# Grok 4.3 vs o1

> Grok 4.3 is the stronger model overall, scoring 43.8 to 40.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-4-3-vs-o1
- Last updated: 2026-10-11
- Shared benchmarks: 27

## Summary

- They share 27 benchmarks with published results for both. Grok 4.3 scores higher in 6 categories and o1 in 4 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Grok 4.3 leads 52.5 to 41.5.
- The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 42.8% for Grok 4.3 and 14.7% for o1.
- Grok 4.3 is cheaper at $1.25 / $2.50 per million input/output tokens, against $15 / $60 for o1.
- Grok 4.3 accepts more context: 1M tokens versus 200K.

## Snapshot

| | Grok 4.3 | o1 |
|---|---|---|
| Provider | xAI | OpenAI |
| Noometry Index | 43.8 | 40.9 |
| Rank | 86 | 143 |
| Context | 1M | 200K |
| Input $/M | $1.25 | $15 |
| Output $/M | $2.50 | $60 |
| Weights | Proprietary | Proprietary |

## Coding

- Grok 4.3: 41.6 (#121)
- o1: 46.1 (#70)

| Benchmark | Grok 4.3 | o1 |
|---|---|---|
| WeirdML | 49.9% | 47.6% |
| LMArena Coding | 1415 | 1367 |
| Aider Polyglot | — | 61.7% |
| LMArena WebDev | 1357 | — |
| SciCode | 47.3% | — |
| LiveBench Coding | — | 69.7% |
| CadEval | — | 56% |
| ALE-Bench | 944.17 | — |
| HumanEval+ | — | 89% |
| MBPP+ | — | 80.2% |

## Agentic & Tool Use

- Grok 4.3: 27.7 (#99)
- o1: 24.6 (#117)

| Benchmark | Grok 4.3 | o1 |
|---|---|---|
| Cybench | — | 10% |
| GDP.pdf | 8% | — |
| LMArena Search | 1165 | — |
| METR Time Horizons | — | 51.1% |
| Vending-Bench 2 | 35.26 | — |

## Reasoning

- Grok 4.3: 35.9 (#68)
- o1: 27.9 (#111)

| Benchmark | Grok 4.3 | o1 |
|---|---|---|
| Chess Puzzles | 25% | 15% |
| LMArena Hard Prompts | 1396 | 1371 |
| DTBench | 90.7% | 74.7% |
| LMCA | 38.3% | 22.3% |
| Epoch Capabilities Index | 149.16 | 141.91 |
| SimpleBench | — | 41.7% |
| NYT Connections (extended) | 55.2% | — |
| ARC-AGI-1 | — | 30.7% |
| CritPt | 8% | — |
| EnigmaEval | — | 5.7% |
| LiveBench Reasoning | — | 91.6% |
| LiveBench Data Analysis | — | 65.5% |
| ForecastBench | 60.3 | — |
| LiveBench | — | 75.7% |

## Math

- Grok 4.3: 46.0 (#74)
- o1: 36.1 (#175)

| Benchmark | Grok 4.3 | o1 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 42.8% | 14.7% |
| OTIS Mock AIME 2024-2025 | 93.3% | 73.3% |
| LMArena Math | 1388 | 1388 |
| FrontierMath Tier 4 | 14.6% | — |
| ProofBench | 11% | — |
| LiveBench Math | — | 80.3% |
| MATH Level 5 | — | 94.7% |
| FrontierMath (Feb 2025 set) | — | 9.3% |

## Knowledge

- Grok 4.3: 52.5 (#62)
- o1: 41.5 (#110)

| Benchmark | Grok 4.3 | o1 |
|---|---|---|
| GPQA Diamond | 88.8% | 76.8% |
| SimpleQA Verified | 33.2% | 41.1% |
| LMArena Expert | 1385 | 1361 |
| Humanity's Last Exam | — | 8% |
| Confabulations | — | 11.7% |

## Multimodal

- Grok 4.3: 31.6 (#104)
- o1: 34.2 (#93)

| Benchmark | Grok 4.3 | o1 |
|---|---|---|
| LMArena Vision | 1229 | 1168 |
| GeoBench | — | 80% |
| VPCT | — | 37% |
| Blueprint-Bench 2 | 0% | — |
| SpatialViz-Bench | — | 41.4% |

## Multilingual

- Grok 4.3: 50.5 (#120)
- o1: 48.6 (#142)

| Benchmark | Grok 4.3 | o1 |
|---|---|---|
| LMArena Non-English | 1385 | 1358 |
| LMArena Chinese | 1422 | 1394 |
| LMArena French | 1412 | 1344 |
| LMArena German | 1395 | 1337 |
| LMArena Japanese | 1379 | 1346 |
| LMArena Korean | 1356 | 1396 |
| LMArena Russian | 1399 | 1356 |
| LMArena Spanish | 1398 | 1345 |

## Instruction Following

- Grok 4.3: 72.1 (#140)
- o1: 74.8 (#86)

| Benchmark | Grok 4.3 | o1 |
|---|---|---|
| LMArena Instruction Following | 1366 | 1367 |
| LiveBench Instruction Following | — | 81.5% |

## Long Context

- Grok 4.3: 42.5 (#123)
- o1: 50.3 (#9)

| Benchmark | Grok 4.3 | o1 |
|---|---|---|
| LMArena Longer Query | 1393 | 1378 |
| Fiction.LiveBench | — | 83.3% |

## Writing & Preference

- Grok 4.3: 58.5 (#118)
- o1: 55.6 (#144)

| Benchmark | Grok 4.3 | o1 |
|---|---|---|
| LMArena Text | 1397 | 1366 |
| LMArena Creative Writing | 1380 | 1348 |
| LMArena Multi-Turn | 1406 | 1369 |
| Short-Story Creative Writing | — | 70.2% |
| EQ-Bench 4 | 1075 | — |
| LiveBench Language | — | 65.4% |

## FAQ

### Is Grok 4.3 better than o1?

Grok 4.3 is the stronger model overall, scoring 43.8 to 40.9 on the Noometry Index.

### Which is cheaper, Grok 4.3 or o1?

Grok 4.3 is cheaper. It lists at $1.25 per million input tokens and $2.50 per million output tokens; o1 lists at $15 and $60.

### Is Grok 4.3 or o1 better for coding?

o1 scores higher on coding benchmarks: 46.1 versus 41.6 in the Noometry coding category.

### Which has the bigger context window?

Grok 4.3 does, with 1M tokens against 200K.

### How many benchmarks do Grok 4.3 and o1 share?

27 benchmarks have published results for both models. Grok 4.3 has 40 scored results on Noometry and o1 has 52.