Muse Spark Open
ECI#36
155Muse Spark Open is an open-weights model from Meta AI, released October 15, 2026. It has an ECI score of 155 and ranks 36th of 253 tracked models.
Muse Spark Open vs select alternatives
| Domain | Benchmark | Muse Spark Open | |||
|---|---|---|---|---|---|
ECI scoreBest score 169 | 155 | 155 | 157 | 155 | |
| Ranking | #36 | #38 | #23 | #37 | |
| Agent | APEX-AgentsBest score 87% | ||||
| Mathematics | FrontierMath Tiers 1-3 (v2)Best score 94% | ||||
FrontierMath Tier 4 (v2)Best score 100% | |||||
OTIS Mock AIME 2024-2025Best score 100% | |||||
| Science | CritPt v1Best score 32% | ||||
SciCodeBest score 67% | |||||
GPQA DiamondBest score 96% | |||||
| Software engineering | ALE-BenchBest score 2951 | 1590 | — | 1688 | — |
| World knowledge | SimpleQA VerifiedBest score 76% |
