# Grok 4.5 vs Olmo 3.1 32b Instruct

> Grok 4.5 is the stronger model overall, scoring 55.0 to 38.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-4-5-vs-olmo-3-1-32b-instruct
- Last updated: 2026-10-10
- Shared benchmarks: 16

## Summary

- They share 16 benchmarks with published results for both. Grok 4.5 scores higher in 8 categories and Olmo 3.1 32b Instruct in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.5 leads 56.0 to 25.4.
- Olmo 3.1 32b Instruct has downloadable open weights; the other is API-only.

## Snapshot

| | Grok 4.5 | Olmo 3.1 32b Instruct |
|---|---|---|
| Provider | xAI | Allen Institute for AI (Ai2) |
| Noometry Index | 55.0 | 38.8 |
| Rank | 22 | 168 |
| Context | 500K | — |
| Input $/M | $2 | — |
| Output $/M | $6 | — |
| Weights | Proprietary | Open |

## Coding

- Grok 4.5: 51.7 (#34)
- Olmo 3.1 32b Instruct: 38.9 (#154)

| Benchmark | Grok 4.5 | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Coding | 1473 | 1346 |
| DeepSWE | 53.8% | — |
| FrontierCode | 42.4% | — |
| LMArena WebDev | 1552 | — |
| SciCode | 54.1% | — |
| WeirdML | 46.4% | — |
| ALE-Bench | 1,309 | — |

## Agentic & Tool Use

- Grok 4.5: 44.4 (#15)
- Olmo 3.1 32b Instruct: —

| Benchmark | Grok 4.5 | Olmo 3.1 32b Instruct |
|---|---|---|
| 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)
- Olmo 3.1 32b Instruct: 25.4 (#131)

| Benchmark | Grok 4.5 | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Hard Prompts | 1462 | 1322 |
| 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 | 154.02 | — |

## Math

- Grok 4.5: 60.7 (#29)
- Olmo 3.1 32b Instruct: 33.6 (#169)

| Benchmark | Grok 4.5 | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Math | 1457 | 1305 |
| 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)
- Olmo 3.1 32b Instruct: 35.4 (#175)

| Benchmark | Grok 4.5 | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Expert | 1466 | 1307 |
| GPQA Diamond | 93.4% | — |
| SimpleQA Verified | 48.3% | — |

## Multimodal

- Grok 4.5: 37.8 (#63)
- Olmo 3.1 32b Instruct: —

| Benchmark | Grok 4.5 | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Vision | 1287 | — |
| Blueprint-Bench 2 | 27.3% | — |
| Furniture Assembly | 22.5% | — |
| LMArena Document | 1452 | — |

## Multilingual

- Grok 4.5: 54.5 (#43)
- Olmo 3.1 32b Instruct: 42.8 (#185)

| Benchmark | Grok 4.5 | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Non-English | 1439 | 1275 |
| LMArena Chinese | 1497 | 1304 |
| LMArena French | 1458 | 1328 |
| LMArena German | 1448 | 1283 |
| LMArena Korean | 1402 | 1206 |
| LMArena Russian | 1447 | 1268 |
| LMArena Spanish | 1452 | 1337 |
| LMArena Japanese | 1425 | — |

## Instruction Following

- Grok 4.5: 76.3 (#45)
- Olmo 3.1 32b Instruct: 68.8 (#182)

| Benchmark | Grok 4.5 | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Instruction Following | 1446 | 1298 |

## Long Context

- Grok 4.5: 44.8 (#54)
- Olmo 3.1 32b Instruct: 39.9 (#161)

| Benchmark | Grok 4.5 | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Longer Query | 1463 | 1312 |

## Writing & Preference

- Grok 4.5: 65.9 (#40)
- Olmo 3.1 32b Instruct: 50.4 (#179)

| Benchmark | Grok 4.5 | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Text | 1448 | 1311 |
| LMArena Creative Writing | 1442 | 1264 |
| LMArena Multi-Turn | 1457 | 1309 |
| EQ-Bench Creative Writing | 1579 | — |

## FAQ

### Is Grok 4.5 better than Olmo 3.1 32b Instruct?

Grok 4.5 is the stronger model overall, scoring 55.0 to 38.8 on the Noometry Index.

### Is Grok 4.5 or Olmo 3.1 32b Instruct better for coding?

Grok 4.5 scores higher on coding benchmarks: 51.7 versus 38.9 in the Noometry coding category.

### How many benchmarks do Grok 4.5 and Olmo 3.1 32b Instruct share?

16 benchmarks have published results for both models. Grok 4.5 has 52 scored results on Noometry and Olmo 3.1 32b Instruct has 16.