Noometry

Model comparison

Grok-3 mini vs Llama 3.1-8B

Grok-3 mini is the stronger model overall, scoring 41.0 to 22.8 on the Noometry Index.

Last verified . 27 shared benchmarks.

Grok-3 mini xAI

41.0

Rank #130 Confirmed

Llama 3.1-8B Meta

22.8

Rank #347 Confirmed

Summary

  • They share 27 benchmarks with published results for both. Grok-3 mini scores higher in 7 categories and Llama 3.1-8B in 1 category; 7 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where Grok-3 mini leads 46.3 to 8.0.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 77.8% for Grok-3 mini and 1.7% for Llama 3.1-8B.
  • Llama 3.1-8B has downloadable open weights; the other is API-only.

Side by side

Grok-3 miniLlama 3.1-8B
ProviderxAIMeta
Noometry Index41.022.8
Released2025-04-092024-07-23
WeightsProprietaryOpen
Context window—128K
Max output—4K
Input $ / M tokens—$0.05
Output $ / M tokens—$0.08
Results tracked3543

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Category by category

Coding Grok-3 mini leads

Grok-3 mini: 40.4 (#126), Llama 3.1-8B: 19.9 (#335)

BenchmarkGrok-3 miniLlama 3.1-8B
WeirdML42.6%1.7%
LMArena Coding13801195
Aider Polyglot49.3%—
SciCode—13.2%
BigCodeBench Instruct—32.8%
BigCodeBench Complete—40.5%
HumanEval+—62.8%
MBPP+—55.6%

Agentic & Tool Use Not comparable

Grok-3 mini: —, Llama 3.1-8B: 22.3 (#123)

BenchmarkGrok-3 miniLlama 3.1-8B
Berkeley Function Calling Leaderboard—25.8%
BALROG—15.1%

Reasoning Too close to call

Grok-3 mini: 13.8 (#323), Llama 3.1-8B: 14.5 (#316)

BenchmarkGrok-3 miniLlama 3.1-8B
LMArena Hard Prompts13741175
Epoch Capabilities Index140.35116.48
ARC-AGI-20.4%—
Kagi LLM Benchmark61.3%—
ARC-AGI-116.5%—
CritPt—0%
Chess Puzzles—0%
DTBench—50.9%
LMCA—5.4%
PIQA—81.2%

Math Grok-3 mini leads

Grok-3 mini: 40.3 (#78), Llama 3.1-8B: 9.5 (#311)

BenchmarkGrok-3 miniLlama 3.1-8B
OTIS Mock AIME 2024-202577.8%1.7%
Omni-MATH31.8%13.7%
LMArena Math13861179
MATH Level 590.9%22.9%
FrontierMath (Feb 2025 set)5.9%—
GSM8K—82.4%

Knowledge Grok-3 mini leads

Grok-3 mini: 46.3 (#75), Llama 3.1-8B: 8.0 (#302)

BenchmarkGrok-3 miniLlama 3.1-8B
GPQA Diamond76.3%27%
MMLU-Pro79.9%40.6%
GPQA (HELM)67.5%24.7%
LMArena Expert13951144
Confabulations10.8%—
BoolQ—82.8%
MMLU—56.1%

Multilingual Grok-3 mini leads

Grok-3 mini: 48.3 (#141), Llama 3.1-8B: 34.2 (#244)

BenchmarkGrok-3 miniLlama 3.1-8B
LMArena Non-English13521148
LMArena Chinese13871151
LMArena French13571176
LMArena German13501144
LMArena Japanese13431061
LMArena Korean13361053
LMArena Russian13521158
LMArena Spanish13791169

Instruction Following Grok-3 mini leads

Grok-3 mini: 78.7 (#8), Llama 3.1-8B: 59.1 (#253)

BenchmarkGrok-3 miniLlama 3.1-8B
IFEval95.1%74.3%
LMArena Instruction Following13561159

Long Context Grok-3 mini leads

Grok-3 mini: 41.0 (#142), Llama 3.1-8B: 35.8 (#233)

BenchmarkGrok-3 miniLlama 3.1-8B
LMArena Longer Query13721182
Fiction.LiveBench66.7%—

Writing & Preference Grok-3 mini leads

Grok-3 mini: 52.7 (#163), Llama 3.1-8B: 29.9 (#285)

BenchmarkGrok-3 miniLlama 3.1-8B
LMArena Text13701187
LMArena Creative Writing13421154
WildBench65.1%68.7%
LMArena Multi-Turn13551172
Short-Story Creative Writing73.5%—
EQ-Bench Creative Writing—713

Frequently asked questions

Is Grok-3 mini better than Llama 3.1-8B?

Grok-3 mini is the stronger model overall, scoring 41.0 to 22.8 on the Noometry Index.

Is Grok-3 mini or Llama 3.1-8B better for coding?

Grok-3 mini scores higher on coding benchmarks: 40.4 versus 19.9 in the Noometry coding category.

How many benchmarks do Grok-3 mini and Llama 3.1-8B share?

27 benchmarks have published results for both models. Grok-3 mini has 35 scored results on Noometry and Llama 3.1-8B has 43.

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