# GPT-5.2 vs Grok 3

> GPT-5.2 is the stronger model overall, scoring 54.1 to 39.6 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-2-vs-grok-3
- Last updated: 2026-10-10
- Shared benchmarks: 29

## Summary

- They share 29 benchmarks with published results for both. GPT-5.2 scores higher in 8 categories and Grok 3 in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5.2 leads 50.1 to 13.8.
- The biggest single-benchmark swing is ARC-AGI-1: 86.2% for GPT-5.2 and 5.5% for Grok 3.

## Snapshot

| | GPT-5.2 | Grok 3 |
|---|---|---|
| Provider | OpenAI | xAI |
| Noometry Index | 54.1 | 39.6 |
| Rank | 31 | 150 |
| Context | 400K | — |
| Input $/M | $1.75 | — |
| Output $/M | $14 | — |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-5.2: 52.2 (#32)
- Grok 3: 41.5 (#113)

| Benchmark | GPT-5.2 | Grok 3 |
|---|---|---|
| WeirdML | 72.2% | 37.2% |
| LMArena Coding | 1447 | 1432 |
| SWE-bench Verified | 73.8% | — |
| SWE-bench Verified (bash only) | 72.8% | — |
| Aider Polyglot | — | 53.3% |
| LMArena WebDev | 1415 | — |
| SWE-bench Multilingual | 66.7% | — |
| GSO | 27.4% | — |
| ALE-Bench | 1,294 | — |
| AlgoTune | 2.05 | — |

## Agentic & Tool Use

- GPT-5.2: 40.0 (#24)
- Grok 3: 30.2 (#69)

| Benchmark | GPT-5.2 | Grok 3 |
|---|---|---|
| Terminal-Bench | 64.9% | — |
| Berkeley Function Calling Leaderboard | 55.9% | — |
| GDPval | 49.7% | — |
| Remote Labor Index | 2.5% | — |
| τ²-bench Airline | 83% | — |
| τ²-bench Banking | 32.2% | — |
| τ²-bench Retail | 81.6% | — |
| τ²-bench Telecom | 89.7% | — |
| DeepResearch Bench | 41.1% | — |
| BALROG | — | 29.5% |
| LMArena Search | 1207 | — |
| METR Time Horizons | 75.3% | — |
| Vending-Bench 2 | 3,591 | — |

## Reasoning

- GPT-5.2: 50.1 (#33)
- Grok 3: 13.8 (#322)

| Benchmark | GPT-5.2 | Grok 3 |
|---|---|---|
| ARC-AGI-2 | 52.9% | 0% |
| SimpleBench | 45.8% | 36.1% |
| Kagi LLM Benchmark | 73.3% | 61.3% |
| ARC-AGI-1 | 86.2% | 5.5% |
| LMArena Hard Prompts | 1445 | 1433 |
| Epoch Capabilities Index | 153.45 | 138.34 |
| NYT Connections (extended) | 83.6% | — |
| Chess Puzzles | 49% | — |
| EnigmaEval | 10.4% | — |
| EBR-Bench | 23% | — |
| Mystery Game Puzzles | 23% | — |
| DTBench | 90.9% | — |
| LMCA | 43.9% | — |
| ForecastBench | 60.1 | — |

## Math

- GPT-5.2: 59.8 (#32)
- Grok 3: 36.2 (#122)

| Benchmark | GPT-5.2 | Grok 3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 96.1% | 55.6% |
| LMArena Math | 1439 | 1390 |
| FrontierMath (Feb 2025 set) | 40.7% | 3.8% |
| FrontierMath Tier 4 (v1) | 18.8% | 0% |
| FrontierMath (Tiers 1-3) | 67.4% | — |
| FrontierMath Tier 4 | 31.7% | — |
| MathArena Final-Answer Competitions | 72% | — |
| ProofBench | 15% | — |
| Omni-MATH | — | 46.4% |
| MATH Level 5 | — | 88.7% |

## Knowledge

- GPT-5.2: 59.2 (#29)
- Grok 3: 46.0 (#76)

| Benchmark | GPT-5.2 | Grok 3 |
|---|---|---|
| GPQA Diamond | 91.4% | 75.8% |
| Vectara Hallucination Rate | 8.4% | 5.8% |
| LMArena Expert | 1445 | 1420 |
| Humanity's Last Exam | 27.8% | — |
| SimpleQA Verified | 37.1% | — |
| MMLU-Pro | — | 78.8% |
| Confabulations | — | 14.2% |
| GPQA (HELM) | — | 65% |

## Multimodal

- GPT-5.2: 50.9 (#7)
- Grok 3: —

| Benchmark | GPT-5.2 | Grok 3 |
|---|---|---|
| LMArena Vision | 1268 | — |
| VPCT | 84% | — |
| Furniture Assembly | 38.3% | — |
| LMArena Document | 1405 | — |

## Multilingual

- GPT-5.2: 53.6 (#63)
- Grok 3: 52.5 (#81)

| Benchmark | GPT-5.2 | Grok 3 |
|---|---|---|
| LMArena Non-English | 1425 | 1411 |
| LMArena Chinese | 1460 | 1448 |
| LMArena French | 1456 | 1460 |
| LMArena German | 1448 | 1431 |
| LMArena Japanese | 1421 | 1389 |
| LMArena Korean | 1390 | 1374 |
| LMArena Russian | 1440 | 1416 |
| LMArena Spanish | 1433 | 1417 |

## Instruction Following

- GPT-5.2: 74.9 (#83)
- Grok 3: 75.2 (#69)

| Benchmark | GPT-5.2 | Grok 3 |
|---|---|---|
| LMArena Instruction Following | 1417 | 1409 |
| IFEval | — | 88.4% |

## Long Context

- GPT-5.2: 44.0 (#74)
- Grok 3: 38.7 (#187)

| Benchmark | GPT-5.2 | Grok 3 |
|---|---|---|
| LMArena Longer Query | 1428 | 1439 |
| Fiction.LiveBench | — | 58.3% |
| CL-bench | 18.2% | — |

## Writing & Preference

- GPT-5.2: 67.0 (#30)
- Grok 3: 56.0 (#136)

| Benchmark | GPT-5.2 | Grok 3 |
|---|---|---|
| LMArena Text | 1439 | 1426 |
| LMArena Creative Writing | 1402 | 1414 |
| EQ-Bench Creative Writing | 1703 | 1186 |
| LMArena Multi-Turn | 1458 | 1424 |
| Short-Story Creative Writing | — | 76.4% |
| WildBench | — | 84.9% |

## FAQ

### Is GPT-5.2 better than Grok 3?

GPT-5.2 is the stronger model overall, scoring 54.1 to 39.6 on the Noometry Index.

### Is GPT-5.2 or Grok 3 better for coding?

GPT-5.2 scores higher on coding benchmarks: 52.2 versus 41.5 in the Noometry coding category.

### How many benchmarks do GPT-5.2 and Grok 3 share?

29 benchmarks have published results for both models. GPT-5.2 has 67 scored results on Noometry and Grok 3 has 40.