Model comparison
Grok 4.1 vs Grok 4.5
Grok 4.5 is the stronger model overall, scoring 55.0 to 41.5 on the Noometry Index.
Last verified . 18 shared benchmarks.
Summary
- They share 18 benchmarks with published results for both. Grok 4.1 scores higher in 0 categories and Grok 4.5 in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.5 leads 56.1 to 29.5.
Side by side
| Grok 4.1 | Grok 4.5 | |
|---|---|---|
| Provider | xAI | xAI |
| Noometry Index | 41.5 | 55.0 |
| Released | 2025-11-17 | 2026-07-08 |
| Weights | Proprietary | Proprietary |
| Context window | — | 500K |
| Max output | — | 500K |
| Input $ / M tokens | — | $2 |
| Output $ / M tokens | — | $6 |
| Results tracked | 19 | 52 |
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Category by category
Coding Grok 4.5 leads
Grok 4.1: 33.7 (#253), Grok 4.5: 52.2 (#35)
| Benchmark | Grok 4.1 | Grok 4.5 |
|---|---|---|
| LMArena WebDev | 1214 | 1553 |
| LMArena Coding | 1445 | 1474 |
| DeepSWE | — | 53.8% |
| FrontierCode | — | 42.4% |
| SciCode | — | 54.1% |
| WeirdML | — | 46.4% |
| ALE-Bench | — | 1,309 |
Agentic & Tool Use Grok 4.5 leads
Grok 4.1: 34.1 (#49), Grok 4.5: 44.4 (#17)
| Benchmark | Grok 4.1 | Grok 4.5 |
|---|---|---|
| APEX-Agents | — | 56.2% |
| τ²-bench Banking | — | 47.9% |
| Cybench | 39% | — |
| PostTrainBench | — | 23.4% |
| GBAEval | — | 65.4% |
| GDP.pdf | — | 14% |
| LMArena Search | — | 1213 |
| Vending-Bench 2 | — | 3,887 |
Reasoning Grok 4.5 leads
Grok 4.1: 29.5 (#91), Grok 4.5: 56.1 (#25)
| Benchmark | Grok 4.1 | Grok 4.5 |
|---|---|---|
| LMArena Hard Prompts | 1435 | 1462 |
| ARC-AGI-2 | — | 52.6% |
| SimpleBench | — | 70% |
| Kagi LLM Benchmark | — | 83.5% |
| NYT Connections (extended) | — | 79.9% |
| ARC-AGI-1 | — | 87.2% |
| CritPt | — | 15.4% |
| Chess Puzzles | — | 36% |
| DTBench | — | 96.5% |
| LMCA | — | 45.2% |
| Surface Evolver Bench | — | 74.4% |
| Epoch Capabilities Index | — | 153.92 |
Math Grok 4.5 leads
Grok 4.1: 38.9 (#120), Grok 4.5: 60.9 (#35)
| Benchmark | Grok 4.1 | Grok 4.5 |
|---|---|---|
| LMArena Math | 1422 | 1459 |
| FrontierMath (Tiers 1-3) | — | 57.2% |
| FrontierMath Tier 4 | — | 24.4% |
| OTIS Mock AIME 2024-2025 | — | 97.8% |
| ProofBench | — | 31% |
Knowledge Grok 4.5 leads
Grok 4.1: 39.5 (#133), Grok 4.5: 62.3 (#24)
| Benchmark | Grok 4.1 | Grok 4.5 |
|---|---|---|
| LMArena Expert | 1417 | 1466 |
| GPQA Diamond | — | 93.4% |
| SimpleQA Verified | — | 48.3% |
Multimodal Not comparable
Grok 4.1: —, Grok 4.5: 37.6 (#72)
| Benchmark | Grok 4.1 | Grok 4.5 |
|---|---|---|
| LMArena Vision | — | 1288 |
| Blueprint-Bench 2 | — | 27.3% |
| Furniture Assembly | — | 22.5% |
| LMArena Document | — | 1452 |
Multilingual Grok 4.5 leads
Grok 4.1: 53.4 (#68), Grok 4.5: 54.4 (#42)
| Benchmark | Grok 4.1 | Grok 4.5 |
|---|---|---|
| LMArena Non-English | 1425 | 1440 |
| LMArena Chinese | 1465 | 1496 |
| LMArena French | 1448 | 1456 |
| LMArena German | 1446 | 1446 |
| LMArena Japanese | 1397 | 1428 |
| LMArena Korean | 1407 | 1404 |
| LMArena Russian | 1434 | 1448 |
| LMArena Spanish | 1438 | 1450 |
Instruction Following Grok 4.5 leads
Grok 4.1: 73.8 (#111), Grok 4.5: 76.0 (#48)
| Benchmark | Grok 4.1 | Grok 4.5 |
|---|---|---|
| LMArena Instruction Following | 1400 | 1446 |
Long Context Grok 4.5 leads
Grok 4.1: 43.2 (#100), Grok 4.5: 44.8 (#56)
| Benchmark | Grok 4.1 | Grok 4.5 |
|---|---|---|
| LMArena Longer Query | 1416 | 1463 |
Writing & Preference Grok 4.5 leads
Grok 4.1: 62.4 (#75), Grok 4.5: 65.8 (#42)
| Benchmark | Grok 4.1 | Grok 4.5 |
|---|---|---|
| LMArena Text | 1437 | 1448 |
| LMArena Creative Writing | 1411 | 1442 |
| LMArena Multi-Turn | 1437 | 1456 |
| EQ-Bench Creative Writing | — | 1579 |
Frequently asked questions
Is Grok 4.1 better than Grok 4.5?
Grok 4.5 is the stronger model overall, scoring 55.0 to 41.5 on the Noometry Index.
Is Grok 4.1 or Grok 4.5 better for coding?
Grok 4.5 scores higher on coding benchmarks: 52.2 versus 33.7 in the Noometry coding category.
How many benchmarks do Grok 4.1 and Grok 4.5 share?
18 benchmarks have published results for both models. Grok 4.1 has 19 scored results on Noometry and Grok 4.5 has 52.