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Kimi K2.5 vs Muse Spark
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| Attribute | Kimi K2.5 | Muse Spark |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 148 | 153 |
| Coding | 47 | 76 |
| Math | 51 | 64 |
| Reasoning & Knowledge | 35 | 82 |
| Agentic & Tools | 52 | 63 |
| Specifications | ||
| Developer | Moonshot | Meta AI |
| Family | Kimi | — |
| Released | Feb 2, 2026 | Apr 8, 2026 |
| Parameters | 1T | — |
| Availability | Open weights (unrestricted) | API access |
| Context window | 262K | — |
| Price — $/M input | $0.38 | — |
| Price — $/M output | $2.02 | — |
| Inputs | text, image | — |
| Outputs | text | — |
| Benchmarks | ||
| AIME 2024/2025 | 92% | 89% |
| APEX | 14% | — |
| ARC-AGI | 65% | — |
| ARC-AGI-2 | 12% | — |
| FrontierMath | 28% | 39% |
| FrontierMath Tier 4 | 4% | 15% |
| GPQA Diamond | 88% | 90% |
| Humanity's Last Exam | 24% | 41% |
| SciCode | 49% | 52% |
| SimpleBench | 47% | — |
| SimpleQA Verified | 34% | 66% |
| SWE-bench Verified | 74% | — |
| Terminal-Bench | 43% | — |
| WebDev Arena | 1431 | 1513 |
| WeirdML | 46% | — |
| τ²-bench | 96% | 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.