smoke with cinematic lighting and ambient bass."
}'
https://runapi.ai 1 endpoint
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Model
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Specifications

Technical details

Provider Bytedance
Model ID seedance-1.5-pro
Modality Video
Task types Asynchronous
API endpoint /api/v1/seedance/text_to_video
Billing unit second
Input parameters aspect_ratio, duration_seconds, generate_audio, output_resolution, seed, source_image_urls
Max resolution 480p, 720p, 1080p
Aspect ratios 1:1, 4:3, 3:4, 16:9, 9:16, 21:9
Catalog status Operational
HOW IT WORKS

Use This Model in 3 Steps

  1. Get Your Key

    Sign up for free and create an API key for seedance-1.5-pro from the dashboard.

  2. Send a Request

    POST to /api/v1/seedance/text_to_video with the seedance-1.5-pro model slug and your parameters.

  3. Get Results

    Poll the task or follow the callback to retrieve the completed seedance-1.5-pro result.

What this model offers

Output resolution

Supports 480p, 720p, 1080p from the published endpoint schema.

Flexible parameters

Configure 6 documented parameters, including aspect_ratio, duration_seconds, generate_audio, output_resolution, seed.

Endpoint coverage

Exposes 1 public endpoint(s): text_to_video.

Usage-based billing

Metered by second with no subscription requirement.

Seedance 1.5 pro Pricing

Endpoint
Resolution
Duration
Price
text_to_video
Not available
second
$0.03-$0.29 / second
  • Generate audio: Enabled · Output resolution: 480p: $0.06 / second
  • Generate audio: Enabled · Output resolution: 720p: $0.13 / second
  • Generate audio: Enabled · Output resolution: 1080p: $0.28 / second
  • Generate audio: Disabled · Output resolution: 480p: $0.03 / second
  • Generate audio: Disabled · Output resolution: 720p: $0.06 / second
  • Generate audio: Disabled · Output resolution: 1080p: $0.14 / second
API REFERENCE

Endpoint Specification

Endpoint
POST /api/v1/seedance/text_to_video
Model ID
seedance-1.5-pro
Task Types
text_to_video
Max Duration
Unavailable
Resolutions
480p, 720p, 1080p
Aspect Ratios
1:1, 4:3, 3:4, 16:9, 9:16, 21:9
Output Format
Unavailable
Avg Generation Time
Unavailable

Request parameters

seed

Optional integer

No description available.

aspect_ratio

Optional value

No description available. (1:1, 4:3, 3:4, 16:9, 9:16, 21:9)

generate_audio

Optional boolean

No description available.

duration_seconds

Required integer

No description available.

output_resolution

Optional value

No description available. (480p, 720p, 1080p)

source_image_urls

Optional value

No description available.

USE CASES

Ad & social content

Generate product launch clips and short-form ads from a text brief, cutting production from weeks to hours.

E-learning

Convert lesson scripts into animated explainer videos at scale without a camera or crew.

Creator workflows

Produce viral short-form content for social platforms directly from a prompt.

FAQ

Frequently asked questions about Seedance 1.5 pro

How do I select seedance-1.5-pro?

Pass the model ID shown in the quickstart.

What's the rate limit on this variant?

Per-key rate limits scale with your usage tier. The pricing page shows current limits. If you need higher throughput, contact support to discuss tier upgrades.

Can I switch variants later?

Yes. Variant is a parameter in the request. Switch by changing the model ID — no code changes, no re-authentication, no separate billing setup. All variants share the same API key and request shape.

Does it stream?

Where streaming is available, RunAPI streams end-to-end. LLM models support token-level streaming. Media models use async task polling or webhook callbacks for result delivery.

Where do I report quality issues?

Open an issue on the public GitHub repo or email support at [email protected]. Include the task ID and model ID so the team can investigate the specific generation.

Do I need a separate provider account?

No. Your RunAPI API key is enough to access this variant and every other model in the catalog. You do not need accounts with the underlying provider.

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