GPT-5.1-Codex vs Qwen3.5 Plus 2026-04-20
| GPT-5.1-Codex | Qwen3.5 Plus 2026-04-20 | |
|---|---|---|
| Coding index | 15.3 | 39.5 |
| Benchmarks behind it | Partial, 2 benchmarks | Partial, 2 benchmarks |
| Output $/Mtok | $10.00 | $1.80 |
| Cost per solved task | $0.892 | $1.35 |
| Context window | 400K | 1M |