ByteDance: Seedance 1.5 Pro

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Seedance 1.5 Pro is ByteDance's audio-visual generation model, released 2026-03, built on a 4.5B parameter Dual-Branch Diffusion Transformer. It generates video and audio simultaneously in a single pass, avoiding the timing problems of sequential dubbing, and supports multi-language lip-sync and cinematic camera control.

MirAPI doesn’t offer this model. The prices shown are the official list prices.

Modalities
inTextinImageoutVideo
Per second
$0.052720p
Resolution
480p · 720p · 1080p
Duration
4–12s
Released
Mar 23, 2026

Video pricing

Billed per second of generated video. The rate depends on the output resolution, and on whether audio is generated with it.

Resolution
Per second
480pderived
$0.023
720pderived
$0.052
1080pderived
$0.117

Rows marked “derived” are billed per video token upstream; the per-second figure comes from the published token-usage formula (width × height × 24 fps ÷ 1024) at 16:9.

Duration
4–12s
Aspect ratios
1:1 · 3:4 · 9:16 · 9:21 · 4:3 · 16:9 · 21:9
Audio generation
Yes

Capabilities

Vision

Parameters

Request parameters this model accepts through the API.

frequency_penalty

Quick start

# 1. start the job
curl https://api.mirapi.ai/v1/video/generations \
  -H "Authorization: Bearer $MIRAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "",
    "prompt": "A kite over the sea",
    "duration": 5
  }'

# 2. poll until status is "completed"
curl https://api.mirapi.ai/v1/video/generations/$TASK_ID \
  -H "Authorization: Bearer $MIRAPI_API_KEY"
Wire Seedance 1.5 Pro into your product

1M free tokens to start, no card required. It’s OpenAI-compatible, so you only change the base URL.

Start free