Meta: Muse Spark Open
Muse Spark Open is an 816B total / 42B active open-weight multimodal reasoning model from Meta for coding and long-horizon agentic work, with 1M-token context.
- Model lab
- Meta
- Model family
- muse
Quickstart
Use your Moduck API Key, set the API base URL to https://api.moduck.ai/v1, and set the model parameter to meta/muse-spark-open.
import os
import requests
base_url = "https://api.moduck.ai/v1"
api_key = os.environ["MODUCK_API_KEY"]
model_id = "meta/muse-spark-open"
response = requests.post(
f"{base_url}/chat/completions",
headers={
"Authorization": f"Bearer {api_key}",
"Content-Type": "application/json",
},
json={
"model": model_id,
"messages": [{"role": "user", "content": "Hello!"}],
"stream": False,
},
timeout=60,
)
response.raise_for_status()
print(response.json())Use the familiar OpenAI-style chat request format to make model integration easier.
Muse Spark Open API Pricing
| Type | Price information |
|---|---|
| Input | USD 1 / 1M tokens |
| Output | USD 3.4 / 1M tokens |
| Cached input | USD 0.12 / 1M tokens |
Benchmarks
Performance
Measured on the Moduck gateway across live traffic, hour by hour over the last 24 hours. Time to first token is how long before anything appears; throughput is how fast the answer is written after that; end-to-end latency is the whole round trip. Figures are medians unless the card says otherwise.
Performance trends
Availability
Uptime is the share of time at least one provider serving this model responded. Availability is stricter: the share of requests actually served. A provider that answers but fails part of the traffic lowers availability without lowering uptime. Both cover the last three days.
Muse Spark Open Compare models
| Model | Input price | Output price | Context window | Capabilities |
|---|---|---|---|---|
| Muse Spark OpenThis page | USD 1 / 1M tokens | USD 3.4 / 1M tokens | 1,048,576 | Text output · Reasoning · Tool calling |
| Muse Wonder Full | Price currently unavailable | Price currently unavailable | 1,048,576 | Text output · Reasoning · Tool calling |
| Muse Wonder | USD 3.2 / 1M tokens | USD 16 / 1M tokens | 1,048,576 | Text output · Reasoning · Tool calling |
| Muse Spark 1.3 | USD 1 / 1M tokens | USD 3.4 / 1M tokens | 1,048,576 | Text output · Reasoning · Tool calling |
| Muse Glimmer 30B | USD 0.2 / 1M tokens | USD 0.8 / 1M tokens | 131,072 | Text output · Reasoning · Tool calling |
Model specifications
- Input
- text, image, video, audio
- Output
- text
- Context window
- 1,048,576
- Maximum output
- 131,072
- Release date
- 2026-10-15
- Attachments
- Yes
- Reasoning
- Yes
- Tool calling
- Yes
- Structured output
- Yes
- Temperature setting
- Yes
- Open weights
- Yes
Frequently asked questions
What is Muse Spark Open for?
Muse Spark Open is an 816B total / 42B active open-weight multimodal reasoning model from Meta for coding and long-horizon agentic work, with 1M-token context.
What inputs and outputs does Muse Spark Open support?
Recorded inputs: text, images, video, audio; outputs: text.
How is Muse Spark Open priced?
The pricing table shows the current recorded Moduck price. For example: Input USD 1 / 1M tokens; Output USD 3.4 / 1M tokens. See the pricing table for all units, variants, and conditions.
What specifications are recorded for Muse Spark Open?
Current model records list Context window 1,048,576 tokens; Maximum output 131,072 tokens.
What model parameter does the Quickstart use?
The example uses meta/muse-spark-open. This value comes from the page identifier and is not confirmed as a callable Moduck public ID.
Can I call this model through the Moduck API now?
This page has no verified Moduck API call for this model. A Quickstart example or reserved ID does not establish access; check the models available to your account.