Noometry

Model comparison

Grok 4.1 Fast vs Olmo 7b Instruct

Grok 4.1 Fast is the stronger model overall, scoring 41.4 to 30.3 on the Noometry Index.

Last verified . 10 shared benchmarks.

Grok 4.1 Fast xAI

41.4

Rank #136 Confirmed

Olmo 7b Instruct Allen Institute for AI (Ai2)

30.3

Rank #295 Confirmed

Summary

  • They share 10 benchmarks with published results for both. Grok 4.1 Fast scores higher in 6 categories and Olmo 7b Instruct in 0 categories; 6 gaps are clear of the uncertainty.
  • The widest gap is in writing & preference, where Grok 4.1 Fast leads 57.2 to 25.8.
  • Olmo 7b Instruct has downloadable open weights; the other is API-only.

Side by side

Grok 4.1 FastOlmo 7b Instruct
ProviderxAIAllen Institute for AI (Ai2)
Noometry Index41.430.3
Released2025-06-27—
WeightsProprietaryOpen
Context window128K—
Max output30K—
Input $ / M tokens$0.20—
Output $ / M tokens$0.50—
Results tracked3210

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Category by category

Coding Grok 4.1 Fast leads

Grok 4.1 Fast: 34.1 (#245), Olmo 7b Instruct: 29.6 (#303)

BenchmarkGrok 4.1 FastOlmo 7b Instruct
LMArena Coding14111016
LMArena WebDev1242—
ALE-Bench394.93—

Agentic & Tool Use Not comparable

Grok 4.1 Fast: 36.3 (#39), Olmo 7b Instruct: —

BenchmarkGrok 4.1 FastOlmo 7b Instruct
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), Olmo 7b Instruct: 18.8 (#274)

BenchmarkGrok 4.1 FastOlmo 7b Instruct
LMArena Hard Prompts1407993
SimpleBench56%—
NYT Connections (extended)87.4%—
DTBench87.7%—
ForecastBench61—

Math Grok 4.1 Fast leads

Grok 4.1 Fast: 31.9 (#221), Olmo 7b Instruct: 30.2 (#237)

BenchmarkGrok 4.1 FastOlmo 7b Instruct
LMArena Math14081018
MathArena Final-Answer Competitions60.9%—
ProofBench4%—

Knowledge Not comparable

Grok 4.1 Fast: 33.1 (#207), Olmo 7b Instruct: —

BenchmarkGrok 4.1 FastOlmo 7b Instruct
Vectara Hallucination Rate17.8%—
LMArena Expert1399—

Multimodal Not comparable

Grok 4.1 Fast: 37.0 (#76), Olmo 7b Instruct: —

BenchmarkGrok 4.1 FastOlmo 7b Instruct
LMArena Vision1201—

Multilingual Grok 4.1 Fast leads

Grok 4.1 Fast: 51.0 (#114), Olmo 7b Instruct: 24.0 (#291)

BenchmarkGrok 4.1 FastOlmo 7b Instruct
LMArena Non-English1391977
LMArena Chinese14411014
LMArena Russian1387947
LMArena French1415—
LMArena German1404—
LMArena Japanese1349—
LMArena Korean1361—
LMArena Spanish1413—

Instruction Following Grok 4.1 Fast leads

Grok 4.1 Fast: 72.7 (#133), Olmo 7b Instruct: 49.0 (#301)

BenchmarkGrok 4.1 FastOlmo 7b Instruct
LMArena Instruction Following1376978

Long Context Not comparable

Grok 4.1 Fast: 42.4 (#126), Olmo 7b Instruct: —

BenchmarkGrok 4.1 FastOlmo 7b Instruct
LMArena Longer Query1390—

Writing & Preference Grok 4.1 Fast leads

Grok 4.1 Fast: 57.2 (#131), Olmo 7b Instruct: 25.8 (#303)

BenchmarkGrok 4.1 FastOlmo 7b Instruct
LMArena Text14081032
LMArena Creative Writing1394990
LMArena Multi-Turn13891007
EQ-Bench Creative Writing1327—

Frequently asked questions

Is Grok 4.1 Fast better than Olmo 7b Instruct?

Grok 4.1 Fast is the stronger model overall, scoring 41.4 to 30.3 on the Noometry Index.

Is Grok 4.1 Fast or Olmo 7b Instruct better for coding?

Grok 4.1 Fast scores higher on coding benchmarks: 34.1 versus 29.6 in the Noometry coding category.

How many benchmarks do Grok 4.1 Fast and Olmo 7b Instruct share?

10 benchmarks have published results for both models. Grok 4.1 Fast has 32 scored results on Noometry and Olmo 7b Instruct has 10.

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