xAI: Grok 4.5 vs Z.ai: GLM 5.2
Z.ai: GLM 5.2 wins on more metrics (5 of 8), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | xAI: Grok 4.5 | Z.ai: GLM 5.2 |
|---|---|---|
| Intelligence Index | 53.8✓ | 51.1 |
| Coding Index | 72.4✓ | 68.8 |
| GPQA Diamond | 93%✓ | 90% |
| Design Arena Elo | — | — |
| Speed (tokens/sec) | 74 | 102✓ |
| Latency | 655ms | 413ms✓ |
| Input price /M | $2.00 | $0.420✓ |
| Output price /M | $6.00 | $1.32✓ |
| Context window | 500K | 1.0M✓ |
| Capabilities | ReasoningToolsJSONVision | ReasoningToolsJSON |