# Grok 4.5 vs Magistral Medium

> Grok 4.5 is the stronger model overall, scoring 55.0 to 34.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-4-5-vs-magistral-medium
- Last updated: 2026-10-10
- Shared benchmarks: 22

## Summary

- They share 22 benchmarks with published results for both. Grok 4.5 scores higher in 8 categories and Magistral Medium in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.5 leads 56.0 to 8.7.
- The biggest single-benchmark swing is ARC-AGI-1: 87.2% for Grok 4.5 and 6.1% for Magistral Medium.
- Magistral Medium is cheaper at $2 / $5 per million input/output tokens, against $2 / $6 for Grok 4.5.
- Grok 4.5 accepts more context: 500K tokens versus 128K.
- Magistral Medium has downloadable open weights; the other is API-only.

## Snapshot

| | Grok 4.5 | Magistral Medium |
|---|---|---|
| Provider | xAI | Mistral AI |
| Noometry Index | 55.0 | 34.8 |
| Rank | 22 | 224 |
| Context | 500K | 128K |
| Input $/M | $2 | $2 |
| Output $/M | $6 | $5 |
| Weights | Proprietary | Open |

## Coding

- Grok 4.5: 51.7 (#34)
- Magistral Medium: 38.6 (#161)

| Benchmark | Grok 4.5 | Magistral Medium |
|---|---|---|
| SciCode | 54.1% | 39.2% |
| LMArena Coding | 1473 | 1319 |
| DeepSWE | 53.8% | — |
| FrontierCode | 42.4% | — |
| LMArena WebDev | 1552 | — |
| WeirdML | 46.4% | — |
| ALE-Bench | 1,309 | — |

## Agentic & Tool Use

- Grok 4.5: 44.4 (#15)
- Magistral Medium: —

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

## Reasoning

- Grok 4.5: 56.0 (#23)
- Magistral Medium: 8.7 (#342)

| Benchmark | Grok 4.5 | Magistral Medium |
|---|---|---|
| ARC-AGI-2 | 52.6% | 0% |
| Kagi LLM Benchmark | 83.5% | 16.2% |
| ARC-AGI-1 | 87.2% | 6.1% |
| CritPt | 15.4% | 0.3% |
| LMArena Hard Prompts | 1462 | 1267 |
| SimpleBench | 70% | — |
| NYT Connections (extended) | 79.9% | — |
| Chess Puzzles | 36% | — |
| DTBench | 96.5% | — |
| LMCA | 45.2% | — |
| Surface Evolver Bench | 74.4% | — |
| Epoch Capabilities Index | 154.02 | — |

## Math

- Grok 4.5: 60.7 (#29)
- Magistral Medium: 32.4 (#187)

| Benchmark | Grok 4.5 | Magistral Medium |
|---|---|---|
| LMArena Math | 1457 | 1249 |
| FrontierMath (Tiers 1-3) | 57.2% | — |
| FrontierMath Tier 4 | 24.4% | — |
| OTIS Mock AIME 2024-2025 | 97.8% | — |
| ProofBench | 31% | — |

## Knowledge

- Grok 4.5: 62.3 (#21)
- Magistral Medium: 32.9 (#199)

| Benchmark | Grok 4.5 | Magistral Medium |
|---|---|---|
| LMArena Expert | 1466 | 1222 |
| GPQA Diamond | 93.4% | — |
| SimpleQA Verified | 48.3% | — |

## Multimodal

- Grok 4.5: 37.8 (#63)
- Magistral Medium: —

| Benchmark | Grok 4.5 | Magistral Medium |
|---|---|---|
| LMArena Vision | 1287 | — |
| Blueprint-Bench 2 | 27.3% | — |
| Furniture Assembly | 22.5% | — |
| LMArena Document | 1452 | — |

## Multilingual

- Grok 4.5: 54.5 (#43)
- Magistral Medium: 39.8 (#219)

| Benchmark | Grok 4.5 | Magistral Medium |
|---|---|---|
| LMArena Non-English | 1439 | 1232 |
| LMArena Chinese | 1497 | 1225 |
| LMArena French | 1458 | 1268 |
| LMArena German | 1448 | 1248 |
| LMArena Japanese | 1425 | 1176 |
| LMArena Korean | 1402 | 1125 |
| LMArena Russian | 1447 | 1224 |
| LMArena Spanish | 1452 | 1269 |

## Instruction Following

- Grok 4.5: 76.3 (#45)
- Magistral Medium: 66.2 (#207)

| Benchmark | Grok 4.5 | Magistral Medium |
|---|---|---|
| LMArena Instruction Following | 1446 | 1254 |

## Long Context

- Grok 4.5: 44.8 (#54)
- Magistral Medium: 39.3 (#178)

| Benchmark | Grok 4.5 | Magistral Medium |
|---|---|---|
| LMArena Longer Query | 1463 | 1295 |

## Writing & Preference

- Grok 4.5: 65.9 (#40)
- Magistral Medium: 46.5 (#214)

| Benchmark | Grok 4.5 | Magistral Medium |
|---|---|---|
| LMArena Text | 1448 | 1255 |
| LMArena Creative Writing | 1442 | 1245 |
| LMArena Multi-Turn | 1457 | 1275 |
| EQ-Bench Creative Writing | 1579 | — |

## FAQ

### Is Grok 4.5 better than Magistral Medium?

Grok 4.5 is the stronger model overall, scoring 55.0 to 34.8 on the Noometry Index.

### Which is cheaper, Grok 4.5 or Magistral Medium?

Magistral Medium is cheaper. It lists at $2 per million input tokens and $5 per million output tokens; Grok 4.5 lists at $2 and $6.

### Is Grok 4.5 or Magistral Medium better for coding?

Grok 4.5 scores higher on coding benchmarks: 51.7 versus 38.6 in the Noometry coding category.

### Which has the bigger context window?

Grok 4.5 does, with 500K tokens against 128K.

### How many benchmarks do Grok 4.5 and Magistral Medium share?

22 benchmarks have published results for both models. Grok 4.5 has 52 scored results on Noometry and Magistral Medium has 22.