---
title: "Muse Spark Open API price | RelaySwitch"
canonical: https://relayswitch.io/models/muse-spark-open
generated: 2026-11-02T10:50:34.083Z
source: https://api.relayswitch.io/v1/catalog
base_url: https://api.relayswitch.io/v1
---

# Muse Spark Open

Muse Spark Open by Meta through the RelaySwitch API: $4.375 per million input tokens, $14.875 per million output tokens. Pay by card or crypto (Card, USDT, USDC, BTC, ETH, SOL). No KYC.

## Price per million tokens

| Input | Cached input | Output |
| --- | --- | --- |
| $4.375 | $0.525 | $14.875 |

## Specs

- Model id: `muse-spark-open`
- Developer: Meta
- Context window: 1M tokens
- Max output: not published
- Input: text, image

## Call it

```bash
curl https://api.relayswitch.io/v1/chat/completions \
  -H "Authorization: Bearer $RELAYSWITCH_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "muse-spark-open", "messages": [{"role": "user", "content": "Hello"}]}'
```

Keys and top-ups: https://app.relayswitch.io/console