stack-meta.stack.json json Copy{
"osr": "1",
"kind": "stack",
"name": "Meta tiers",
"description": "Meta only: Muse Spark 1.3 Contributor for everyday requests, Muse Spark 1.1 for moderate work, Muse Spark 1.2 for hard ones - with complexity rules and a cost-aware objective.",
"targets": [
{
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],
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],
"languages": [
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],
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},
"quality_prior": 0.6,
"examples": [
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],
"primary": false,
"metadata": {
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"url": "https://openrouter.ai/meta/muse-spark-1.3-contributor",
"key": "meta/muse-spark-1.3-contributor",
"catalogue": "https://openrouter.ai/api/v1"
},
"model": "meta/muse-spark-1.3-contributor",
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"cache_read_usd_per_1m": 0.002
},
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],
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},
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},
"endpoints": [
{
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}
]
},
{
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"kind": "llm",
"name": "Muse Spark 1.1",
"description": "Muse Spark 1.1 is a multimodal reasoning model from Meta, built for agentic tasks. It accepts text, images, video, audio, and PDF documents and returns text, with a 1M-token context...",
"publisher": "Meta",
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],
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],
"languages": [
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],
"primary": false,
"metadata": {
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"ref": "1784215741",
"url": "https://openrouter.ai/meta/muse-spark-1.1",
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"catalogue": "https://openrouter.ai/api/v1"
},
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],
"reasoning": true,
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"benchmarks": {
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"coding_index": 71.3,
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"osr_index": 39.9,
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}
},
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{
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}
]
},
{
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"name": "Muse Spark 1.2",
"description": "Muse Spark 1.2 is a reasoning model from Meta, designed for complex agentic tasks. It accepts text, images, video, audio, and PDF documents, returns text, and offers a 1M-token context...",
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],
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],
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],
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},
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"examples": [
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],
"primary": false,
"metadata": {
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"ref": "1785959287",
"url": "https://openrouter.ai/meta/muse-spark-1.2",
"key": "meta/muse-spark-1.2",
"catalogue": "https://openrouter.ai/api/v1"
},
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},
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"output_modalities": [
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],
"reasoning": true,
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"benchmarks": {
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}
},
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},
"endpoints": [
{
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}
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}
],
"rules": [
{
"name": "hard-to-strongest",
"when": {
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},
"prefer": [
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]
},
{
"name": "easy-stays-cheap",
"when": {
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},
"avoid": [
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]
}
],
"objective": {
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"latency": 0.2
},
"metadata": {
"source": {
"provider": "catalogue-stacks",
"path": "meta",
"ref": "2026-09-19",
"url": "https://openrouter.ai/meta",
"key": "catalogue-stacks/meta",
"catalogue": "https://openrouter.ai/api/v1",
"generated": true
}
}
}