# Grok 4 vs Grok 4.20 (Non-Reasoning)

> Grok 4 and Grok 4.20 (Non-Reasoning) score almost the same on the Noometry Index (48.1 vs 48.6), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/grok-4-vs-grok-4-20
- Last updated: 2026-10-11
- Shared benchmarks: 29

## Summary

- They share 29 benchmarks with published results for both. Grok 4 scores higher in 6 categories and Grok 4.20 (Non-Reasoning) in 4 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in long context, where Grok 4 leads 63.1 to 45.5.
- The biggest single-benchmark swing is ARC-AGI-2: 16% for Grok 4 and 65.1% for Grok 4.20 (Non-Reasoning).

## Snapshot

| | Grok 4 | Grok 4.20 (Non-Reasoning) |
|---|---|---|
| Provider | xAI | xAI |
| Noometry Index | 48.1 | 48.6 |
| Rank | 56 | 54 |
| Context | — | 1M |
| Input $/M | — | $1.25 |
| Output $/M | — | $2.50 |
| Weights | Proprietary | Proprietary |

## Coding

- Grok 4: 50.3 (#46)
- Grok 4.20 (Non-Reasoning): 42.1 (#112)

| Benchmark | Grok 4 | Grok 4.20 (Non-Reasoning) |
|---|---|---|
| WeirdML | 45.7% | 52.3% |
| LMArena Coding | 1408 | 1459 |
| Aider Polyglot | 79.6% | — |
| LMArena WebDev | — | 1375 |
| ALE-Bench | — | 1,150 |

## Agentic & Tool Use

- Grok 4: 32.3 (#68)
- Grok 4.20 (Non-Reasoning): 34.4 (#46)

| Benchmark | Grok 4 | Grok 4.20 (Non-Reasoning) |
|---|---|---|
| Terminal-Bench | 27.2% | 57.3% |
| LMArena Search | 1142 | 1189 |
| Berkeley Function Calling Leaderboard | 63% | — |
| GDPval | 21.1% | — |
| τ²-bench Banking | — | 18% |
| Cybench | 43% | — |
| DeepResearch Bench | 47.3% | — |
| BALROG | 43.6% | — |
| METR Time Horizons | 66.6% | — |
| Vending-Bench 2 | — | 4,663 |

## Reasoning

- Grok 4: 36.7 (#65)
- Grok 4.20 (Non-Reasoning): 52.3 (#32)

| Benchmark | Grok 4 | Grok 4.20 (Non-Reasoning) |
|---|---|---|
| ARC-AGI-2 | 16% | 65.1% |
| Kagi LLM Benchmark | 73.6% | 75% |
| ARC-AGI-1 | 66.7% | 89.5% |
| Chess Puzzles | 28% | 24% |
| LMArena Hard Prompts | 1409 | 1451 |
| Epoch Capabilities Index | 146.44 | 151.98 |
| ForecastBench | 60.9 | 61.4 |
| SimpleBench | 60.5% | — |
| NYT Connections (extended) | — | 85.4% |
| Thematic Generalization | — | 63.8% |
| DTBench | — | 90.1% |
| LMCA | — | 38.7% |

## Math

- Grok 4: 48.4 (#64)
- Grok 4.20 (Non-Reasoning): 48.2 (#65)

| Benchmark | Grok 4 | Grok 4.20 (Non-Reasoning) |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 84% | 92.2% |
| LMArena Math | 1422 | 1455 |
| FrontierMath (Tiers 1-3) | — | 44.9% |
| FrontierMath Tier 4 | — | 17.1% |
| ProofBench | — | 14% |
| Omni-MATH | 60.3% | — |
| FrontierMath (Feb 2025 set) | 19.7% | — |
| FrontierMath Tier 4 (v1) | 2.1% | — |

## Knowledge

- Grok 4: 53.8 (#55)
- Grok 4.20 (Non-Reasoning): 52.8 (#60)

| Benchmark | Grok 4 | Grok 4.20 (Non-Reasoning) |
|---|---|---|
| GPQA Diamond | 87% | 89.3% |
| LMArena Expert | 1415 | 1439 |
| SimpleQA Verified | — | 30.2% |
| MMLU-Pro | 85.1% | — |
| Confabulations | 12.4% | — |
| GPQA (HELM) | 72.7% | — |

## Multimodal

- Grok 4: 33.7 (#94)
- Grok 4.20 (Non-Reasoning): 33.3 (#98)

| Benchmark | Grok 4 | Grok 4.20 (Non-Reasoning) |
|---|---|---|
| LMArena Vision | 1210 | 1263 |
| GeoBench | 45% | — |
| Blueprint-Bench 2 | — | 0% |
| LMArena Document | — | 1416 |

## Multilingual

- Grok 4: 51.8 (#103)
- Grok 4.20 (Non-Reasoning): 54.5 (#40)

| Benchmark | Grok 4 | Grok 4.20 (Non-Reasoning) |
|---|---|---|
| LMArena Non-English | 1403 | 1441 |
| LMArena Chinese | 1427 | 1481 |
| LMArena French | 1418 | 1476 |
| LMArena German | 1429 | 1465 |
| LMArena Japanese | 1394 | 1449 |
| LMArena Korean | 1377 | 1417 |
| LMArena Russian | 1410 | 1458 |
| LMArena Spanish | 1420 | 1443 |

## Instruction Following

- Grok 4: 79.2 (#5)
- Grok 4.20 (Non-Reasoning): 74.8 (#83)

| Benchmark | Grok 4 | Grok 4.20 (Non-Reasoning) |
|---|---|---|
| LMArena Instruction Following | 1387 | 1420 |
| IFEval | 94.9% | — |

## Long Context

- Grok 4: 63.1 (#4)
- Grok 4.20 (Non-Reasoning): 45.5 (#34)

| Benchmark | Grok 4 | Grok 4.20 (Non-Reasoning) |
|---|---|---|
| LMArena Longer Query | 1409 | 1437 |
| Fiction.LiveBench | 94.4% | — |
| CL-bench | — | 22.2% |
| CL-bench Life | — | 11.9% |

## Writing & Preference

- Grok 4: 58.5 (#116)
- Grok 4.20 (Non-Reasoning): 65.7 (#44)

| Benchmark | Grok 4 | Grok 4.20 (Non-Reasoning) |
|---|---|---|
| LMArena Text | 1411 | 1451 |
| LMArena Creative Writing | 1397 | 1438 |
| LMArena Multi-Turn | 1416 | 1456 |
| Short-Story Creative Writing | 76.9% | — |
| EQ-Bench Creative Writing | — | 1574 |
| WildBench | 79.7% | — |

## FAQ

### Is Grok 4 better than Grok 4.20 (Non-Reasoning)?

Grok 4 and Grok 4.20 (Non-Reasoning) score almost the same on the Noometry Index (48.1 vs 48.6), so choose on price, context window or the category you care about most.

### Is Grok 4 or Grok 4.20 (Non-Reasoning) better for coding?

Grok 4 scores higher on coding benchmarks: 50.3 versus 42.1 in the Noometry coding category.

### How many benchmarks do Grok 4 and Grok 4.20 (Non-Reasoning) share?

29 benchmarks have published results for both models. Grok 4 has 48 scored results on Noometry and Grok 4.20 (Non-Reasoning) has 46.