DeepSeek: DeepSeek V4 Pro vs Z.ai: GLM 5.1
DeepSeek: DeepSeek V4 Pro wins on more metrics (7 of 9), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | DeepSeek: DeepSeek V4 Pro | Z.ai: GLM 5.1 |
|---|---|---|
| Intelligence Index | 44.3✓ | 40.2 |
| Coding Index | 59.4✓ | 55.8 |
| GPQA Diamond | 89%✓ | 87% |
| Design Arena Elo | 1324✓ | — |
| Speed (tokens/sec) | 56 | 101✓ |
| Latency | 549ms | 304ms✓ |
| Input price /M | $0.435✓ | $0.966 |
| Output price /M | $0.870✓ | $3.04 |
| Context window | 1.0M✓ | 203K |
| Capabilities | ReasoningToolsJSON | ReasoningToolsJSON |