Model comparison
GPT-5.3 Codex vs Grok 2 Mini 2024 08 13
GPT-5.3 Codex is the stronger model overall, scoring 45.8 to 37.7 on the Noometry Index.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in coding, where GPT-5.3 Codex leads 48.6 to 37.0.
Side by side
| GPT-5.3 Codex | Grok 2 Mini 2024 08 13 | |
|---|---|---|
| Provider | OpenAI | xAI |
| Noometry Index | 45.8 | 37.7 |
| Released | 2026-02-05 | 2024-08-13 |
| Weights | Proprietary | Proprietary |
| Context window | 400K | — |
| Max output | 128K | — |
| Input $ / M tokens | $1.75 | — |
| Output $ / M tokens | $14 | — |
| Results tracked | 8 | 17 |
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Category by category
Coding GPT-5.3 Codex leads
GPT-5.3 Codex: 48.6 (#56), Grok 2 Mini 2024 08 13: 37.0 (#199)
| Benchmark | GPT-5.3 Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| SWE-bench Verified | 74.8% | — |
| LMArena WebDev | 1409 | — |
| WeirdML | 79.3% | — |
| LMArena Coding | — | 1269 |
| ALE-Bench | 1,655 | — |
Agentic & Tool Use Not comparable
GPT-5.3 Codex: 48.0 (#9), Grok 2 Mini 2024 08 13: —
| Benchmark | GPT-5.3 Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| Terminal-Bench | 78.4% | — |
| METR Time Horizons | 74.5% | — |
| Vending-Bench 2 | 5,940 | — |
Reasoning Not comparable
GPT-5.3 Codex: —, Grok 2 Mini 2024 08 13: 24.8 (#159)
| Benchmark | GPT-5.3 Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Hard Prompts | — | 1255 |
| Epoch Capabilities Index | 156.77 | — |
Math Not comparable
GPT-5.3 Codex: —, Grok 2 Mini 2024 08 13: 35.4 (#185)
| Benchmark | GPT-5.3 Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Math | — | 1265 |
Knowledge Not comparable
GPT-5.3 Codex: —, Grok 2 Mini 2024 08 13: 33.9 (#200)
| Benchmark | GPT-5.3 Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Expert | — | 1238 |
Multilingual Not comparable
GPT-5.3 Codex: —, Grok 2 Mini 2024 08 13: 41.4 (#208)
| Benchmark | GPT-5.3 Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Non-English | — | 1257 |
| LMArena Chinese | — | 1262 |
| LMArena French | — | 1286 |
| LMArena German | — | 1273 |
| LMArena Japanese | — | 1213 |
| LMArena Korean | — | 1195 |
| LMArena Russian | — | 1261 |
| LMArena Spanish | — | 1279 |
Instruction Following Not comparable
GPT-5.3 Codex: —, Grok 2 Mini 2024 08 13: 65.5 (#220)
| Benchmark | GPT-5.3 Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Instruction Following | — | 1245 |
Long Context Not comparable
GPT-5.3 Codex: —, Grok 2 Mini 2024 08 13: 38.4 (#196)
| Benchmark | GPT-5.3 Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Longer Query | — | 1266 |
Writing & Preference Not comparable
GPT-5.3 Codex: —, Grok 2 Mini 2024 08 13: 47.3 (#211)
| Benchmark | GPT-5.3 Codex | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Text | — | 1281 |
| LMArena Creative Writing | — | 1242 |
| LMArena Multi-Turn | — | 1265 |
Frequently asked questions
Is GPT-5.3 Codex better than Grok 2 Mini 2024 08 13?
GPT-5.3 Codex is the stronger model overall, scoring 45.8 to 37.7 on the Noometry Index.
Is GPT-5.3 Codex or Grok 2 Mini 2024 08 13 better for coding?
GPT-5.3 Codex scores higher on coding benchmarks: 48.6 versus 37.0 in the Noometry coding category.
How many benchmarks do GPT-5.3 Codex and Grok 2 Mini 2024 08 13 share?
0 benchmarks have published results for both models. GPT-5.3 Codex has 8 scored results on Noometry and Grok 2 Mini 2024 08 13 has 17.