Moyi API
Bench

Seedance 2.5 Flex API

Seedance 2.5 Flex by ByteDance for text to video, reference to video, 4–30s clips up to 1080p with audio. Call it through Moyi API's OpenAI-compatible /v1/videos endpoint with one API key.

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Get an API keySee the API exampleOr generate in Video Studio →

Seedance 2.5 Flex model IDs and parameters

ModeModel IDDurationResolutionAspect ratioAudio
Text to videoseedance-2-5-text-to-video-flex4–30s480p, 720p, 1080p16:9, 4:3, 1:1, 3:4, 21:9, 9:16Yes
Reference to videoseedance-2-5-reference-to-video-flex4–30s480p, 720p, 1080p16:9, 4:3, 1:1, 3:4, 21:9, 9:16Yes

Call the Seedance 2.5 Flex API

1. Get an API key and set it as an environment variable

export TEAMO_API_KEY=sk-teamo-...
Get an API key

2. Make your first request

Video generation is asynchronous: create a job, poll it, then download the MP4.

import os, time, requests

API = "https://api.moyi-api.com/v1/videos"
headers = {"Authorization": f"Bearer {os.environ['TEAMO_API_KEY']}"}

# 1. Create a video job
job = requests.post(API, headers=headers, json={
    "model": "seedance-2-5-text-to-video-flex",
    "prompt": "A small dog running on grass",
    "seconds": "5",
}).json()

# 2. Poll until status is completed
while job["status"] not in ("completed", "failed"):
    time.sleep(5)
    job = requests.get(f"{API}/{job['id']}", headers=headers).json()

# 3. Download the MP4
if job["status"] == "completed":
    video = requests.get(f"{API}/{job['id']}/content", headers=headers)
    open("video.mp4", "wb").write(video.content)
else:
    print(job.get("error"))

Pricing

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Seedance 2.5 Flex API FAQ

What are the Seedance 2.5 Flex API model IDs?
Seedance 2.5 Flex model IDs on Moyi API — Text to video: seedance-2-5-text-to-video-flex; Reference to video: seedance-2-5-reference-to-video-flex.
What is the difference between Seedance 2.5 Flex text-to-video and image-to-video?
Text to video creates a clip from a prompt only. Image to video animates the image you pass in input_reference as the first frame, and reference to video uses your images as references for characters, objects or style.
How long and what resolution can Seedance 2.5 Flex videos be?
Seedance 2.5 Flex generates 4–30s clips up to 1080p in 16:9, 4:3, 1:1, 3:4, 21:9, 9:16, with optional audio. Pass seconds as an integer string; if size is omitted, the model's first supported resolution and aspect ratio are used.
How do I call the Seedance 2.5 Flex API?
Send POST /v1/videos with the model ID and prompt, poll GET /v1/videos/{video_id} until status is completed, then download from /v1/videos/{video_id}/content. The endpoint follows OpenAI Videos, so the OpenAI SDK's client.videos.create works with base_url https://api.moyi-api.com/v1. Video generation API docs.
How much does the Seedance 2.5 Flex API cost and how do I pay?
Seedance 2.5 Flex is billed per second of generated video. New accounts start with a $0 balance — top up from $5 by card, then usage is deducted per job with no subscription. Per-second and per-clip prices are in the Pricing section of this page. Top up.

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