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AI model

Meta: Muse Spark Open

meta/muse-spark-open

Meta: Muse Spark Open is a 1,048,576-token model served on Composite at $1.56 per million tokens in and $5.31 per million tokens out.

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Specifications

Specifications and pricing as served by Composite
Model IDmeta/muse-spark-open
Providercv11
Context window1,048,576 tokens
Acceptstext, image, video, file, audio
Returnstext
Input price$1.56 per million tokens
Output price$5.31 per million tokens
Prompt cachingSupported — cached input is billed at the provider's cache rate, on credits and plans alike
ThinkingAlways on for this model
ModeratedNo
Cost on a monthly planAbout 14 plan credits per typical call (8k in, 1k out)
Routing endpoints10 (base plus 9 routing variants)

Measured on Composite

This model has not carried enough traffic on Composite yet to publish a success rate, a latency figure or a traffic rank. The numbers appear here once it has.

Routing variants

The same model behind 9 alternative endpoints. Call the id directly to pin a route; the base id above picks for you.

RouteModel IDProviderPrice
Normal meta/muse-spark-open-normal cv11 $1.56 per million tokens input · $5.31 per million tokens output
Normal + cheapThink meta/muse-spark-open-normal:cheapThink cv11 $1.56 per million tokens input · $5.31 per million tokens output
Cheapest provider meta/muse-spark-open:cheapest-provider Together $1.56 per million tokens input · $5.31 per million tokens output
Cheapest provider + cheapThink meta/muse-spark-open:cheapest-provider:cheapThink Together $1.56 per million tokens input · $5.31 per million tokens output
cheapThink meta/muse-spark-open:cheapThink cv11 $1.56 per million tokens input · $5.31 per million tokens output
Fast meta/muse-spark-open:fast Together $1.56 per million tokens input · $5.31 per million tokens output
Fast + cheapThink meta/muse-spark-open:fast:cheapThink Together $1.56 per million tokens input · $5.31 per million tokens output
Quality meta/muse-spark-open:quality Nebius $1.56 per million tokens input · $5.31 per million tokens output
Quality + cheapThink meta/muse-spark-open:quality:cheapThink Nebius $1.56 per million tokens input · $5.31 per million tokens output

Pricing

$1.56 per million tokens input · $5.31 per million tokens output

Credits pay the provider’s price plus 25%; cache hits cost less.

On a monthly plan, a typical call (8k tokens in, 1k out) uses about 14 plan credits, at the provider's own price.

Provider

cv11

Roleplay fit

Llama models are a widely-supported open baseline, useful when you want predictable, well-documented behavior.

Context behavior

With a 1,048,576-token context window, it can hold a long-running roleplay or a full lorebook in memory without losing earlier plot details, so it suits multi-session campaigns and character cards with heavy backstory.

Cost for regular use

It sits in the mid-range on price, a reasonable pick for regular roleplay use without going for the cheapest option available.

From the provider

Muse Spark Open is a coding-optimized open-weight model. Trained specifically for agentic coding workflows, it delivers higher first-attempt accuracy, reliable tool calling, and deep codebase understanding across the repos developers...

Supplied by cv11, not written by Composite.