Seedance 2.5
Seedance 2.5 costs $0.378/sec on FairStack · a text to video model for Narrative clips with dialogue and sound, Character-consistent reference video, Storyboard animation. No subscription required. Pay per generation with full REST API access. FairStack applies a transparent 20% margin on infrastructure cost so you always see the real price.
What is Seedance 2.5?
Seedance 2.5 is the next generation of ByteDance's Seedance video model. Like the rest of the Seedance family it is multi-mode from one model: drive it with a text prompt, a single first frame, a first and last frame for interpolation, or a set of reference images and audio clips. FairStack detects the mode from your input. It renders 480p, 720p, or 1080p in seven aspect ratios (including 21:9 and adaptive), with synchronized audio generated in the same pass. On FairStack a clip runs from 4 to 16 seconds. The model itself supports up to 30 seconds and larger reference sets; FairStack does not expose those yet. Reference videos are not accepted on FairStack yet. Billing is per second of output at the provider rate for the resolution you choose, plus the flat 20% platform fee, shown before you spend.
Key Features
What are Seedance 2.5's strengths?
What are Seedance 2.5's limitations?
What is Seedance 2.5 best for?
How much does Seedance 2.5 cost?
How does Seedance 2.5 perform across capabilities?
Carried over from the Seedance 2.0 estimates pending a benchmark; not independently verified.
How do I use the Seedance 2.5 API?
curl -X POST https://api.fairstack.ai/v1/generations/video \
-H "Authorization: Bearer $FAIRSTACK_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "seedance-2-5",
"prompt": "Your prompt here"
}'import requests
response = requests.post(
"https://api.fairstack.ai/v1/generations/video",
headers={
"Authorization": f"Bearer {FAIRSTACK_API_KEY}",
"Content-Type": "application/json",
},
json={
"model": "seedance-2-5",
"prompt": "Your prompt here",
},
)
result = response.json()
print(result["url"])const response = await fetch(
"https://api.fairstack.ai/v1/generations/video",
{
method: "POST",
headers: {
Authorization: `Bearer ${process.env.FAIRSTACK_API_KEY}`,
"Content-Type": "application/json",
},
body: JSON.stringify({
model: "seedance-2-5",
prompt: "Your prompt here",
}),
}
);
const result = await response.json();
console.log(result.url);What parameters does Seedance 2.5 support?
Frequently Asked Questions
How much does Seedance 2.5 cost?
Seedance 2.5 costs $0.378/sec on FairStack as of 2026-09-22. This price includes FairStack's transparent 20% margin on infrastructure cost. No subscription or monthly fee — you pay per generation only. Minimum deposit is $1.
What is Seedance 2.5 and what is it best for?
Seedance 2.5 is the next generation of ByteDance's Seedance video model. Like the rest of the Seedance family it is multi-mode from one model: drive it with a text prompt, a single first frame, a first and last frame for interpolation, or a set of reference images and audio clips. FairStack detects the mode from your input. It renders 480p, 720p, or 1080p in seven aspect ratios (including 21:9 and adaptive), with synchronized audio generated in the same pass. On FairStack a clip runs from 4 to 16 seconds. The model itself supports up to 30 seconds and larger reference sets; FairStack does not expose those yet. Reference videos are not accepted on FairStack yet. Billing is per second of output at the provider rate for the resolution you choose, plus the flat 20% platform fee, shown before you spend. Seedance 2.5 is best for Narrative clips with dialogue and sound, Character-consistent reference video, Storyboard animation. Available via FairStack's REST API with curl, Python, and Node.js SDKs.
Does Seedance 2.5 have an API?
Yes. Seedance 2.5 is available via FairStack's REST API at api.fairstack.ai. Send a POST request to /v1/generations/video with your API key and prompt. Works with curl, Python requests, Node.js fetch, and any HTTP client. No SDK installation required.
How does Seedance 2.5 compare to other video models?
Seedance 2.5 excels at Narrative clips with dialogue and sound, Character-consistent reference video, Storyboard animation. It is a text to video model priced at $0.378/sec on FairStack. Key strengths: Newest Seedance generation, Single model handles t2v / i2v / reference. Compare all video models at fairstack.ai/models.