Model comparison
GPT-5.1-Codex vs Grok 2 Mini 2024 08 13
GPT-5.1-Codex is the stronger model overall, scoring 38.2 to 37.0 on the Noometry Index.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in coding, where GPT-5.1-Codex leads 41.7 to 36.4.
Side by side
| GPT-5.1-Codex | Grok 2 Mini 2024 08 13 | |
|---|---|---|
| Provider | OpenAI | xAI |
| Noometry Index | 38.2 | 37.0 |
| Released | 2025-11-12 | 2024-08-13 |
| Weights | Proprietary | Proprietary |
| Context window | 400K | — |
| Max output | 128K | — |
| Input $ / M tokens | $1.25 | — |
| Output $ / M tokens | $10 | — |
| Results tracked | 6 | 17 |
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Category by category
Coding GPT-5.1-Codex leads
GPT-5.1-Codex: 41.7 (#107), Grok 2 Mini 2024 08 13: 36.4 (#194)
| Benchmark | GPT-5.1-Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| SWE-bench Verified (bash only) | 66% | — |
| LMArena WebDev | 1337 | — |
| LMArena Coding | — | 1269 |
| ALE-Bench | 1,245 | — |
Agentic & Tool Use Not comparable
GPT-5.1-Codex: 37.8 (#32), Grok 2 Mini 2024 08 13: —
| Benchmark | GPT-5.1-Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| Terminal-Bench | 60.4% | — |
| METR Time Horizons | 70.8% | — |
Reasoning Not comparable
GPT-5.1-Codex: —, Grok 2 Mini 2024 08 13: 23.7 (#162)
| Benchmark | GPT-5.1-Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Hard Prompts | — | 1255 |
Math Grok 2 Mini 2024 08 13 leads
GPT-5.1-Codex: 29.3 (#218), Grok 2 Mini 2024 08 13: 32.8 (#185)
| Benchmark | GPT-5.1-Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| ProofBench | 9% | — |
| LMArena Math | — | 1265 |
Knowledge Not comparable
GPT-5.1-Codex: —, Grok 2 Mini 2024 08 13: 33.4 (#195)
| Benchmark | GPT-5.1-Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Expert | — | 1238 |
Multilingual Not comparable
GPT-5.1-Codex: —, Grok 2 Mini 2024 08 13: 41.6 (#203)
| Benchmark | GPT-5.1-Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Non-English | — | 1257 |
| LMArena Chinese | — | 1262 |
| LMArena French | — | 1285 |
| LMArena German | — | 1273 |
| LMArena Japanese | — | 1213 |
| LMArena Korean | — | 1195 |
| LMArena Russian | — | 1261 |
| LMArena Spanish | — | 1278 |
Instruction Following Not comparable
GPT-5.1-Codex: —, Grok 2 Mini 2024 08 13: 65.7 (#215)
| Benchmark | GPT-5.1-Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Instruction Following | — | 1245 |
Long Context Not comparable
GPT-5.1-Codex: —, Grok 2 Mini 2024 08 13: 38.4 (#191)
| Benchmark | GPT-5.1-Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Longer Query | — | 1267 |
Writing & Preference Not comparable
GPT-5.1-Codex: —, Grok 2 Mini 2024 08 13: 47.5 (#207)
| Benchmark | GPT-5.1-Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Text | — | 1281 |
| LMArena Creative Writing | — | 1242 |
| LMArena Multi-Turn | — | 1265 |
Frequently asked questions
Is GPT-5.1-Codex better than Grok 2 Mini 2024 08 13?
GPT-5.1-Codex is the stronger model overall, scoring 38.2 to 37.0 on the Noometry Index.
Is GPT-5.1-Codex or Grok 2 Mini 2024 08 13 better for coding?
GPT-5.1-Codex scores higher on coding benchmarks: 41.7 versus 36.4 in the Noometry coding category.
How many benchmarks do GPT-5.1-Codex and Grok 2 Mini 2024 08 13 share?
0 benchmarks have published results for both models. GPT-5.1-Codex has 6 scored results on Noometry and Grok 2 Mini 2024 08 13 has 17.