# Kokoro API on Opennan

> Kokoro API on Opennan: $1.287 per 1M characters.

- Maker: hexgrad
- Category: Voice
- Model id: `kokoro`
- Endpoint: POST https://api.opennan.com/v1/audio/speech
- MCP: https://api.opennan.com/v1/mcp (generate_speech)
- Page: https://opennan.com/models/kokoro

## Kokoro API prices

| Tier | Opennan | Official | Below official |
| --- | --- | --- | --- |
| Per 1M characters | $1.287 | 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 Kokoro from code

```bash
curl https://api.opennan.com/v1/audio/speech \
  -H "Authorization: Bearer $OPENNAN_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"kokoro","input":"Hello! This voice was made with one API call.","voice":"heart","response_format":"mp3"}' \
  --output speech.mp3
```

## Kokoro API questions

### How much does the Kokoro API cost?

Kokoro API on Opennan: $1.287 per 1M characters. Prices are in US dollars per call, shown before you run, and every tier is in the price table.

### What inputs does Kokoro take?

Text prompt.

### Which options can a call set?

Up to 4,096 characters of text per call. Audio formats: mp3, wav, opus.

### How is it billed?

Per character of input text, priced per 1M characters.

### What happens if a generation fails?

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

### How do I call Kokoro 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_speech tool with model "kokoro". Or send a POST to https://api.opennan.com/v1/audio/speech.

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