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Muse Spark Open
nebius/
Nebius model · Served by Nebius · live on the gateway
Input / 1M
$1.25
Output / 1M
$4.25
Context
1M tokens
Max output
131K tokens
Input
Text, Image
Released
2d ago
Pricing
Input tokens$1.25 per 1M
Output tokens$4.25 per 1M
Provider list priceExactly what your balance is debited; our fee is charged when you buy credits
About 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.
VisionReasoningTools
What it supports
- Tool calling (function calling)
- JSON mode and structured output
- Image input (vision)
- Audio input
- Extended reasoning
- Streaming responses
- OpenAI SDK, Anthropic SDK and any OpenAI-compatible client
Make a request
curl https://rapidrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $RAPIDROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "nebius/meta-models/muse-spark-open",
"messages": [{ "role": "user", "content": "Hello" }]
}'Frequently asked
How do I call Muse Spark Open through an OpenAI-compatible API?
Point any OpenAI-compatible client at https://rapidrouter.ai/api/v1 with a Rapid Router API key and set the model to nebius/meta-models/muse-spark-open. The chat completions endpoint is https://rapidrouter.ai/api/v1/chat/completions.
What is the context window of Muse Spark Open?
Muse Spark Open has a context window of 1,048,576 tokens on Rapid Router, and returns up to 131,072 output tokens per reply.
What can Muse Spark Open do?
On Rapid Router, Muse Spark Open supports tool calling, JSON mode, image input, extended reasoning.