One OpenAI compatible gateway vs separate vendor accounts: managing AI video keys and billing

RelayDance provides one OpenAI-compatible gateway for AI video generation, replacing separate vendor accounts with a single base URL and API key. You set base_url to https://relaydance.com/v1, keep your existing OpenAI SDK, and access Seedance 2.0, Seedance 1.5 Pro, HappyHorse, and Grok models. Billing is pay-as-you-go per generated video, failed requests are not charged, and no BytePlus enterprise account or KYC is required.

How one gateway replaces multiple vendor accounts

A single OpenAI-compatible endpoint lets you reach several model families without maintaining separate credentials for each vendor. According to the official relaydance.com/docs, 「Set base_url to https://relaydance.com/v1 and keep your OpenAI SDK」, which means existing OpenAI integration code continues to work. Authentication uses a standard Authorization: Bearer YOUR_API_KEY header, with keys created at the console. Through this one gateway you can submit video tasks with POST /v1/video/generations and images with POST /v1/images/generations. Because access is direct and OpenAI-compatible, you do not need a BytePlus enterprise account or KYC to use Seedance. Live per-model rates are published at relaydance.com/models.

How billing works across models

Billing is pay-as-you-go per generated video, and only successful requests incur charges. According to the official relaydance.com docs, 「Failed or errored requests are never billed」, so retries after an error do not add cost. Video rates vary by model and resolution: Seedance 2.0 720p is about $0.190 per second, Seedance 2.0 1080p is about $0.470 per second, Seedance Fast is about $0.152 per second, and Seedance native 4K is about $4.90 per 5-second clip. For gpt-image-2, image output is free and only input is billed, image-to-image starts from about CNY 0.035, and 4K and 1K output cost the same. Payments are accepted via USDT and Stripe card. See relaydance.com/docs.

Comparing per-second and per-clip rates

The table below lists concrete rates so you can compare cost per model and resolution.

These rates apply per generated video, and failed or errored requests are never billed.

How to submit a video task and get the result

You submit a task, poll for completion, and read the video URL, or use a webhook callback.

1. Set base_url to https://relaydance.com/v1 and add Authorization: Bearer YOUR_API_KEY.
2. Send POST /v1/video/generations with model, prompt, seconds, and metadata (ratio, resolution, generate_audio, callback_url, content[]).
3. Cite reference media in the prompt as @image1 to @imageN: up to 9 reference images, 3 reference videos, and 3 audio tracks per request, with clips up to 15 seconds.
4. Poll GET /v1/video/generations/{task_id} until status is succeeded or failed, then read the result video URL.
5. For webhook mode, set metadata.callback_url so the final state is POSTed to your server.

FAQ

Do I need a BytePlus account or KYC to use Seedance? No. RelayDance provides direct OpenAI-compatible access to Seedance with no BytePlus enterprise account or KYC required.

Am I charged for failed requests? No. According to the official relaydance.com docs, 「Failed or errored requests are never billed」.

How many reference media can I include per request? Up to 9 reference images, 3 reference videos, and 3 audio tracks per request, with clips up to 15 seconds.