Model comparison
GPT-5.2 Codex vs Qwen3.5 Max Preview
Qwen3.5 Max Preview is the stronger model overall, scoring 44.7 to 42.2 on the Noometry Index.
Last verified . 0 shared benchmarks.
Alibaba (Qwen)Side by side
| GPT-5.2 Codex | Qwen3.5 Max Preview | |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 42.2 | 44.7 |
| Released | 2025-12-18 | — |
| Weights | Proprietary | Proprietary |
| Context window | 400K | — |
| Max output | 128K | — |
| Input $ / M tokens | $1.75 | — |
| Output $ / M tokens | $14 | — |
| Results tracked | 5 | 17 |
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Category by category
Coding GPT-5.2 Codex leads
GPT-5.2 Codex: 45.4 (#66), Qwen3.5 Max Preview: 43.4 (#79)
| Benchmark | GPT-5.2 Codex | Qwen3.5 Max Preview |
|---|---|---|
| SWE-bench Verified (bash only) | 72.8% | — |
| LMArena WebDev | 1339 | — |
| SWE-bench Multilingual | 66.3% | — |
| LMArena Coding | — | 1488 |
| ALE-Bench | 1,300 | — |
Agentic & Tool Use Not comparable
GPT-5.2 Codex: 40.7 (#20), Qwen3.5 Max Preview: —
| Benchmark | GPT-5.2 Codex | Qwen3.5 Max Preview |
|---|---|---|
| Terminal-Bench | 66.5% | — |
Reasoning Not comparable
GPT-5.2 Codex: —, Qwen3.5 Max Preview: 29.6 (#81)
| Benchmark | GPT-5.2 Codex | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Hard Prompts | — | 1483 |
Math Not comparable
GPT-5.2 Codex: —, Qwen3.5 Max Preview: 37.3 (#99)
| Benchmark | GPT-5.2 Codex | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Math | — | 1473 |
Knowledge Not comparable
GPT-5.2 Codex: —, Qwen3.5 Max Preview: 41.1 (#104)
| Benchmark | GPT-5.2 Codex | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Expert | — | 1489 |
Multilingual Not comparable
GPT-5.2 Codex: —, Qwen3.5 Max Preview: 56.4 (#21)
| Benchmark | GPT-5.2 Codex | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Non-English | — | 1465 |
| LMArena Chinese | — | 1534 |
| LMArena French | — | 1483 |
| LMArena German | — | 1487 |
| LMArena Japanese | — | 1497 |
| LMArena Korean | — | 1438 |
| LMArena Russian | — | 1472 |
| LMArena Spanish | — | 1470 |
Instruction Following Not comparable
GPT-5.2 Codex: —, Qwen3.5 Max Preview: 77.2 (#28)
| Benchmark | GPT-5.2 Codex | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Instruction Following | — | 1467 |
Long Context Not comparable
GPT-5.2 Codex: —, Qwen3.5 Max Preview: 45.2 (#44)
| Benchmark | GPT-5.2 Codex | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Longer Query | — | 1477 |
Writing & Preference Not comparable
GPT-5.2 Codex: —, Qwen3.5 Max Preview: 66.1 (#39)
| Benchmark | GPT-5.2 Codex | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Text | — | 1471 |
| LMArena Creative Writing | — | 1464 |
| LMArena Multi-Turn | — | 1478 |
Frequently asked questions
Is GPT-5.2 Codex better than Qwen3.5 Max Preview?
Qwen3.5 Max Preview is the stronger model overall, scoring 44.7 to 42.2 on the Noometry Index.
Is GPT-5.2 Codex or Qwen3.5 Max Preview better for coding?
GPT-5.2 Codex scores higher on coding benchmarks: 45.4 versus 43.4 in the Noometry coding category.
How many benchmarks do GPT-5.2 Codex and Qwen3.5 Max Preview share?
0 benchmarks have published results for both models. GPT-5.2 Codex has 5 scored results on Noometry and Qwen3.5 Max Preview has 17.