Z.ai: GLM 5.2 wins on more metrics (7 of 8), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | Google: Gemini 3.1 Pro Preview | Z.ai: GLM 5.2 |
|---|---|---|
| Intelligence Index | — | 50.7✓ |
| Coding Index | 39.4 | 50.7✓ |
| GPQA Diamond | 89% | 90%✓ |
| Design Arena Elo | 1346 | 1369✓ |
| Speed (tokens/sec) | 89✓ | 30 |
| Latency | 3.5s | 1.4s✓ |
| Input price /M | $2.00 | $1.40✓ |
| Output price /M | $12.00 | $4.40✓ |
| Context window | 1.0M | 1.0M |
| Capabilities | ReasoningToolsJSONVisionAudio | ReasoningToolsJSON |