Compare / Muse Spark 1.2 vs Grok 4.5
Muse Spark 1.2 vs Grok 4.5
23 results from 5 sources that measured both models. Each row is in the source's own units; there is no overall winner.
| Benchmark | Metric | Muse Spark 1.2 | Grok 4.5 |
|---|---|---|---|
| APEX-Agentsreported | Tasks passed% of tasks | 36.4% | 56.2% |
| Arena (formerly LMArena)reported | Confirmed task successIPS effect estimate | -0.05 | -0.01 |
| Arena (formerly LMArena)reported | Praise over complaintIPS effect estimate | -0.12 | -0.03 |
| Arena (formerly LMArena)reported | SteerabilityIPS effect estimate | -0.05 | 0.04 |
| Arena (formerly LMArena)reported | Tool groundingIPS effect estimate | 0.00 | 0.00 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,484 | 1,465 |
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,519 | 1,465 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,448 | 1,452 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,502 | 1,488 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,475 | 1,462 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,496 | 1,465 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,472 | 1,459 |
| Artificial Analysisreported | Artificial Analysis Coding Indexindex score | 72.2 | 72.4 |
| Artificial Analysisreported | Artificial Analysis Intelligence Indexindex score | 39.6 | 38.8 |
| Artificial Analysisreported | GPQA Diamond% of questions | 90.4% | 93.1% |
| Artificial Analysisreported | Humanity's Last Exam% of questions | 45.5% | 42.7% |
| Artificial Analysisreported | Long-context reasoning (AA-LCR)% of questions | 79.0% | 79.3% |
| Artificial Analysisreported | SciCode% of problems | 57.4% | 55.0% |
| Artificial Analysisreported | Terminal-Bench 2.1% of tasks | 80.2% | 81.6% |
| Artificial Analysisreported | Terminal-Bench 4.0% of tasks | 7.1% | 10.6% |
| Artificial Analysisreported | Τ-bench banking% of tasks | 34.8% | 42.1% |
| GDP.pdfreported | Professional document tasks% of rubric | 16.0% | 14.0% |
| SimpleQA Verified (Epoch AI)reported | Correct answers% of questions | 60.3% | 48.3% |
Bold green marks the better value on that metric. Where a source reports ranges that overlap, the difference may not be meaningful; see the benchmark page for ranges.