How much does Muse Spark Open cost?

Muse Spark Open is billed pay-as-you-go at $1.38 per 1M input tokens and $4.68 per 1M output tokens. There is no subscription — you only pay for what you use.

What can Muse Spark Open do?

Muse Spark Open supports Vision, Tool calling.

Is Muse Spark Open free to use?

Muse Spark Open is a paid, pay-as-you-go model — no subscription, you are only charged for usage.

How do I use Muse Spark Open via the API?

Muse Spark Open is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID muse-spark-open with your Api.Airforce API key.

Who makes Muse Spark Open?

Muse Spark Open is Meta's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.

MetaPaidOperational

Muse Spark Open

API model name: muse-spark-open

Muse Spark Open is Meta's chat model, served on the Api.Airforce unified API. Capabilities include Vision, Tool calling. It is priced at $1.38 per million input tokens and $4.68 per million output tokens. That is below the provider's $1.25 official input rate. Access it through the OpenAI-compatible API with one key, alongside 100+ other models on Api.Airforce.

Get an API key View pricing

Pricing

Input / 1M tokens

$1.38

Output / 1M tokens

$4.68

Cache read / 1M tokens

$0.17

Cache write / 1M tokens

$1.73

Official input rate

$1.25

Official output rate

$4.25

Api.Airforce price vs. the provider's official rate.

Specifications

Provider: Meta
Type: chat model

Capabilities

VisionTool calling

What is Muse Spark Open used for?

Chatbots & assistants — conversational AI, drafting, summarizing and Q&A.
Image understanding — analyze photos, screenshots, charts and scanned documents.
Agents & automation — function calling and tool use for multi-step workflows.

Muse Spark Open vs. similar models

Model	Intelligence	Context	Input / 1M	Output / 1M
Muse Spark Open	—	—	$1.38	$4.68
Llama 2 13B	—	—	$1.95	$1.95
Llama 2 70B	—	—	$1.30	$1.30
Llama 2 7B	—	—	$1.30	$1.30

Prices are Api.Airforce pay-as-you-go rates per 1M tokens. Context is the maximum input length.

Muse Spark Open — frequently asked questions

How much does Muse Spark Open cost?: Muse Spark Open is billed pay-as-you-go at $1.38 per 1M input tokens and $4.68 per 1M output tokens. There is no subscription — you only pay for what you use.
What can Muse Spark Open do?: Muse Spark Open supports Vision, Tool calling.
Is Muse Spark Open free to use?: Muse Spark Open is a paid, pay-as-you-go model — no subscription, you are only charged for usage.
How do I use Muse Spark Open via the API?: Muse Spark Open is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID muse-spark-open with your Api.Airforce API key.
Who makes Muse Spark Open?: Muse Spark Open is Meta's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.

All models·Quickstart·Chat API reference

Use Muse Spark Open via the API

OpenAI-compatible — point any OpenAI SDK at https://api.airforce/v1 and pass muse-spark-open as the model.

cURL

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

Python

from openai import OpenAI
client = OpenAI(base_url="https://api.airforce/v1", api_key="$AIRFORCE_API_KEY")
r = client.chat.completions.create(
    model="muse-spark-open",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(r.choices[0].message.content)

JavaScript

import OpenAI from "openai";
const client = new OpenAI({ baseURL: "https://api.airforce/v1", apiKey: process.env.AIRFORCE_API_KEY });
const r = await client.chat.completions.create({
  model: "muse-spark-open",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(r.choices[0].message.content);