How much does Muse Spark Open cost?

$1.25 per million input tokens and $4.25 per million output tokens; cached input costs $0.15 per million. Prices as of Oct 21, 2026.

What is the context window of Muse Spark Open?

1.05M tokens, with up to 944K output tokens per response.

Does Muse Spark Open support images, tools and structured output?

Images as input: yes. Tool calling: yes. Structured (JSON) output: yes. Reasoning mode: yes.

What are cheaper alternatives to Muse Spark Open?

Models with the same key capabilities for at least 20% less include MiMo-V2.6-Pro ($0.435 / $0.87), Step 5 Preview ($1.00 / $2.70), Claude Haiku 5.5 ($0.10 / $0.50).

Muse Spark Open

$1.25 per 1M input tokens and $4.25 per 1M output tokens · 1.05M context · vision, audio, tools, reasoning, JSON, open weights.

Prices checked Oct 21, 2026 · tracked by LLM Cost Index since Oct 21, 2026

$1.25

input / 1M tokens

$4.25

output / 1M tokens

$0.15

cached input / 1M

1.05M

context window

944K

max output

What Muse Spark Open costs per month

Estimated monthly bill for typical workloads, using the cached-input price for repeated context. Try your own numbers in the cost calculator.

Workload	Per month
Customer chatbot 1,000 conversations a day, 8 turns each	$569
Document Q&A (RAG) 500 questions a day over retrieved documents	$134
Coding / tool-using agent 200 tasks a day, long tool-heavy contexts	$255
Content generation 30 long articles a day	$12.94
Classification / extraction 100,000 short items a day	$1,316

Price history

We started tracking Muse Spark Open on Oct 21, 2026; the chart appears as soon as there is a second data point. See all recent price changes.

Where to run Muse Spark Open: 5 providers

BaseTen is the cheapest at $1.25 input / $4.25 output per 1M tokens. Uptime is the average over the last 30 days as reported by OpenRouter; see provider reliability.

Provider	Input / 1M	Output / 1M	Context	Uptime	Notes
BaseTen	$1.25	$4.25	1.05M	99.2%	fp4
Fireworks	$1.25	$4.25	1.05M	99.5%	—
Modal	$1.25	$4.25	1M	98.5%	—
Nebius	$1.25	$4.25	1.05M	98.6%	fp4
Together	$1.25	$4.25	1.05M	98.9%	—

Cheaper alternatives to Muse Spark Open

Models with the same tool calling, image input, structured output for at least 20% less (3:1 input/output mix), most capable first.

Cheaper alternatives to Muse Spark Open
Model	Input / 1M	Output / 1M	Context	Capabilities
MiMo-V2.6-Pro Xiaomi	$0.435	$0.87	1.05M	visionaudiotoolsreasoningJSONopen weights
Step 5 Preview Stepfun	$1.00	$2.70	1.05M	visiontoolsreasoningJSONopen weights
Claude Haiku 5.5 Anthropic	$0.10	$0.50	1M	visiontoolsreasoningJSON
GLM 5.3 Flash Z.ai	$0.041	$0.12	1.05M	visiontoolsreasoningJSONopen weights
Gemini 3.7 Flash Google	$0.75	$3.75	1.05M	visionaudiotoolsreasoningJSON

How to pay less for Muse Spark Open

For a customer chatbot (1,000 conversations a day, 8 turns each) that costs $807 a month at list price without caching:

Option	Per month	You save
Move to MiMo-V2.6-Pro (similar capabilities)	$136	$671 (83%)
Use prompt caching (60% of input cached)	$569	$238 (29%)

Other workloads: cut-your-bill tool for Muse Spark Open.

Specifications

Model ID	`meta/muse-spark-open`
Input	text, image, video, file, audio
Output	text
Tool calling	Yes
Structured output	Yes
Reasoning mode	Yes
Open weights	Yes — meta-models/Muse-Spark-Open-816B-A42B
Released	Oct 15, 2026

FAQ

How much does Muse Spark Open cost?: $1.25 per million input tokens and $4.25 per million output tokens; cached input costs $0.15 per million. Prices as of Oct 21, 2026.
What is the context window of Muse Spark Open?: 1.05M tokens, with up to 944K output tokens per response.
Does Muse Spark Open support images, tools and structured output?: Images as input: yes. Tool calling: yes. Structured (JSON) output: yes. Reasoning mode: yes.
What are cheaper alternatives to Muse Spark Open?: Models with the same key capabilities for at least 20% less include MiMo-V2.6-Pro ($0.435 / $0.87), Step 5 Preview ($1.00 / $2.70), Claude Haiku 5.5 ($0.10 / $0.50).

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