Seedance 2.5

Overview

Seedance 2.5 (sd2.5) is ByteDance Seed's next-generation professional multimodal video generation model. It supports native 30-second video generation, up to 50 multimodal reference inputs, professional video editing, and multilingual video creation. Seedance 2.5 improves visual consistency, prompt understanding, camera movement, and cinematic video generation quality for professional content creation.

Key Capabilities

• 30-second video generation: Generate longer AI videos with improved consistency and storytelling.
• 50 multimodal references: Support up to 30 images, 10 videos, and 10 audio files in a single generation.
• Audio-only reference: Use audio as an independent input for music-driven and sound-aware video creation.
• Professional video editing: Edit or extend an existing video with mode: "edit" / "extend" (Video Edit and Video Extend in the generator).
• Enhanced realism and consistency: Improve character consistency, camera movement, and visual quality.
• Multilingual generation: Support 10+ languages for global video creation.

Inputs

Seedance 2.5 supports image, video, and audio references for multimodal video generation.

Note: Total reference assets across all modalities must not exceed 50.

Parameters

Seedance 2.5 API Pricing

Seedance 2.5 API uses a pay-as-you-go credit system on SeeGen AI. The rates below use the $500 API Pack: 125,000 credits at $0.004 per credit.

Run Seedance 2.5 API

Generate a video in two steps: create a generation task, then query the result using the returned taskId.

Create a Task

curl -X POST \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "sd2.5",
    "inputs": {
      "videoInputMode": "reference",
      "urls": [
        "https://example.com/reference-image.jpg"
      ],
      "videoUrls": [
        "asset://asset-reference-video"
      ],
      "audioUrls": [
        "asset://asset-reference-audio"
      ],
      "prompt": "Create a cinematic scene using the provided character, motion, and audio references.",
      "duration": "10s",
      "resolution": "1280x720",
      "outputResolution": "720p",
      "generateAudio": true
    }
  }' \
  https://seegen.ai/api/v1/jobs/createTask

Query the Result

Use the returned taskId to check generation status and retrieve the completed video.

curl \
  -H "Authorization: Bearer $API_KEY" \
  "https://seegen.ai/api/v1/jobs/queryTask?taskId=YOUR_TASK_ID"

Seedance 2.5 vs Seedance 2.0

Seedance 2.5 expands Seedance 2.0 with longer video generation, more multimodal references, audio-only input, enhanced editing, and broader multilingual support.