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Kimi K3 vs Muse Spark
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| Attribute | Kimi K3 | Muse Spark |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 158 | 152 |
| Coding | 97 | 70 |
| Math | 82 | 63 |
| Reasoning & Knowledge | 73 | 77 |
| Agentic & Tools | 80 | 61 |
| Specifications | ||
| Developer | Moonshot | Meta AI |
| Family | Kimi | — |
| Released | Jul 16, 2026 | Apr 8, 2026 |
| Parameters | 2.8T | — |
| Availability | Open weights (non-commercial) | API access |
| Context window | 1M | — |
| Price — $/M input | $2.10 | — |
| Price — $/M output | $10.95 | — |
| Inputs | text, image, video | — |
| Outputs | text | — |
| Benchmarks | ||
| AIME 2024/2025 | 97% | 89% |
| APEX | 39% | — |
| ARC-AGI | 95% | — |
| ARC-AGI-2 | 60% | — |
| GPQA Diamond | 93% | 90% |
| Humanity's Last Exam | 47% | 41% |
| SciCode | 60% | 52% |
| SimpleBench | 61% | — |
| SimpleQA Verified | 51% | 66% |
| WebDev Arena | 1674 | 1513 |
| WeirdML | 83% | — |
| FrontierMath | — | 39% |
| FrontierMath Tier 4 | — | 15% |
| 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.