# Veo 3.1 API on Opennan

> Veo 3.1 API on Opennan: $0.156/s at 720p, 22% below Google's official $0.20/s.

- Maker: Google
- Category: Video
- Model id: `veo-3-1`
- Endpoint: POST https://api.opennan.com/v1/videos/generations
- MCP: https://api.opennan.com/v1/mcp (generate_video)
- Page: https://opennan.com/models/veo-3-1

## Veo 3.1 API prices

| Tier | Opennan | Official | Below official |
| --- | --- | --- | --- |
| 720p, Standard | $0.156/s ($1.248 for 8 s) | $0.20/s | 22% below |
| 1080p, Standard | $0.156/s ($1.248 for 8 s) | $0.20/s | 22% below |
| 4K, Standard | $0.312/s ($2.496 for 8 s) | $0.40/s | 22% below |
| 720p, Standard, with audio | $0.312/s ($2.496 for 8 s) | $0.40/s | 22% below |
| 1080p, Standard, with audio | $0.312/s ($2.496 for 8 s) | $0.40/s | 22% below |
| 4K, Standard, with audio | $0.468/s ($3.744 for 8 s) | $0.60/s | 22% below |

Official is the model maker's own list price for the same tier. Where the maker publishes a price, we never sell above it, most tiers at least 10% below.

## Call Veo 3.1 from code

```bash
curl https://api.opennan.com/v1/videos/generations \
  -H "Authorization: Bearer $OPENNAN_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"veo-3-1","prompt":"Rain on a neon street at night, slow push-in","duration":4,"quality":"720p","aspect_ratio":"16:9"}'

# Then poll until "status" is "succeeded" or "failed":
curl https://api.opennan.com/v1/tasks/<task id> -H "Authorization: Bearer $OPENNAN_KEY"
```

## Veo 3.1 API questions

### How much does the Veo 3.1 API cost?

Veo 3.1 API on Opennan: $0.156/s at 720p, 22% below Google's official $0.20/s. Prices are in US dollars per call, shown before you run, and every tier is in the price table.

### How does that compare with the official price?

Google lists $0.20/s; Opennan charges $0.156/s, 22% below. We only sell a tier below the maker's official price, most tiers at least 10% below.

### What inputs does Veo 3.1 take?

Text prompt, Image, Start and end frames.

### Which options can a call set?

Lengths: 4, 6, 8 seconds. Resolutions: 720p, 1080p, 4K. Aspect ratios: 16:9, 9:16, 1:1, 4:3, 3:4, 21:9, 9:21.

### How is it billed?

Per video: the price depends on resolution, length and sound, and is shown before the call.

### What happens if a generation fails?

A failed task is refunded in full. You pay only for results.

### How do I call Veo 3.1 from an AI agent?

Add the MCP server https://api.opennan.com/v1/mcp with your API key as a bearer token, then call the generate_video tool with model "veo-3-1". Or send a POST to https://api.opennan.com/v1/videos/generations.

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