# Grok 4.5 vs Qwen3.8 Max

> Qwen3.8 Max is the stronger model overall, scoring 56.0 to 55.0 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-4-5-vs-qwen3-8-max
- Last updated: 2026-10-10
- Shared benchmarks: 36

## Summary

- They share 36 benchmarks with published results for both. Grok 4.5 scores higher in 4 categories and Qwen3.8 Max in 6 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in math, where Qwen3.8 Max leads 73.1 to 60.7.
- The biggest single-benchmark swing is ProofBench: 31% for Grok 4.5 and 58% for Qwen3.8 Max.
- Both cost about the same: $2 input and $6 output per million tokens.
- Qwen3.8 Max accepts more context: 1M tokens versus 500K.

## Snapshot

| | Grok 4.5 | Qwen3.8 Max |
|---|---|---|
| Provider | xAI | Alibaba (Qwen) |
| Noometry Index | 55.0 | 56.0 |
| Rank | 22 | 21 |
| Context | 500K | 1M |
| Input $/M | $2 | $2 |
| Output $/M | $6 | $6 |
| Weights | Proprietary | Proprietary |

## Coding

- Grok 4.5: 51.7 (#34)
- Qwen3.8 Max: 52.3 (#30)

| Benchmark | Grok 4.5 | Qwen3.8 Max |
|---|---|---|
| DeepSWE | 53.8% | 57.5% |
| LMArena WebDev | 1552 | 1671 |
| SciCode | 54.1% | 52.9% |
| LMArena Coding | 1473 | 1499 |
| FrontierCode | 42.4% | — |
| FrontierSWE | — | 15.8% |
| WeirdML | 46.4% | — |
| ALE-Bench | 1,309 | — |

## Agentic & Tool Use

- Grok 4.5: 44.4 (#15)
- Qwen3.8 Max: 42.6 (#17)

| Benchmark | Grok 4.5 | Qwen3.8 Max |
|---|---|---|
| τ²-bench Banking | 47.9% | 55.1% |
| GDP.pdf | 14% | 23.2% |
| APEX-Agents | 56.2% | — |
| PostTrainBench | 23.4% | — |
| GBAEval | 65.4% | — |
| LMArena Search | 1213 | — |
| Vending-Bench 2 | 3,887 | — |

## Reasoning

- Grok 4.5: 56.0 (#23)
- Qwen3.8 Max: 53.4 (#26)

| Benchmark | Grok 4.5 | Qwen3.8 Max |
|---|---|---|
| NYT Connections (extended) | 79.9% | 88.3% |
| CritPt | 15.4% | 20% |
| Chess Puzzles | 36% | 40% |
| LMArena Hard Prompts | 1462 | 1493 |
| DTBench | 96.5% | 92% |
| LMCA | 45.2% | 46.2% |
| Epoch Capabilities Index | 154.02 | 156.69 |
| ARC-AGI-2 | 52.6% | — |
| SimpleBench | 70% | — |
| Kagi LLM Benchmark | 83.5% | — |
| ARC-AGI-1 | 87.2% | — |
| Mystery Game Puzzles | — | 38% |
| Surface Evolver Bench | 74.4% | — |

## Math

- Grok 4.5: 60.7 (#29)
- Qwen3.8 Max: 73.1 (#15)

| Benchmark | Grok 4.5 | Qwen3.8 Max |
|---|---|---|
| FrontierMath (Tiers 1-3) | 57.2% | 74.7% |
| FrontierMath Tier 4 | 24.4% | 46.3% |
| OTIS Mock AIME 2024-2025 | 97.8% | 100% |
| ProofBench | 31% | 58% |
| LMArena Math | 1457 | 1498 |

## Knowledge

- Grok 4.5: 62.3 (#21)
- Qwen3.8 Max: 61.7 (#25)

| Benchmark | Grok 4.5 | Qwen3.8 Max |
|---|---|---|
| GPQA Diamond | 93.4% | 92.7% |
| SimpleQA Verified | 48.3% | 47.3% |
| LMArena Expert | 1466 | 1504 |

## Multimodal

- Grok 4.5: 37.8 (#63)
- Qwen3.8 Max: 36.9 (#70)

| Benchmark | Grok 4.5 | Qwen3.8 Max |
|---|---|---|
| LMArena Vision | 1287 | 1314 |
| Furniture Assembly | 22.5% | 20% |
| Blueprint-Bench 2 | 27.3% | — |
| LMArena Document | 1452 | — |

## Multilingual

- Grok 4.5: 54.5 (#43)
- Qwen3.8 Max: 56.6 (#18)

| Benchmark | Grok 4.5 | Qwen3.8 Max |
|---|---|---|
| LMArena Non-English | 1439 | 1468 |
| LMArena Chinese | 1497 | 1537 |
| LMArena French | 1458 | 1502 |
| LMArena German | 1448 | 1489 |
| LMArena Japanese | 1425 | 1466 |
| LMArena Korean | 1402 | 1467 |
| LMArena Russian | 1447 | 1478 |
| LMArena Spanish | 1452 | 1495 |

## Instruction Following

- Grok 4.5: 76.3 (#45)
- Qwen3.8 Max: 77.7 (#19)

| Benchmark | Grok 4.5 | Qwen3.8 Max |
|---|---|---|
| LMArena Instruction Following | 1446 | 1478 |

## Long Context

- Grok 4.5: 44.8 (#54)
- Qwen3.8 Max: 45.5 (#30)

| Benchmark | Grok 4.5 | Qwen3.8 Max |
|---|---|---|
| LMArena Longer Query | 1463 | 1486 |

## Writing & Preference

- Grok 4.5: 65.9 (#40)
- Qwen3.8 Max: 67.0 (#31)

| Benchmark | Grok 4.5 | Qwen3.8 Max |
|---|---|---|
| LMArena Text | 1448 | 1480 |
| LMArena Creative Writing | 1442 | 1478 |
| LMArena Multi-Turn | 1457 | 1487 |
| EQ-Bench Creative Writing | 1579 | — |

## FAQ

### Is Grok 4.5 better than Qwen3.8 Max?

Qwen3.8 Max is the stronger model overall, scoring 56.0 to 55.0 on the Noometry Index.

### Which is cheaper, Grok 4.5 or Qwen3.8 Max?

Qwen3.8 Max 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 Qwen3.8 Max better for coding?

They score almost the same on coding (51.7 vs 52.3); test both on your own repository before choosing.

### Which has the bigger context window?

Qwen3.8 Max does, with 1M tokens against 500K.

### How many benchmarks do Grok 4.5 and Qwen3.8 Max share?

36 benchmarks have published results for both models. Grok 4.5 has 52 scored results on Noometry and Qwen3.8 Max has 38.