Muse Spark 1.3
by Meta · ID muse-spark-1-3 · Released 2026-09 · Proprietary
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ELO Score
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MMLU
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HumanEval
1M
Context Window
$1.25
Input Price
About Muse Spark 1.3
Meta's reasoning model, released early September 2026 and delivered through Muse Code and the Meta Model API. A 1M-token context with text, image, and video input; it lands around #6 on the Artificial Analysis Intelligence Index. The standard endpoint is $1.25 input / $4.25 output per million (cached input $0.15); a contributor tier runs $0.10 / $0.20 if Meta may train on your prompts, and a higher 'max reasoning' tier is in limited preview. Prices checked 3 September 2026.
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