Model comparison
GPT-5.3 Chat vs Grok 2 Mini 2024 08 13
GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 37.7 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. GPT-5.3 Chat scores higher in 8 categories and Grok 2 Mini 2024 08 13 in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where GPT-5.3 Chat leads 63.1 to 47.3.
Side by side
| GPT-5.3 Chat | Grok 2 Mini 2024 08 13 | |
|---|---|---|
| Provider | OpenAI | xAI |
| Noometry Index | 42.8 | 37.7 |
| Released | 2026-03-03 | 2024-08-13 |
| Weights | Proprietary | Proprietary |
| Context window | 128K | — |
| Max output | 16K | — |
| Input $ / M tokens | $1.75 | — |
| Output $ / M tokens | $14 | — |
| Results tracked | 18 | 17 |
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Category by category
Coding GPT-5.3 Chat leads
GPT-5.3 Chat: 41.4 (#124), Grok 2 Mini 2024 08 13: 37.0 (#199)
| Benchmark | GPT-5.3 Chat | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Coding | 1408 | 1269 |
Reasoning GPT-5.3 Chat leads
GPT-5.3 Chat: 28.5 (#102), Grok 2 Mini 2024 08 13: 24.8 (#159)
| Benchmark | GPT-5.3 Chat | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Hard Prompts | 1399 | 1255 |
Math GPT-5.3 Chat leads
GPT-5.3 Chat: 38.2 (#142), Grok 2 Mini 2024 08 13: 35.4 (#185)
| Benchmark | GPT-5.3 Chat | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Math | 1389 | 1265 |
Knowledge GPT-5.3 Chat leads
GPT-5.3 Chat: 38.8 (#140), Grok 2 Mini 2024 08 13: 33.9 (#200)
| Benchmark | GPT-5.3 Chat | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Expert | 1397 | 1238 |
Multilingual GPT-5.3 Chat leads
GPT-5.3 Chat: 50.3 (#124), Grok 2 Mini 2024 08 13: 41.4 (#208)
| Benchmark | GPT-5.3 Chat | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Non-English | 1382 | 1257 |
| LMArena Chinese | 1432 | 1262 |
| LMArena French | 1397 | 1286 |
| LMArena German | 1384 | 1273 |
| LMArena Japanese | 1352 | 1213 |
| LMArena Korean | 1346 | 1195 |
| LMArena Russian | 1400 | 1261 |
| LMArena Spanish | 1371 | 1279 |
Instruction Following GPT-5.3 Chat leads
GPT-5.3 Chat: 72.8 (#129), Grok 2 Mini 2024 08 13: 65.5 (#220)
| Benchmark | GPT-5.3 Chat | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Instruction Following | 1378 | 1245 |
Long Context GPT-5.3 Chat leads
GPT-5.3 Chat: 42.6 (#120), Grok 2 Mini 2024 08 13: 38.4 (#196)
| Benchmark | GPT-5.3 Chat | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Longer Query | 1396 | 1266 |
Writing & Preference GPT-5.3 Chat leads
GPT-5.3 Chat: 63.1 (#68), Grok 2 Mini 2024 08 13: 47.3 (#211)
| Benchmark | GPT-5.3 Chat | Grok 2 Mini 2024 08 13 |
|---|---|---|
| LMArena Text | 1389 | 1281 |
| LMArena Creative Writing | 1355 | 1242 |
| LMArena Multi-Turn | 1412 | 1265 |
| EQ-Bench Creative Writing | 1690 | — |
Frequently asked questions
Is GPT-5.3 Chat better than Grok 2 Mini 2024 08 13?
GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 37.7 on the Noometry Index.
Is GPT-5.3 Chat or Grok 2 Mini 2024 08 13 better for coding?
GPT-5.3 Chat scores higher on coding benchmarks: 41.4 versus 37.0 in the Noometry coding category.
How many benchmarks do GPT-5.3 Chat and Grok 2 Mini 2024 08 13 share?
17 benchmarks have published results for both models. GPT-5.3 Chat has 18 scored results on Noometry and Grok 2 Mini 2024 08 13 has 17.