Qwen: Qwen3.5-35B-A3B wins on more metrics (6 of 8), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | Qwen: Qwen3.5-35B-A3B | xAI: Grok 4.20 |
|---|---|---|
| Intelligence Index | 30.7✓ | 29.7 |
| Coding Index | 16.8 | 25.4✓ |
| GPQA Diamond | 82%✓ | 79% |
| Design Arena Elo | — | — |
| Speed (tokens/sec) | 149✓ | 81 |
| Latency | 316ms✓ | 701ms |
| Input price /M | $0.140✓ | $1.25 |
| Output price /M | $1.00✓ | $2.50 |
| Context window | 262K | 2M✓ |
| Capabilities | ReasoningToolsJSONVision | ReasoningToolsJSONVision |