# Grok 4.5 vs Grok 4.6

> Grok 4.6 is the stronger model overall, scoring 56.9 to 55.0 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-4-5-vs-grok-4-6
- Last updated: 2026-10-10
- Shared benchmarks: 45

## Summary

- They share 45 benchmarks with published results for both. Grok 4.5 scores higher in 5 categories and Grok 4.6 in 5 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in coding, where Grok 4.6 leads 58.5 to 52.2.
- The biggest single-benchmark swing is WeirdML: 46.4% for Grok 4.5 and 67.3% for Grok 4.6.
- Both cost about the same: $2 input and $6 output per million tokens.

## Snapshot

| | Grok 4.5 | Grok 4.6 |
|---|---|---|
| Provider | xAI | xAI |
| Noometry Index | 55.0 | 56.9 |
| Rank | 25 | 21 |
| Context | 500K | 500K |
| Input $/M | $2 | $2 |
| Output $/M | $6 | $6 |
| Weights | Proprietary | Proprietary |

## Coding

- Grok 4.5: 52.2 (#35)
- Grok 4.6: 58.5 (#16)

| Benchmark | Grok 4.5 | Grok 4.6 |
|---|---|---|
| DeepSWE | 53.8% | 67.5% |
| FrontierCode | 42.4% | 48% |
| LMArena WebDev | 1553 | 1617 |
| SciCode | 54.1% | 56.5% |
| WeirdML | 46.4% | 67.3% |
| LMArena Coding | 1474 | 1465 |
| ALE-Bench | 1,309 | 1,508 |
| CursorBench | — | 41.4% |
| FrontierSWE | — | 25.3% |

## Agentic & Tool Use

- Grok 4.5: 44.4 (#17)
- Grok 4.6: 39.4 (#27)

| Benchmark | Grok 4.5 | Grok 4.6 |
|---|---|---|
| APEX-Agents | 56.2% | 65.3% |
| GDP.pdf | 14% | 17.2% |
| Vending-Bench 2 | 3,887 | 9,047 |
| τ²-bench Banking | 47.9% | — |
| PostTrainBench | 23.4% | — |
| GBAEval | 65.4% | — |
| LMArena Search | 1213 | — |

## Reasoning

- Grok 4.5: 56.1 (#25)
- Grok 4.6: 61.4 (#20)

| Benchmark | Grok 4.5 | Grok 4.6 |
|---|---|---|
| ARC-AGI-2 | 52.6% | 67.1% |
| SimpleBench | 70% | 75.9% |
| NYT Connections (extended) | 79.9% | 80% |
| ARC-AGI-1 | 87.2% | 87.5% |
| CritPt | 15.4% | 19.7% |
| Chess Puzzles | 36% | 40% |
| LMArena Hard Prompts | 1462 | 1447 |
| DTBench | 96.5% | 97.3% |
| LMCA | 45.2% | 48.5% |
| Epoch Capabilities Index | 153.92 | 156.44 |
| Kagi LLM Benchmark | 83.5% | — |
| EBR-Bench | — | 30.5% |
| Mystery Game Puzzles | — | 34% |
| Surface Evolver Bench | 74.4% | — |

## Math

- Grok 4.5: 60.9 (#35)
- Grok 4.6: 67.0 (#24)

| Benchmark | Grok 4.5 | Grok 4.6 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 57.2% | 66% |
| FrontierMath Tier 4 | 24.4% | 31.7% |
| OTIS Mock AIME 2024-2025 | 97.8% | 99.2% |
| ProofBench | 31% | 51% |
| LMArena Math | 1459 | 1423 |

## Knowledge

- Grok 4.5: 62.3 (#24)
- Grok 4.6: 63.3 (#20)

| Benchmark | Grok 4.5 | Grok 4.6 |
|---|---|---|
| GPQA Diamond | 93.4% | 94% |
| SimpleQA Verified | 48.3% | 49.3% |
| LMArena Expert | 1466 | 1467 |

## Multimodal

- Grok 4.5: 37.6 (#72)
- Grok 4.6: 43.6 (#23)

| Benchmark | Grok 4.5 | Grok 4.6 |
|---|---|---|
| LMArena Vision | 1288 | 1263 |
| Blueprint-Bench 2 | 27.3% | 33.2% |
| Furniture Assembly | 22.5% | 40% |
| LMArena Document | 1452 | 1452 |

## Multilingual

- Grok 4.5: 54.4 (#42)
- Grok 4.6: 53.0 (#74)

| Benchmark | Grok 4.5 | Grok 4.6 |
|---|---|---|
| LMArena Non-English | 1440 | 1420 |
| LMArena Chinese | 1496 | 1480 |
| LMArena French | 1456 | 1461 |
| LMArena German | 1446 | 1431 |
| LMArena Japanese | 1428 | 1376 |
| LMArena Korean | 1404 | 1397 |
| LMArena Russian | 1448 | 1422 |
| LMArena Spanish | 1450 | 1404 |

## Instruction Following

- Grok 4.5: 76.0 (#48)
- Grok 4.6: 75.4 (#63)

| Benchmark | Grok 4.5 | Grok 4.6 |
|---|---|---|
| LMArena Instruction Following | 1446 | 1431 |

## Long Context

- Grok 4.5: 44.8 (#56)
- Grok 4.6: 44.5 (#66)

| Benchmark | Grok 4.5 | Grok 4.6 |
|---|---|---|
| LMArena Longer Query | 1463 | 1454 |

## Writing & Preference

- Grok 4.5: 65.8 (#42)
- Grok 4.6: 62.3 (#80)

| Benchmark | Grok 4.5 | Grok 4.6 |
|---|---|---|
| LMArena Text | 1448 | 1428 |
| LMArena Creative Writing | 1442 | 1428 |
| LMArena Multi-Turn | 1456 | 1425 |
| EQ-Bench Creative Writing | 1579 | — |

## FAQ

### Is Grok 4.5 better than Grok 4.6?

Grok 4.6 is the stronger model overall, scoring 56.9 to 55.0 on the Noometry Index.

### Which is cheaper, Grok 4.5 or Grok 4.6?

Grok 4.6 is cheaper. It lists at $2 per million input tokens and $6 per million output tokens; Grok 4.5 lists at $2 and $6.

### Is Grok 4.5 or Grok 4.6 better for coding?

Grok 4.6 scores higher on coding benchmarks: 58.5 versus 52.2 in the Noometry coding category.

### Which has the bigger context window?

Both accept 500K tokens.

### How many benchmarks do Grok 4.5 and Grok 4.6 share?

45 benchmarks have published results for both models. Grok 4.5 has 52 scored results on Noometry and Grok 4.6 has 49.