How much does Muse Spark Open cost per million tokens?

$1.25 per million input tokens and $4.25 per million output tokens, as listed on OpenRouter on October 21, 2026.

Does Muse Spark Open support prompt caching?

Yes. OpenRouter lists cached input at $0.15 per million tokens, against $1.25 for uncached input.

Is there a cheaper model as good as Muse Spark Open?

Qwen3.5-Flash scores 50.1 on the LLMBenchmark Index, within two points of Muse Spark Open or above it, and costs $0.26 per million output tokens.

Muse Spark Open API pricing

As of October 21, 2026, Meta Muse Spark Open costs $1.25 per million input tokens and $4.25 per million output tokens, the median of 6 providers on OpenRouter, with cached input at $0.15 per million.

Muse Spark Open benchmarks and specs · Every Meta model's price

Input, per million tokens$1.25
Output, per million tokens$4.25
Cached input, per million$0.15
Context window1.05M tokens
Max output944K tokens
Output speed135 tok/s

What a request costs

Three fixed token mixes at the list price, without cache or batch discounts. For a whole month, use the calculator.

Cost of three workloads on Muse Spark Open
Workload	Tokens	One request	1,000 requests	Fits the context window
Chat turn	1K input + 500 output tokens	$0.0034	$3.38	Yes
Repository review	50K input + 3K output tokens	$0.075	$75.25	Yes
Agent loop	200K input + 10K output tokens	$0.292	$292.50	Yes
Solved coding task	One SWE-bench Verified attempt, divided by the share that succeed	Not computable	Not computable

Price history

The price of Muse Spark Open here is the median across 6 providers on OpenRouter, so we do not track price changes for it.

Cheaper models as good as Muse Spark Open

Models within two points of Muse Spark Open or above it on the LLMBenchmark Index, with a lower output price. Cheapest first.

Muse Spark Open pricing questions

How much does Muse Spark Open cost per million tokens?: $1.25 per million input tokens and $4.25 per million output tokens, as listed on OpenRouter on October 21, 2026.
Does Muse Spark Open support prompt caching?: Yes. OpenRouter lists cached input at $0.15 per million tokens, against $1.25 for uncached input.
Is there a cheaper model as good as Muse Spark Open?: Qwen3.5-Flash scores 50.1 on the LLMBenchmark Index, within two points of Muse Spark Open or above it, and costs $0.26 per million output tokens.
Has the price of Muse Spark Open changed?: The price of Muse Spark Open here is the median across 6 providers on OpenRouter, so we do not track price changes for it.