Seedance 2 FastAPI
Faster, cheaper Seedance 2 — good for previews and high-volume.
Our price
$0.198+
per second of video
Official price
$0.242
Provider list price
Resolution tiers· per second of video
- 480p
- −17%$0.093
- 720p
- −18%$0.198
Specs
- Model ID
seedance-2-fast- Endpoint
POST /v1/video/generations- Category
- Video
- Provider
- ByteDance
- Official tier
- 720p t2v
Drop-in OpenAI compatibility
Point your existing OpenAI SDK at api.kunavo.com/v1 and swap the model id. No streaming changes, no SDK changes.
View docsTry it
Set KUNAVO_API_KEY from /app/keys, then run any of the snippets below.
curl https://api.kunavo.com/v1/video/generations \
-H "Authorization: Bearer $KUNAVO_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "seedance-2-fast",
"prompt": "a cinematic dolly-in shot of a red origami crane unfolding",
"duration": 5
}'Kunavo vs calling ByteDance directly
Same Seedance 2 Fast weights, same responses. What a gateway changes is the account, the SDK and the bill — here is the honest side-by-side.
| Kunavo | ByteDance direct | |
|---|---|---|
| Price (per second of video) | $0.198+ (−18%) | $0.24 |
| Account | One Kunavo account, key in 2 minutes, $5 minimum top-up | A ByteDance account plus its own billing setup |
| SDK | Keep the OpenAI SDK — change base_url, set model to "seedance-2-fast" | ByteDance's SDK, or their OpenAI-compatible layer where offered |
| Same key also reaches | Claude, Gemini, GPT, image, video and audio models | ByteDance's own catalog only |
| Billing | One Stripe balance, pay-as-you-go, never expires; failed requests unbilled | A separate invoice per provider |
| Rate limits | Shared gateway capacity, no contractual per-account limit | ByteDance's own tier limits, raised by usage history or contract |
Go direct to ByteDance when you need a contractual rate limit, an enterprise SLA, or a provider-only feature on day one. Use Kunavo when you want one key, one bill and a lower per-token rate across every provider.
FAQ
How much does Seedance 2 Fast cost?
On Kunavo, Seedance 2 Fast is $0.198+ per second of video — about 18% under ByteDance's official price. Failed requests are never billed, and it's pay-as-you-go — you only pay for successful calls.
Can I call Seedance 2 Fast with the OpenAI SDK?
Yes. Set base_url to https://api.kunavo.com/v1, pass your Kunavo key, and set model to "seedance-2-fast". Requests and responses are OpenAI-compatible.
What endpoint does Seedance 2 Fast use?
Seedance 2 Fast is called via POST /v1/video/generations on Kunavo's OpenAI-compatible API.
What is different from calling ByteDance directly?
The model is the same, at about 18% under ByteDance's list price. What changes is around it: one key and one Stripe balance instead of a ByteDance account with its own billing, the OpenAI SDK with base_url swapped instead of a provider-specific SDK, and the same key also reaching Claude, Gemini, GPT, image, video and audio models. The tradeoff is that gateway capacity is shared — if you need a contractual rate limit or an enterprise SLA on Seedance 2 Fast specifically, go direct to ByteDance.
Is Seedance 2 Fast cheaper on Kunavo?
Yes — Seedance 2 Fast is about 18% under ByteDance's official list price on Kunavo, with no subscription and no minimum monthly spend. You pay per token from a $5 top-up, failed requests are never billed, and the balance never expires.