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Muse Spark 1.2 Contributor

Chat model by Meta.

Meta language model featuring a 1,048,576-token context window. Engineered for dialogue, instruction following, and versatile text generation.

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Models / Muse Spark 1.2 ContributorID: meta/muse-spark-1.2-contributor

Context window

Maximum input context length.

1.05M

tokens

Maker

Meta

Served On: Meta

Specifications

Context window, ranked against other chat models

Proportional scale: 0 to 1.05M tokens. Not ranked, no published context window: qwen-plus-2025-09-11, voxtral-small-24b-2507, qwen3.6-plus-2026-04-02.

Context window

1.0M

tokens
Max output

—

Modality

chat

Vision
Function calling
System prompt

Pricing

Rates are read live

Pricing for muse-spark-1.2-contributor is fetched from the live catalogue on load, so it is never served from a cache that could outlive a repricing.

Availability

Not enough data yet

We have not collected enough health probes for this model to publish an uptime or latency figure. A percentage from a handful of samples is fabricated precision, so none is shown until the sample count supports one.

How Muse Spark 1.2 Contributor is billed

Billed at the provider's list price, with no per-token markup.

Exact list price
Tokens settle at the published rate of the model that served your call.
Cache discounts passed through
Provider prompt-caching discounts reach your balance with no added fee.
Cost on every response
Each response carries the x-nr-request-cost header, so you can reconcile spend per request.

More from Meta

muse-spark-1.1muse-spark-1.3-contributorNousResearch/Hermes-3-Llama-3.1-70Bmeta-models/Muse-Glimmer-30B

Start building with muse-spark-1.2-contributor

One API key, three steps. Choose your tool to begin.

  1. Get a key

    Create API key

  2. Set your API key

    export NROUTER_API_KEY="<YOUR_API_KEY>"

  3. Configure Claude Code

    Choose a tool, then copy its setup from the panel.

npm install -g @anthropic-ai/claude-code
Claude Code · meta/muse-spark-1.2-contributor
# Point Claude Code to nRouter gateway
export ANTHROPIC_BASE_URL="https://api.nrouter.ai"
export ANTHROPIC_API_KEY="$NROUTER_API_KEY"

# Launch with meta/muse-spark-1.2-contributor
claude --model meta/muse-spark-1.2-contributor

FAQs

What is Muse Spark 1.2 Contributor?

Meta language model featuring a 1,048,576-token context window. Engineered for dialogue, instruction following, and versatile text generation.

How much does Muse Spark 1.2 Contributor cost?

Muse Spark 1.2 Contributor is billed at the provider's list price on nRouter with no per-token markup — tokens settle at the exact upstream rate. Input and output rates are read live, so see the pricing section above for the current figures.

What is the context length of Muse Spark 1.2 Contributor?

Muse Spark 1.2 Contributor supports a 1,048,576-token context window.

Does Muse Spark 1.2 Contributor support tool calling and structured outputs?

No. Muse Spark 1.2 Contributor does not support tool calling, so it cannot invoke external tools or functions.

What inputs and outputs does Muse Spark 1.2 Contributor support?

Muse Spark 1.2 Contributor takes text and images as input and returns text as output.

How do I use Muse Spark 1.2 Contributor via nRouter?

Use any OpenAI-compatible client: point it at https://api.nrouter.ai/v1 with your nRouter API key and set the model to "meta/muse-spark-1.2-contributor". The quick-start panel above has a copy-paste curl command for this model.

When was Muse Spark 1.2 Contributor released?

Muse Spark 1.2 Contributor was released on October 6, 2026.

Where is the Muse Spark 1.2 Contributor documentation?

Start at nrouter.ai/docs. The quick-start guide (nrouter.ai/docs/getting-started/quick-start) covers API keys and your first request, and the API reference (nrouter.ai/docs/api-reference) lists every parameter.

What other text models does Meta have?

Other Meta text models on nRouter include Muse Spark 1.1 (nrouter.ai/models/muse-spark-1.1), Muse Spark 1.3 Contributor (nrouter.ai/models/muse-spark-1.3-contributor), Hermes 3 Llama 3.1 70B (nrouter.ai/models/nousresearch-hermes-3-llama-3.1-70b), Muse Glimmer 30B (nrouter.ai/models/meta-models-muse-glimmer-30b).