Muse Spark 1.2
ECI#27
155Muse Spark 1.2 is a closed-weights model from Meta AI, released August 5, 2026. It has an ECI score of 155 and ranks 27th of 251 tracked models. At the time of its release, it ranked 18th of 239 tracked models.
Muse Spark 1.2 vs select alternatives
| Domain | Benchmark | Muse Spark 1.2 | |||
|---|---|---|---|---|---|
ECI scoreBest score 167 | 155 | 154 | 155 | 156 | |
| Ranking | #27 | #33 | #24 | #22 | |
| Agent | APEX-AgentsBest score 79% | ||||
| Multimodal | GDP.pdfBest score 31% | ||||
| Science | CritPtBest score 32% | ||||
SciCodeBest score 63% | |||||
| Software engineering | Text Arena (Coding)Best score 1800 | 1534 | 1542 | 1581 | 1614 |
FrontierSWE (v2)Best score 66% | |||||
DeepSWE v1.1Best score 74% | |||||
WeirdML (v2)Best score 94% | |||||
| World knowledge | SimpleQA VerifiedBest score 76% |
