# Kling 2.1 API on Opennan

> Kling 2.1 API on Opennan: $0.0325/s at 720p.

- Maker: Kling
- Category: Video
- Model id: `kling-2-1`
- Endpoint: POST https://api.opennan.com/v1/videos/generations
- MCP: https://api.opennan.com/v1/mcp (generate_video)
- Page: https://opennan.com/models/kling-2-1

## Kling 2.1 API prices

| Tier | Opennan | Official | Below official |
| --- | --- | --- | --- |
| 720p, Standard | $0.0325/s ($0.1625 for 5 s) | No official price | - |
| 1080p, Standard | $0.065/s ($0.325 for 5 s) | No official price | - |

The maker doesn't sell this exact model on its own API (open weights, or retired there), so there is no official price to compare.

## Call Kling 2.1 from code

```bash
curl https://api.opennan.com/v1/videos/generations \
  -H "Authorization: Bearer $OPENNAN_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"kling-2-1","prompt":"Rain on a neon street at night, slow push-in","image":"https://example.com/start-frame.png","duration":5,"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"
```

## Kling 2.1 API questions

### How much does the Kling 2.1 API cost?

Kling 2.1 API on Opennan: $0.0325/s at 720p. Prices are in US dollars per call, shown before you run, and every tier is in the price table.

### What inputs does Kling 2.1 take?

Image.

### Which options can a call set?

Lengths: 5, 10 seconds. Resolutions: 720p, 1080p. 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 Kling 2.1 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 "kling-2-1". Or send a POST to https://api.opennan.com/v1/videos/generations.

## Similar models

- [Wan 2.5](https://opennan.com/models/wan-2-5): from $0.039 per second
- [Seedance 2.0 Mini](https://opennan.com/models/seedance-2-mini): from $0.0247 per second
- [Hailuo 2.3](https://opennan.com/models/hailuo-2-3): from $0.03792 per second
- [Seedance 1.5 Pro](https://opennan.com/models/seedance-1-5-pro): from $0.065 per second
- [Veo 3.1 Fast](https://opennan.com/models/veo-3-1-fast): from $0.065 per second
- [Kling 2.5 Turbo Pro](https://opennan.com/models/kling-2-5-turbo-pro): from $0.0546 per second