# Grok-3 mini vs Llama 3-8B

> Grok-3 mini is the stronger model overall, scoring 41.0 to 25.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-3-mini-vs-llama-3-8b
- Last updated: 2026-10-10
- Shared benchmarks: 21

## Summary

- They share 21 benchmarks with published results for both. Grok-3 mini scores higher in 7 categories and Llama 3-8B in 1 category; 7 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Grok-3 mini leads 46.3 to 7.8.
- The biggest single-benchmark swing is MATH Level 5: 90.9% for Grok-3 mini and 6.1% for Llama 3-8B.
- Llama 3-8B has downloadable open weights; the other is API-only.

## Snapshot

| | Grok-3 mini | Llama 3-8B |
|---|---|---|
| Provider | xAI | Meta |
| Noometry Index | 41.0 | 25.3 |
| Rank | 130 | 338 |
| Context | — | 8K |
| Input $/M | — | $0.14 |
| Output $/M | — | $0.14 |
| Weights | Proprietary | Open |

## Coding

- Grok-3 mini: 40.4 (#126)
- Llama 3-8B: 30.5 (#285)

| Benchmark | Grok-3 mini | Llama 3-8B |
|---|---|---|
| LMArena Coding | 1380 | 1152 |
| Aider Polyglot | 49.3% | — |
| WeirdML | 42.6% | — |
| BigCodeBench Instruct | — | 31.9% |
| BigCodeBench Complete | — | 36.9% |
| HumanEval+ | — | 56.7% |
| MBPP+ | — | 54.8% |

## Reasoning

- Grok-3 mini: 13.8 (#323)
- Llama 3-8B: 13.8 (#321)

| Benchmark | Grok-3 mini | Llama 3-8B |
|---|---|---|
| LMArena Hard Prompts | 1374 | 1133 |
| Epoch Capabilities Index | 140.35 | 116.33 |
| ARC-AGI-2 | 0.4% | — |
| Kagi LLM Benchmark | 61.3% | — |
| ARC-AGI-1 | 16.5% | — |
| Chess Puzzles | — | 0% |
| DTBench | — | 43.9% |
| Adversarial NLI | — | 57.3% |
| ForecastBench | — | 58.6 |
| WinoGrande | — | 75.7% |

## Math

- Grok-3 mini: 40.3 (#78)
- Llama 3-8B: 8.3 (#317)

| Benchmark | Grok-3 mini | Llama 3-8B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 77.8% | 1.9% |
| LMArena Math | 1386 | 1151 |
| MATH Level 5 | 90.9% | 6.1% |
| Omni-MATH | 31.8% | — |
| FrontierMath (Feb 2025 set) | 5.9% | — |

## Knowledge

- Grok-3 mini: 46.3 (#75)
- Llama 3-8B: 7.8 (#303)

| Benchmark | Grok-3 mini | Llama 3-8B |
|---|---|---|
| GPQA Diamond | 76.3% | 26.1% |
| LMArena Expert | 1395 | 1113 |
| MMLU-Pro | 79.9% | — |
| Confabulations | 10.8% | — |
| GPQA (HELM) | 67.5% | — |
| ARC (AI2) Challenge | — | 82.8% |
| MMLU | — | 68.8% |
| OpenBookQA | — | 82.6% |
| TriviaQA | — | 67.7% |

## Multilingual

- Grok-3 mini: 48.3 (#141)
- Llama 3-8B: 31.0 (#256)

| Benchmark | Grok-3 mini | Llama 3-8B |
|---|---|---|
| LMArena Non-English | 1352 | 1098 |
| LMArena Chinese | 1387 | 1076 |
| LMArena French | 1357 | 1158 |
| LMArena German | 1350 | 1104 |
| LMArena Japanese | 1343 | 967 |
| LMArena Korean | 1336 | 1003 |
| LMArena Russian | 1352 | 1109 |
| LMArena Spanish | 1379 | 1172 |

## Instruction Following

- Grok-3 mini: 78.7 (#8)
- Llama 3-8B: 58.7 (#255)

| Benchmark | Grok-3 mini | Llama 3-8B |
|---|---|---|
| LMArena Instruction Following | 1356 | 1127 |
| IFEval | 95.1% | — |

## Long Context

- Grok-3 mini: 41.0 (#142)
- Llama 3-8B: 34.2 (#246)

| Benchmark | Grok-3 mini | Llama 3-8B |
|---|---|---|
| LMArena Longer Query | 1372 | 1128 |
| Fiction.LiveBench | 66.7% | — |

## Writing & Preference

- Grok-3 mini: 52.7 (#163)
- Llama 3-8B: 37.7 (#251)

| Benchmark | Grok-3 mini | Llama 3-8B |
|---|---|---|
| LMArena Text | 1370 | 1166 |
| LMArena Creative Writing | 1342 | 1150 |
| LMArena Multi-Turn | 1355 | 1152 |
| Short-Story Creative Writing | 73.5% | — |
| WildBench | 65.1% | — |

## FAQ

### Is Grok-3 mini better than Llama 3-8B?

Grok-3 mini is the stronger model overall, scoring 41.0 to 25.3 on the Noometry Index.

### Is Grok-3 mini or Llama 3-8B better for coding?

Grok-3 mini scores higher on coding benchmarks: 40.4 versus 30.5 in the Noometry coding category.

### How many benchmarks do Grok-3 mini and Llama 3-8B share?

21 benchmarks have published results for both models. Grok-3 mini has 35 scored results on Noometry and Llama 3-8B has 34.