Muse Spark 1.2 Contributor

Meta· released 21 Aug 2026

meta/muse-spark-1.2-contributor

Input / 1M tokens: $0.1
Output / 1M tokens: $0.2

Context window1M tokens

Longest answer: 944K tokens

reads textreads imagereads videoreads filetool callingvisionreasoning

About

Muse Spark 1.2 Contributor is a reasoning model from Meta, described as a contributor tier for developers who want to start building at a lower cost. Its listed inputs are text, images, video and files, while its output is text. The model supports vision and tools. It has a context window of 1,048,576 tokens and a maximum output of 943,718 tokens. Listed pricing is $0.1 USD per 1M input tokens and $0.2 USD per 1M output tokens. The summary characterizes the tier as meaningfully cheaper than Muse Spark, but gives no comparison figures. Its model identifier is meta/muse-spark-1.2-contributor, and its official listing is on OpenRouter.

Who it is for

It suits developers building reasoning workflows that may take text, images, video or files as input. The listed pricing and large context window can help teams assess fit for their stack.

What is good

Accepts text, images, video and files
Supports reasoning, vision and tools
1,048,576-token context window
Input costs $0.1 USD per 1M tokens

What to know first

Outputs text only
Output costs $0.2 USD per 1M tokens

Verdict

Muse Spark 1.2 Contributor combines reasoning with several input types and tool support. Its listed token prices, context and output limits provide concrete parameters for developers considering it.

Details

Lab: Metaopenrouter.ai · 3 Oct 2026
Context: 1,049Kopenrouter.ai · 3 Oct 2026
Input price: $0.1 / 1Mopenrouter.ai · 3 Oct 2026
Output price: $0.2 / 1Mopenrouter.ai · 3 Oct 2026
Max output: 943,718 tokensopenrouter.ai · 3 Oct 2026
Inputs: text, image, video, fileopenrouter.ai · 3 Oct 2026
Open weights: Noopenrouter.ai · 3 Oct 2026

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Sources

openrouter.ai/meta/muse-spark-1.2-contributor· checked 3 Oct 2026