Muse Spark 1.3

language modelMeta

Muse Spark 1.3 is a multimodal reasoning model from Meta for long-running agentic, multi-agent, and coding workflows. It is designed to keep track of information across extended tasks, work through...

Key facts

Made byMeta
Typelanguage model
ReleasedSeptember 2, 2026
Reads at once1,048,576 tokens
Price (API, per million tokens)$1.25 in · $4.25 out
Input → outputtext, image, video, file → text

Questions about Muse Spark 1.3

Who makes Muse Spark 1.3?

Muse Spark 1.3 is made by Meta.

When was Muse Spark 1.3 released?

We first saw Muse Spark 1.3 listed on September 2, 2026.

How much does Muse Spark 1.3 cost?

Through OpenRouter it costs $1.25 per million input tokens and $4.25 per million output tokens. Prices change, so check the provider before you build on it.

How much text can Muse Spark 1.3 read at once?

Up to 1,048,576 tokens, roughly 786.4K words.

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