Model comparison
GPT-5.1-Codex vs Wizardlm 13b
GPT-5.1-Codex is the stronger model overall, scoring 38.2 to 30.8 on the Noometry Index.
Last verified . 0 shared benchmarks.
MicrosoftSummary
- The widest gap is in coding, where GPT-5.1-Codex leads 41.7 to 29.6.
- Wizardlm 13b has downloadable open weights; the other is API-only.
Side by side
| GPT-5.1-Codex | Wizardlm 13b | |
|---|---|---|
| Provider | OpenAI | Microsoft |
| Noometry Index | 38.2 | 30.8 |
| Released | 2025-11-12 | — |
| Weights | Proprietary | Open |
| Context window | 400K | — |
| Max output | 128K | — |
| Input $ / M tokens | $1.25 | — |
| Output $ / M tokens | $10 | — |
| Results tracked | 6 | 10 |
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Category by category
Coding GPT-5.1-Codex leads
GPT-5.1-Codex: 41.7 (#107), Wizardlm 13b: 29.6 (#293)
| Benchmark | GPT-5.1-Codex | Wizardlm 13b |
|---|---|---|
| SWE-bench Verified (bash only) | 66% | — |
| LMArena WebDev | 1337 | — |
| LMArena Coding | — | 1035 |
| ALE-Bench | 1,245 | — |
Agentic & Tool Use Not comparable
GPT-5.1-Codex: 37.8 (#32), Wizardlm 13b: —
| Benchmark | GPT-5.1-Codex | Wizardlm 13b |
|---|---|---|
| Terminal-Bench | 60.4% | — |
| METR Time Horizons | 70.8% | — |
Reasoning Not comparable
GPT-5.1-Codex: —, Wizardlm 13b: 18.5 (#265)
| Benchmark | GPT-5.1-Codex | Wizardlm 13b |
|---|---|---|
| LMArena Hard Prompts | — | 1018 |
Math GPT-5.1-Codex leads
GPT-5.1-Codex: 29.3 (#218), Wizardlm 13b: 27.8 (#235)
| Benchmark | GPT-5.1-Codex | Wizardlm 13b |
|---|---|---|
| ProofBench | 9% | — |
| LMArena Math | — | 1017 |
Multilingual Not comparable
GPT-5.1-Codex: —, Wizardlm 13b: 27.3 (#272)
| Benchmark | GPT-5.1-Codex | Wizardlm 13b |
|---|---|---|
| LMArena Non-English | — | 1034 |
| LMArena Chinese | — | 1023 |
Instruction Following Not comparable
GPT-5.1-Codex: —, Wizardlm 13b: 53.7 (#280)
| Benchmark | GPT-5.1-Codex | Wizardlm 13b |
|---|---|---|
| LMArena Instruction Following | — | 1049 |
Long Context Not comparable
GPT-5.1-Codex: —, Wizardlm 13b: 32.0 (#268)
| Benchmark | GPT-5.1-Codex | Wizardlm 13b |
|---|---|---|
| LMArena Longer Query | — | 1054 |
Writing & Preference Not comparable
GPT-5.1-Codex: —, Wizardlm 13b: 30.7 (#282)
| Benchmark | GPT-5.1-Codex | Wizardlm 13b |
|---|---|---|
| LMArena Text | — | 1077 |
| LMArena Creative Writing | — | 1090 |
| LMArena Multi-Turn | — | 1047 |
Frequently asked questions
Is GPT-5.1-Codex better than Wizardlm 13b?
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 Wizardlm 13b better for coding?
GPT-5.1-Codex scores higher on coding benchmarks: 41.7 versus 29.6 in the Noometry coding category.
How many benchmarks do GPT-5.1-Codex and Wizardlm 13b share?
0 benchmarks have published results for both models. GPT-5.1-Codex has 6 scored results on Noometry and Wizardlm 13b has 10.