Model comparison
GPT-4.5 vs Grok 4.1
Grok 4.1 is the stronger model overall, scoring 41.5 to 37.2 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. GPT-4.5 scores higher in 1 category and Grok 4.1 in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.1 leads 29.5 to 13.9.
- The biggest single-benchmark swing is Cybench: 17.5% for GPT-4.5 and 39% for Grok 4.1.
Side by side
| GPT-4.5 | Grok 4.1 | |
|---|---|---|
| Provider | OpenAI | xAI |
| Noometry Index | 37.2 | 41.5 |
| Released | 2025-02-27 | 2025-11-17 |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 42 | 19 |
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Category by category
Coding GPT-4.5 leads
GPT-4.5: 42.2 (#109), Grok 4.1: 33.7 (#253)
| Benchmark | GPT-4.5 | Grok 4.1 |
|---|---|---|
| LMArena Coding | 1396 | 1445 |
| Aider Polyglot | 44.9% | — |
| LMArena WebDev | — | 1214 |
| WeirdML | 39.4% | — |
| LiveBench Coding | 75.2% | — |
Agentic & Tool Use Grok 4.1 leads
GPT-4.5: 27.9 (#97), Grok 4.1: 34.1 (#49)
| Benchmark | GPT-4.5 | Grok 4.1 |
|---|---|---|
| Cybench | 17.5% | 39% |
Reasoning Grok 4.1 leads
GPT-4.5: 13.9 (#330), Grok 4.1: 29.5 (#91)
| Benchmark | GPT-4.5 | Grok 4.1 |
|---|---|---|
| LMArena Hard Prompts | 1403 | 1435 |
| ARC-AGI-2 | 0.8% | — |
| SimpleBench | 34.5% | — |
| ARC-AGI-1 | 10.3% | — |
| EnigmaEval | 3.2% | — |
| LiveBench Reasoning | 71.1% | — |
| LiveBench Data Analysis | 64.3% | — |
| Epoch Capabilities Index | 136.74 | — |
| ForecastBench | 61.7 | — |
| LiveBench | 69% | — |
Math Grok 4.1 leads
GPT-4.5: 32.6 (#211), Grok 4.1: 38.9 (#120)
| Benchmark | GPT-4.5 | Grok 4.1 |
|---|---|---|
| LMArena Math | 1412 | 1422 |
| OTIS Mock AIME 2024-2025 | 37.8% | — |
| LiveBench Math | 69.3% | — |
| MATH Level 5 | 78.6% | — |
Knowledge Grok 4.1 leads
GPT-4.5: 32.5 (#211), Grok 4.1: 39.5 (#133)
| Benchmark | GPT-4.5 | Grok 4.1 |
|---|---|---|
| LMArena Expert | 1394 | 1417 |
| GPQA Diamond | 68.7% | — |
| Humanity's Last Exam | 5.4% | — |
| Confabulations | 13.6% | — |
Multimodal Not comparable
GPT-4.5: 37.6 (#71), Grok 4.1: —
| Benchmark | GPT-4.5 | Grok 4.1 |
|---|---|---|
| LMArena Vision | 1195 | — |
| VPCT | 45% | — |
Multilingual Too close to call
GPT-4.5: 52.5 (#83), Grok 4.1: 53.4 (#68)
| Benchmark | GPT-4.5 | Grok 4.1 |
|---|---|---|
| LMArena Non-English | 1413 | 1425 |
| LMArena Chinese | 1421 | 1465 |
| LMArena French | 1418 | 1448 |
| LMArena German | 1457 | 1446 |
| LMArena Japanese | 1416 | 1397 |
| LMArena Korean | 1392 | 1407 |
| LMArena Russian | 1419 | 1434 |
| LMArena Spanish | — | 1438 |
Instruction Following Grok 4.1 leads
GPT-4.5: 72.6 (#134), Grok 4.1: 73.8 (#111)
| Benchmark | GPT-4.5 | Grok 4.1 |
|---|---|---|
| LMArena Instruction Following | 1404 | 1400 |
| LiveBench Instruction Following | 72.3% | — |
Long Context Grok 4.1 leads
GPT-4.5: 40.4 (#155), Grok 4.1: 43.2 (#100)
| Benchmark | GPT-4.5 | Grok 4.1 |
|---|---|---|
| LMArena Longer Query | 1406 | 1416 |
| Fiction.LiveBench | 63.9% | — |
Writing & Preference Grok 4.1 leads
GPT-4.5: 56.9 (#134), Grok 4.1: 62.4 (#75)
| Benchmark | GPT-4.5 | Grok 4.1 |
|---|---|---|
| LMArena Text | 1417 | 1437 |
| LMArena Creative Writing | 1394 | 1411 |
| LMArena Multi-Turn | 1444 | 1437 |
| Short-Story Creative Writing | 75.6% | — |
| EQ-Bench Creative Writing | 1258 | — |
| LiveBench Language | 61.5% | — |
Frequently asked questions
Is GPT-4.5 better than Grok 4.1?
Grok 4.1 is the stronger model overall, scoring 41.5 to 37.2 on the Noometry Index.
Is GPT-4.5 or Grok 4.1 better for coding?
GPT-4.5 scores higher on coding benchmarks: 42.2 versus 33.7 in the Noometry coding category.
How many benchmarks do GPT-4.5 and Grok 4.1 share?
17 benchmarks have published results for both models. GPT-4.5 has 42 scored results on Noometry and Grok 4.1 has 19.