Model comparison
GPT-5.1-Codex vs Qwen1.5-7B
GPT-5.1-Codex is the stronger model overall, scoring 38.2 to 30.8 on the Noometry Index.
Last verified . 0 shared benchmarks.
Alibaba (Qwen)Summary
- The widest gap is in coding, where GPT-5.1-Codex leads 41.7 to 31.6.
- Qwen1.5-7B has downloadable open weights; the other is API-only.
Side by side
| GPT-5.1-Codex | Qwen1.5-7B | |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 38.2 | 30.8 |
| Released | 2025-11-12 | 2024-02-04 |
| Weights | Proprietary | Open |
| Context window | 400K | — |
| Max output | 128K | — |
| Input $ / M tokens | $1.25 | — |
| Output $ / M tokens | $10 | — |
| Results tracked | 6 | 13 |
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Category by category
Coding GPT-5.1-Codex leads
GPT-5.1-Codex: 41.7 (#107), Qwen1.5-7B: 31.6 (#271)
| Benchmark | GPT-5.1-Codex | Qwen1.5-7B |
|---|---|---|
| SWE-bench Verified (bash only) | 66% | — |
| LMArena WebDev | 1337 | — |
| LMArena Coding | — | 1107 |
| ALE-Bench | 1,245 | — |
Agentic & Tool Use Not comparable
GPT-5.1-Codex: 37.8 (#32), Qwen1.5-7B: —
| Benchmark | GPT-5.1-Codex | Qwen1.5-7B |
|---|---|---|
| Terminal-Bench | 60.4% | — |
| METR Time Horizons | 70.8% | — |
Reasoning Not comparable
GPT-5.1-Codex: —, Qwen1.5-7B: 19.5 (#237)
| Benchmark | GPT-5.1-Codex | Qwen1.5-7B |
|---|---|---|
| LMArena Hard Prompts | — | 1066 |
Math Too close to call
GPT-5.1-Codex: 29.3 (#218), Qwen1.5-7B: 29.0 (#222)
| Benchmark | GPT-5.1-Codex | Qwen1.5-7B |
|---|---|---|
| ProofBench | 9% | — |
| LMArena Math | — | 1080 |
Knowledge Not comparable
GPT-5.1-Codex: —, Qwen1.5-7B: 28.2 (#239)
| Benchmark | GPT-5.1-Codex | Qwen1.5-7B |
|---|---|---|
| LMArena Expert | — | 1055 |
| MMLU | — | 62.6% |
Multilingual Not comparable
GPT-5.1-Codex: —, Qwen1.5-7B: 28.6 (#266)
| Benchmark | GPT-5.1-Codex | Qwen1.5-7B |
|---|---|---|
| LMArena Non-English | — | 1058 |
| LMArena Chinese | — | 1140 |
| LMArena Russian | — | 1006 |
Instruction Following Not comparable
GPT-5.1-Codex: —, Qwen1.5-7B: 54.4 (#276)
| Benchmark | GPT-5.1-Codex | Qwen1.5-7B |
|---|---|---|
| LMArena Instruction Following | — | 1058 |
Long Context Not comparable
GPT-5.1-Codex: —, Qwen1.5-7B: 33.1 (#261)
| Benchmark | GPT-5.1-Codex | Qwen1.5-7B |
|---|---|---|
| LMArena Longer Query | — | 1090 |
Writing & Preference Not comparable
GPT-5.1-Codex: —, Qwen1.5-7B: 29.8 (#288)
| Benchmark | GPT-5.1-Codex | Qwen1.5-7B |
|---|---|---|
| LMArena Text | — | 1084 |
| LMArena Creative Writing | — | 1035 |
| LMArena Multi-Turn | — | 1061 |
Frequently asked questions
Is GPT-5.1-Codex better than Qwen1.5-7B?
GPT-5.1-Codex is the stronger model overall, scoring 38.2 to 30.8 on the Noometry Index.
Is GPT-5.1-Codex or Qwen1.5-7B better for coding?
GPT-5.1-Codex scores higher on coding benchmarks: 41.7 versus 31.6 in the Noometry coding category.
How many benchmarks do GPT-5.1-Codex and Qwen1.5-7B share?
0 benchmarks have published results for both models. GPT-5.1-Codex has 6 scored results on Noometry and Qwen1.5-7B has 13.