Kimi K3 vs GLM-5.3
Kimi K3 (Moonshot AI) and GLM-5.3 (Zhipu AI (Z.ai)) compared on price, context window, speed and independent benchmarks. Kimi K3 scores higher on the Artificial Analysis Intelligence Index (59.7 vs 59.5), while GLM-5.3 is 2.8× cheaper on a blended basis. Pick Kimi K3 for the hardest tasks and GLM-5.3 when cost dominates.
| Kimi K3 | GLM-5.3 | |
|---|---|---|
| Provider | Moonshot AI | Zhipu AI (Z.ai) |
| Input $/1M | $3.00 | $1.40 |
| Output $/1M | $15.0 | $4.40 |
| Blended $/1M (3:1) | $6.00 | $2.15 |
| Cached input $/1M | $0.30 | $0.26 |
| Context window | 1.0M | 1M |
| Knowledge cutoff | — | — |
| License | open weights | open weights |
| Speed (tok/s) | 38 | 78 |
| Artificial Analysis Intelligence Index | 59.7 | 59.5 |
| LMArena Elo | 1476 | 1474 |
| GPQA Diamond | 93.5% | 91.7% |
| SWE-bench Verified | 93.4% | — |
| Humanity's Last Exam | 46.9% | 42.3% |
| MMMU | 81.6% | — |