Pricing
| Provider | Input / 1M | Cached / 1M | Output / 1M |
|---|---|---|---|
| Nebius | $1.25 | $0.15 | $4.25 |
| Doubleword | $1.25 | $0.15 | $4.25 |
USD, as of November 5, 2026. Live prices
Muse Spark Open API
- 1.05MContext
- 1.05MMax output
- $1.25/ $4.25From, per 1M in / out
- 2Providers
Providers
Cost
| Workload | Nebius |
|---|---|
| 1,000 chat replies2K in, 500 out each | $4.63 |
| 1,000 agent tasks50K in, 5K out each | $83.75 |
| Monthly batch job500M in, 50M out | $837.50 |
Quickstart
curl https://api.routerplus.com/v1/chat/completions \
-H "Authorization: Bearer $ROUTERPLUS_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "meta/muse-spark-open",
"messages": [{ "role": "user", "content": "Hello" }]
}'FAQ
How much does the Muse Spark Open API cost?
On RouterPlus, Muse Spark Open costs $1.25 per million input tokens and $4.25 per million output tokens at Nebius, the lowest listed prices and the provider where routing starts. Prices as of November 5, 2026.
Which providers serve Muse Spark Open?
2 providers serve Muse Spark Open on RouterPlus: Nebius and Doubleword. By default the router tries them in routing order and fails over before the first byte, never mid-answer.
What is the Muse Spark Open model ID?
Use "meta/muse-spark-open" as the model with the OpenAI-compatible endpoint at https://api.routerplus.com/v1. The same key also accepts the Anthropic API format.
What is the Muse Spark Open context window?
1.05M tokens of context and up to 1.05M output tokens, per the RouterPlus catalog. A provider can list a lower limit; the console shows each one.
Do any Muse Spark Open providers retain prompts?
1 of 2 providers list no prompt retention (Nebius). Doubleword may retain prompts. Pin the providers you accept with a routing policy.
Can I reserve capacity for Muse Spark Open?
Yes. Tell us the model, the throughput you need and the region with "I need inference", and RouterPlus lines up reserved capacity for it.