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Kimi K2 Thinking vs Muse Spark
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| Attribute | Kimi K2 Thinking | Muse Spark |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 146 | 153 |
| Coding | 45 | 76 |
| Math | 19 | 64 |
| Reasoning & Knowledge | 38 | 82 |
| Agentic & Tools | 26 | 63 |
| Specifications | ||
| Developer | Moonshot | Meta AI |
| Family | Kimi | — |
| Released | Nov 6, 2025 | Apr 8, 2026 |
| Parameters | 1T | — |
| Availability | Open weights (restricted use) | API access |
| Context window | 262K | — |
| Price — $/M input | $0.60 | — |
| Price — $/M output | $2.50 | — |
| Inputs | text | — |
| Outputs | text | — |
| Benchmarks | ||
| AIME 2024/2025 | 83% | 89% |
| APEX | 4% | — |
| FrontierMath | 21% | 39% |
| FrontierMath Tier 4 | 0% | 15% |
| GPQA Diamond | 84% | 90% |
| Humanity's Last Exam | 22% | 41% |
| LiveCodeBench | 85% | — |
| METR task horizon | 54 min | — |
| MMLU-Pro | 85% | — |
| SciCode | 42% | 52% |
| SimpleQA Verified | 32% | 66% |
| Terminal-Bench | 36% | — |
| WebDev Arena | 1337 | 1513 |
| WeirdML | 43% | — |
| τ²-bench | 93% | 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.