Model comparison
GPT-5.1-Codex vs Qwen Max
GPT-5.1-Codex is the stronger model overall, scoring 38.6 to 34.7 on the Noometry Index.
Last verified . 0 shared benchmarks.
Alibaba (Qwen)Summary
- The widest gap is in coding, where GPT-5.1-Codex leads 41.9 to 30.7.
- Qwen Max is cheaper at $1.60 / $6.40 per million input/output tokens, against $1.25 / $10 for GPT-5.1-Codex.
- GPT-5.1-Codex accepts more context: 400K tokens versus 33K.
Side by side
| GPT-5.1-Codex | Qwen Max | |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 38.6 | 34.7 |
| Released | 2025-11-12 | 2024-04-03 |
| Weights | Proprietary | Proprietary |
| Context window | 400K | 33K |
| Max output | 128K | 8K |
| Input $ / M tokens | $1.25 | $1.60 |
| Output $ / M tokens | $10 | $6.40 |
| Results tracked | 6 | 23 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding GPT-5.1-Codex leads
GPT-5.1-Codex: 41.9 (#116), Qwen Max: 30.7 (#292)
| Benchmark | GPT-5.1-Codex | Qwen Max |
|---|---|---|
| SWE-bench Verified (bash only) | 66% | — |
| Aider Polyglot | — | 21.8% |
| LMArena WebDev | 1337 | — |
| LMArena Coding | — | 1288 |
| ALE-Bench | 1,245 | — |
Agentic & Tool Use Not comparable
GPT-5.1-Codex: 38.0 (#33), Qwen Max: —
| Benchmark | GPT-5.1-Codex | Qwen Max |
|---|---|---|
| Terminal-Bench | 60.4% | — |
| METR Time Horizons | 70.8% | — |
Reasoning Not comparable
GPT-5.1-Codex: —, Qwen Max: 25.1 (#151)
| Benchmark | GPT-5.1-Codex | Qwen Max |
|---|---|---|
| LMArena Hard Prompts | — | 1269 |
Math GPT-5.1-Codex leads
GPT-5.1-Codex: 30.3 (#235), Qwen Max: 22.3 (#276)
| Benchmark | GPT-5.1-Codex | Qwen Max |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 16.1% |
| ProofBench | 9% | — |
| LMArena Math | — | 1275 |
| MATH Level 5 | — | 67.2% |
| FrontierMath (Feb 2025 set) | — | 1% |
Knowledge Not comparable
GPT-5.1-Codex: —, Qwen Max: 30.3 (#228)
| Benchmark | GPT-5.1-Codex | Qwen Max |
|---|---|---|
| GPQA Diamond | — | 56.1% |
| LMArena Expert | — | 1248 |
Multilingual Not comparable
GPT-5.1-Codex: —, Qwen Max: 41.8 (#202)
| Benchmark | GPT-5.1-Codex | Qwen Max |
|---|---|---|
| LMArena Non-English | — | 1263 |
| LMArena Chinese | — | 1254 |
| LMArena French | — | 1330 |
| LMArena German | — | 1254 |
| LMArena Japanese | — | 1205 |
| LMArena Korean | — | 1142 |
| LMArena Russian | — | 1274 |
| LMArena Spanish | — | 1290 |
Instruction Following Not comparable
GPT-5.1-Codex: —, Qwen Max: 66.5 (#208)
| Benchmark | GPT-5.1-Codex | Qwen Max |
|---|---|---|
| LMArena Instruction Following | — | 1262 |
Long Context Not comparable
GPT-5.1-Codex: —, Qwen Max: 39.4 (#180)
| Benchmark | GPT-5.1-Codex | Qwen Max |
|---|---|---|
| Fiction.LiveBench | — | 66.7% |
| LMArena Longer Query | — | 1288 |
Writing & Preference Not comparable
GPT-5.1-Codex: —, Qwen Max: 47.8 (#205)
| Benchmark | GPT-5.1-Codex | Qwen Max |
|---|---|---|
| LMArena Text | — | 1282 |
| LMArena Creative Writing | — | 1248 |
| LMArena Multi-Turn | — | 1277 |
Frequently asked questions
Is GPT-5.1-Codex better than Qwen Max?
GPT-5.1-Codex is the stronger model overall, scoring 38.6 to 34.7 on the Noometry Index.
Which is cheaper, GPT-5.1-Codex or Qwen Max?
Qwen Max is cheaper. It lists at $1.60 per million input tokens and $6.40 per million output tokens; GPT-5.1-Codex lists at $1.25 and $10.
Is GPT-5.1-Codex or Qwen Max better for coding?
GPT-5.1-Codex scores higher on coding benchmarks: 41.9 versus 30.7 in the Noometry coding category.
Which has the bigger context window?
GPT-5.1-Codex does, with 400K tokens against 33K.
How many benchmarks do GPT-5.1-Codex and Qwen Max share?
0 benchmarks have published results for both models. GPT-5.1-Codex has 6 scored results on Noometry and Qwen Max has 23.