Meta: Muse Spark 1.3 (meta/muse-spark-1.3) is a chat model from openrouter with a 1.0M-token context window; proprietary (API-only); capabilities tools, vision, reasoning; input audio, image, pdf, text, video; output text.
1.0MContext
943.7KMax output
$1.25$ / 1M in
36.4Intelligence
Pricing
Input
$1.25 / 1M tokens
Output
$4.25 / 1M tokens
Currency
USD
Note
Indicative US list price — verify with the vendor.
Indicative US list price — a reference only, verify with the vendor. Source: litellm. Last verified 2026-09-26.
Benchmarks
Intelligence index
36.4
Cited from a public third-party leaderboard — a reference, verify at the source. Source: Artificial Analysis. Last verified 2026-10-30.