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Muse Spark 1.3

muse-spark-1.3

Frontier multimodal reasoning model for long-horizon agentic work

Intelligence
45.1
Context
1.04M
Training cutoff
--
Added
2026-09-03

Providers

One route serves Muse Spark 1.3, and every figure below is measured on it. Where the selected window has too little traffic, the figure names what it is based on instead.

Meta only route

muse-spark-1.3

UptimeNo data
Input / 1M
$1.25
Output / 1M
$4.25
TTFT
-- no requests yet
Output rate
-- needs live traffic
1.04M context 1,048,576 max output cache $0.15 read / $1.25 write per 1M warming · 30m

TTFT is the median time to the first visible answer token over real ModelRelay requests, with a fixed prompt standing in for models that have no traffic yet. Speed ranks by it. Intelligence is the Artificial Analysis Intelligence Index.