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Claude Opus 4.1 vs Muse Spark
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| Attribute | Claude Opus 4.1 | Muse Spark |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 144 | 153 |
| Coding | 30 | 76 |
| Math | 17 | 65 |
| Reasoning & Knowledge | 29 | 82 |
| Agentic & Tools | 20 | 63 |
| Specifications | ||
| Developer | Anthropic | Meta AI |
| Family | Claude | — |
| Released | Aug 5, 2025 | Apr 8, 2026 |
| Parameters | — | — |
| Availability | API access | API access |
| Context window | 200K | — |
| Price — $/M input | $15.00 | — |
| Price — $/M output | $75.00 | — |
| Inputs | image, text, file | — |
| Outputs | text | — |
| Benchmarks | ||
| AIME 2024/2025 | 69% | 89% |
| FrontierMath | 7% | 39% |
| FrontierMath Tier 4 | 4% | 15% |
| GDPval (win/tie rate) | 48% | — |
| GPQA Diamond | 77% | 90% |
| Humanity's Last Exam | 12% | 41% |
| METR task horizon | 1.9 h | — |
| SimpleBench | 60% | — |
| SimpleQA Verified | 35% | 66% |
| SWE-bench Verified | 73% | — |
| Terminal-Bench | 38% | — |
| WebDev Arena | 1386 | 1513 |
| WeirdML | 43% | — |
| SciCode | — | 52% |
| τ²-bench | — | 92% |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.