FAQ
Billing
Section titled “Billing”How am I charged for video generation?
Section titled “How am I charged for video generation?”You’re billed per second of video, with rates based on resolution. For reference-to-video models, the billed duration includes both the output video AND any reference videos you provide.
When am I charged?
Section titled “When am I charged?”A hold is placed on your balance when you submit a task. The final charge is calculated when the task completes. If the task fails, the hold is automatically released.
What if a task fails?
Section titled “What if a task fails?”Failed tasks are automatically refunded. The refund appears in your Wallet transaction history within minutes.
Can I get a refund for a completed video I don’t like?
Section titled “Can I get a refund for a completed video I don’t like?”No. We can only refund technical failures, not creative dissatisfaction. We recommend testing with short, low-resolution videos first.
Video Results
Section titled “Video Results”How long does generation take?
Section titled “How long does generation take?”Most videos complete within 1–5 minutes. Longer videos and higher resolutions take proportionally longer.
How long is the video URL valid?
Section titled “How long is the video URL valid?”Video URLs may expire. We strongly recommend downloading the video file to your own storage immediately after generation completes.
What format is the output?
Section titled “What format is the output?”Videos are MP4 (H.264). The resolution and aspect ratio match your request parameters.
Can I generate videos longer than 30 seconds?
Section titled “Can I generate videos longer than 30 seconds?”Currently, Wan 2.7 text-to-video supports up to 150 seconds. Wan 3.0 models are limited to 30 seconds per request.
API Usage
Section titled “API Usage”What’s the difference between the models with and without -global?
Section titled “What’s the difference between the models with and without -global?”The -global suffix indicates the international routing variant. These typically offer the best combination of speed and reliability for users outside mainland China.
Can I use OpenAI SDKs?
Section titled “Can I use OpenAI SDKs?”The chat completions endpoint (/v1/chat/completions) is OpenAI-compatible. The video generation endpoint (/v1/videos) uses a custom format specific to HiPix — you’ll need to use direct HTTP requests or our examples.
Do you support webhooks/callbacks?
Section titled “Do you support webhooks/callbacks?”Not yet. Currently, you must poll for task completion. Webhook support is on our roadmap.
Can I cancel a task after submission?
Section titled “Can I cancel a task after submission?”Not currently. Once submitted, tasks run to completion. If you accidentally submit a duplicate, let it complete — you’ll only be charged once.
Account
Section titled “Account”How do I top up my balance?
Section titled “How do I top up my balance?”Go to Wallet in your dashboard and follow the payment instructions.
How do I change my API key?
Section titled “How do I change my API key?”Keys can’t be modified after creation. Create a new key, update your application, then delete the old one.
I forgot my API key. What do I do?
Section titled “I forgot my API key. What do I do?”Keys are only shown once at creation. Create a new key and update your applications.
Support
Section titled “Support”How do I report a bug or request a feature?
Section titled “How do I report a bug or request a feature?”Submit an issue on our GitHub repository or contact us through the dashboard.
I’m getting an error not listed in the docs
Section titled “I’m getting an error not listed in the docs”Include the following in your support request:
- The exact error response (JSON)
- The model you were using
- The approximate time of the request
- Your API key name (not the key itself)