Noometry

Model comparison

Grok 4.1 Fast vs Llama 2-70B

Grok 4.1 Fast is the stronger model overall, scoring 41.4 to 24.4 on the Noometry Index.

Last verified . 19 shared benchmarks.

Grok 4.1 Fast xAI

41.4

Rank #136 Confirmed

Llama 2-70B Meta

24.4

Rank #349 Confirmed

Summary

  • They share 19 benchmarks with published results for both. Grok 4.1 Fast scores higher in 8 categories and Llama 2-70B in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Grok 4.1 Fast leads 43.4 to 14.4.
  • The biggest single-benchmark swing is DTBench: 87.7% for Grok 4.1 Fast and 41.6% for Llama 2-70B.
  • Llama 2-70B has downloadable open weights; the other is API-only.

Side by side

Grok 4.1 FastLlama 2-70B
ProviderxAIMeta
Noometry Index41.424.4
Released2025-06-272023-07-18
WeightsProprietaryOpen
Context window128K—
Max output30K—
Input $ / M tokens$0.20—
Output $ / M tokens$0.50—
Results tracked3235

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Category by category

Coding Grok 4.1 Fast leads

Grok 4.1 Fast: 34.1 (#245), Llama 2-70B: 31.4 (#286)

BenchmarkGrok 4.1 FastLlama 2-70B
LMArena Coding14111079
LMArena WebDev1242—
ALE-Bench394.93—

Agentic & Tool Use Not comparable

Grok 4.1 Fast: 36.3 (#39), Llama 2-70B: —

BenchmarkGrok 4.1 FastLlama 2-70B
Berkeley Function Calling Leaderboard69.6%—
τ²-bench Banking13.1%—
LMArena Search1171—
Vending-Bench 21,107—

Reasoning Grok 4.1 Fast leads

Grok 4.1 Fast: 43.4 (#49), Llama 2-70B: 14.4 (#325)

BenchmarkGrok 4.1 FastLlama 2-70B
LMArena Hard Prompts14071073
DTBench87.7%41.6%
ForecastBench6151.4
SimpleBench56%—
NYT Connections (extended)87.4%—
BIG-Bench Hard—64.9%
CommonsenseQA 2.0—50%
Epoch Capabilities Index—113.79
HellaSwag—85.3%
LAMBADA—78.9%
PIQA—82.8%
WinoGrande—80.2%

Math Grok 4.1 Fast leads

Grok 4.1 Fast: 31.9 (#221), Llama 2-70B: 8.1 (#326)

BenchmarkGrok 4.1 FastLlama 2-70B
LMArena Math14081091
MathArena Final-Answer Competitions60.9%—
OTIS Mock AIME 2024-2025—0%
ProofBench4%—
MATH Level 5—3.3%
GSM8K—69.6%

Knowledge Grok 4.1 Fast leads

Grok 4.1 Fast: 33.1 (#207), Llama 2-70B: 7.4 (#310)

BenchmarkGrok 4.1 FastLlama 2-70B
LMArena Expert13991039
GPQA Diamond—26.3%
Vectara Hallucination Rate17.8%—
ARC (AI2) Challenge—78.3%
BoolQ—88.6%
MMLU—69.9%
OpenBookQA—60.2%
TriviaQA—87.6%

Multimodal Not comparable

Grok 4.1 Fast: 37.0 (#76), Llama 2-70B: —

BenchmarkGrok 4.1 FastLlama 2-70B
LMArena Vision1201—

Multilingual Grok 4.1 Fast leads

Grok 4.1 Fast: 51.0 (#114), Llama 2-70B: 27.7 (#274)

BenchmarkGrok 4.1 FastLlama 2-70B
LMArena Non-English13911045
LMArena Chinese1441995
LMArena French14151090
LMArena German14041041
LMArena Japanese1349927
LMArena Korean1361964
LMArena Russian13871083
LMArena Spanish14131143

Instruction Following Grok 4.1 Fast leads

Grok 4.1 Fast: 72.7 (#133), Llama 2-70B: 54.9 (#278)

BenchmarkGrok 4.1 FastLlama 2-70B
LMArena Instruction Following13761071

Long Context Grok 4.1 Fast leads

Grok 4.1 Fast: 42.4 (#126), Llama 2-70B: 32.3 (#270)

BenchmarkGrok 4.1 FastLlama 2-70B
LMArena Longer Query13901062

Writing & Preference Grok 4.1 Fast leads

Grok 4.1 Fast: 57.2 (#131), Llama 2-70B: 32.3 (#279)

BenchmarkGrok 4.1 FastLlama 2-70B
LMArena Text14081115
LMArena Creative Writing13941075
LMArena Multi-Turn13891088
EQ-Bench Creative Writing1327—

Frequently asked questions

Is Grok 4.1 Fast better than Llama 2-70B?

Grok 4.1 Fast is the stronger model overall, scoring 41.4 to 24.4 on the Noometry Index.

Is Grok 4.1 Fast or Llama 2-70B better for coding?

Grok 4.1 Fast scores higher on coding benchmarks: 34.1 versus 31.4 in the Noometry coding category.

How many benchmarks do Grok 4.1 Fast and Llama 2-70B share?

19 benchmarks have published results for both models. Grok 4.1 Fast has 32 scored results on Noometry and Llama 2-70B has 35.

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