Muse Spark 1.3 vs Kimi K3
Muse Spark 1.3 (Meta) and Kimi K3 (Moonshot AI) compared on price, context window, speed and independent benchmarks. Muse Spark 1.3 both scores higher on the Artificial Analysis Intelligence Index (60.8 vs 59.7) and is cheaper on a blended basis — 3.0× less than Kimi K3.
| Muse Spark 1.3 | Kimi K3 | |
|---|---|---|
| Provider | Meta | Moonshot AI |
| Input $/1M | $1.25 | $3.00 |
| Output $/1M | $4.25 | $15.0 |
| Blended $/1M (3:1) | $2.00 | $6.00 |
| Cached input $/1M | $0.15 | $0.30 |
| Context window | 1.0M | 1.0M |
| Knowledge cutoff | — | — |
| License | proprietary | open weights |
| Speed (tok/s) | 115 | 38 |
| Artificial Analysis Intelligence Index | 60.8 | 59.7 |
| LMArena Elo | — | 1476 |
| GPQA Diamond | 94.1% | 93.5% |
| SWE-bench Verified | — | 93.4% |
| Humanity's Last Exam | 47.5% | 46.9% |
| MMMU | — | 81.6% |