Muse Spark 1.2
ECI#20
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 20th of 247 tracked models. At the time of its release, it ranked 16th of 240 tracked models. At $1.25/Mtok for input tokens and $4.25/Mtok for output tokens, it is less expensive per token than similarly-capable models.
Input price$1.25 / 1M tokens
Output price$4.25 / 1M tokens
ParametersUnknown
Training computeUnknown
Muse Spark 1.2 vs select alternatives
Reasoning
| Domain | Benchmark | Muse Spark 1.2 | |||
|---|---|---|---|---|---|
ECI scoreBest score 167 | 155 | 155 | 155 | 155 | |
| Ranking | #20 | #27 | #21 | #24 | |
| Mathematics | ProofBenchBest score 100.0% | ||||
| Multimodal | GDP.pdfBest score 30.7% | ||||
| Science | CritPtBest score 32.3% | ||||
SciCodeBest score 62.0% | |||||
| Software engineering | Text Arena (Coding)Best score 1797.0 | 1533.7 | 1539.0 | 1581.6 | 1598.6 |
FrontierSWE (v2)Best score 56.3% | |||||
DeepSWEBest score 74.1% | |||||
WeirdML (v2)Best score 92.9% | |||||
| World knowledge | SimpleQA VerifiedBest score 75.6% |
