Muse Spark 1.3
Muse Spark 1.3 is developed by Meta, released 2026-09-02.
Model ID: muse-spark-1.3
Single public source; verify on the official site
Input price
$1.25 / 1M tok
Output price
$4.25 / 1M tok
Blended price
$2.00 / 1M tok
Epoch Capabilities Index (ECI)
158.0
79th percentile of 107 models with an Epoch Capabilities Index (ECI) score
Epoch AI · as of 2026-09-02
Epoch Mock AIME accuracy
99.2%
Epoch AI · as of 2026-09-02
Epoch FrontierMath (T1–3) accuracy
74.4%
Epoch AI · as of 2026-09-02
Arena text rating
1495.5
96th percentile of 164 models with an Arena text rating score
LMArena · as of 2026-11-06
Arena coding rating (human preference votes, not task accuracy)
1533.0
LMArena · as of 2026-11-06
Arena math rating
1503.6
LMArena · as of 2026-11-06
Arena WebDev rating
1653.6
LMArena · as of 2026-11-06
LiveBench
Shown here only — LiveBench scores never appear in any list, table, chart, search result or JSON-LD elsewhere on this site (see data sources).
| LiveBench metric | Value | As of |
|---|---|---|
| LiveBench Global Average | 81.6 | 2026-06-25 |
| LiveBench Reasoning | 89.7 | 2026-06-25 |
| LiveBench Coding | 81.1 | 2026-06-25 |
| LiveBench Agentic Coding | 64.1 | 2026-06-25 |
| LiveBench Mathematics | 95.9 | 2026-06-25 |
| LiveBench Data Analysis | 79.6 | 2026-06-25 |
| LiveBench Language | 82.8 | 2026-06-25 |
| LiveBench Instruction Following | 78.0 | 2026-06-25 |
LiveBench leaderboard (livebench.ai, github.com/LiveBench/new-livebench), release 2026-06-25, CC BY-SA 4.0 — livebench.ai · github.com/LiveBench/new-livebench
Official list price from Meta, as recorded by
models.dev.
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reseller snapshot.
See all of Meta's models on its provider page, or browse the full model directory. Full source licenses and sync dates: /data-sources/.