What is the context window of Meta: Muse Spark 1.3?

Meta: Muse Spark 1.3 supports a context window of 1.0M tokens.

Is Meta: Muse Spark 1.3 free to use?

Meta: Muse Spark 1.3 is a paid model. It costs $1.25 per million input tokens and $4.25 per million output tokens.

How is LLM API pricing calculated?

LLM pricing has two components: input tokens (everything you send) and output tokens (what the model generates). Total cost = (prompt tokens × input rate + output tokens × output rate) / 1,000,000 × number of requests.

Meta: Muse Spark 1.3 API Pricing — $1.25 Input / $4.25 Output per 1M Tokens

Q: How much does Meta: Muse Spark 1.3 cost?

Meta: Muse Spark 1.3 costs $1.25 per million input tokens and $4.25 per million output tokens via OpenRouter. Pricing was last updated Oct 29, 2026.

Meta: Muse Spark 1.3 by Meta — $1.25 input / $4.25 output per 1M tokens via OpenRouter. Context: 1.0M tokens. Pricing last updated Oct 29, 2026.

Input / 1M tokens

$1.25

Output / 1M tokens

$4.25

Provider

Cost at common usage volumes

Usage	Daily	Monthly
Chatbot (100/day)	$0.594	$17.81
Small app (1K/day)	$3.38	$101.25
Mid-scale (10K/day)	$46.25	$1387.50
Large scale (100K/day)	$1050.00	$31500.00

Model ID: meta/muse-spark-1.3
Data source: OpenRouter public API — updated Oct 29, 2026.

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About Meta: Muse Spark 1.3

Meta: Muse Spark 1.3 is an LLM developed by Meta. Input costs $1.25 per million tokens and output costs $4.25 per million tokens via OpenRouter. It supports a context window of 1.0M tokens.

Pricing Details

Via the OpenRouter API:

Input tokens: $1.25 per 1 million tokens
Output tokens: $4.25 per 1 million tokens

A token is roughly 0.75 words. For context: a typical user message of 100 words is approximately 133 tokens; a 500-word system prompt is about 650 tokens.

How Much Does Meta: Muse Spark 1.3 Cost?

For a typical chatbot application (1,000 requests/day, 1,000 prompt tokens and 500 output tokens per request):

Daily cost: $3.3750
Monthly cost: $101.250

Accessing Meta: Muse Spark 1.3 via OpenRouter

OpenRouter provides a unified API for 200+ LLMs including Meta: Muse Spark 1.3. You can use it with any OpenAI-compatible SDK by setting the base URL to https://openrouter.ai/api/v1 and using your OpenRouter API key. The model ID is meta/muse-spark-1.3.

Compare Meta: Muse Spark 1.3 with Other Models

Use the AI Model Cost Comparison tool to compare Meta: Muse Spark 1.3 against GPT-4o, Claude 3.5 Sonnet, Gemini 1.5 Pro, or any other model side by side. Or use the LLM API Cost Calculator to browse all 456+ models sorted by cost for your specific usage.

Frequently Asked Questions

Yes. Meta: Muse Spark 1.3 is available on OpenRouter with the model ID meta/muse-spark-1.3. OpenRouter provides a unified API compatible with OpenAI's SDK format.