Qwen: Qwen3.5 Plus 2026-04-20 wins on more metrics (4 of 7), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | Qwen2.5 72B Instruct | Qwen: Qwen3.5 Plus 2026-04-20 |
|---|---|---|
| Intelligence Index | — | — |
| Coding Index | 11.9✓ | — |
| GPQA Diamond | 49%✓ | — |
| Design Arena Elo | — | — |
| Speed (tokens/sec) | 15 | 52✓ |
| Latency | 3.1s | 1.5s✓ |
| Input price /M | $0.360 | $0.300✓ |
| Output price /M | $0.400✓ | $1.80 |
| Context window | 131K | 1M✓ |
| Capabilities | ToolsJSON | ReasoningToolsJSONVision |