Noometry

Model comparison

Grok 4.1 Fast vs Granite 4.0 H Small

Grok 4.1 Fast is the stronger model overall, scoring 41.4 to 36.5 on the Noometry Index.

Last verified . 14 shared benchmarks.

Grok 4.1 Fast xAI

41.4

Rank #136 Confirmed

Granite 4.0 H Small IBM

36.5

Rank #214 Confirmed

Summary

  • They share 14 benchmarks with published results for both. Grok 4.1 Fast scores higher in 7 categories and Granite 4.0 H Small in 1 category; 7 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Grok 4.1 Fast leads 43.4 to 24.4.
  • The biggest single-benchmark swing is Vectara Hallucination Rate: 17.8% for Grok 4.1 Fast and 5.2% for Granite 4.0 H Small.
  • Granite 4.0 H Small has downloadable open weights; the other is API-only.

Side by side

Grok 4.1 FastGranite 4.0 H Small
ProviderxAIIBM
Noometry Index41.436.5
Released2025-06-27—
WeightsProprietaryOpen
Context window128K—
Max output30K—
Input $ / M tokens$0.20—
Output $ / M tokens$0.50—
Results tracked3219

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Category by category

Coding Granite 4.0 H Small leads

Grok 4.1 Fast: 34.1 (#245), Granite 4.0 H Small: 36.4 (#209)

BenchmarkGrok 4.1 FastGranite 4.0 H Small
LMArena Coding14111249
LMArena WebDev1242—
ALE-Bench394.93—

Agentic & Tool Use Not comparable

Grok 4.1 Fast: 36.3 (#39), Granite 4.0 H Small: —

BenchmarkGrok 4.1 FastGranite 4.0 H Small
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), Granite 4.0 H Small: 24.4 (#163)

BenchmarkGrok 4.1 FastGranite 4.0 H Small
LMArena Hard Prompts14071240
SimpleBench56%—
NYT Connections (extended)87.4%—
DTBench87.7%—
ForecastBench61—

Math Too close to call

Grok 4.1 Fast: 31.9 (#221), Granite 4.0 H Small: 31.4 (#223)

BenchmarkGrok 4.1 FastGranite 4.0 H Small
LMArena Math14081247
MathArena Final-Answer Competitions60.9%—
ProofBench4%—
Omni-MATH—29.6%

Knowledge Grok 4.1 Fast leads

Grok 4.1 Fast: 33.1 (#207), Granite 4.0 H Small: 32.0 (#215)

BenchmarkGrok 4.1 FastGranite 4.0 H Small
Vectara Hallucination Rate17.8%5.2%
LMArena Expert13991251
MMLU-Pro—56.9%
GPQA (HELM)—38.3%

Multimodal Not comparable

Grok 4.1 Fast: 37.0 (#76), Granite 4.0 H Small: —

BenchmarkGrok 4.1 FastGranite 4.0 H Small
LMArena Vision1201—

Multilingual Grok 4.1 Fast leads

Grok 4.1 Fast: 51.0 (#114), Granite 4.0 H Small: 38.6 (#228)

BenchmarkGrok 4.1 FastGranite 4.0 H Small
LMArena Non-English13911216
LMArena Chinese14411249
LMArena Russian13871201
LMArena Spanish14131258
LMArena French1415—
LMArena German1404—
LMArena Japanese1349—
LMArena Korean1361—

Instruction Following Grok 4.1 Fast leads

Grok 4.1 Fast: 72.7 (#133), Granite 4.0 H Small: 68.7 (#183)

BenchmarkGrok 4.1 FastGranite 4.0 H Small
LMArena Instruction Following13761222
IFEval—89%

Long Context Grok 4.1 Fast leads

Grok 4.1 Fast: 42.4 (#126), Granite 4.0 H Small: 37.7 (#213)

BenchmarkGrok 4.1 FastGranite 4.0 H Small
LMArena Longer Query13901242

Writing & Preference Grok 4.1 Fast leads

Grok 4.1 Fast: 57.2 (#131), Granite 4.0 H Small: 43.8 (#227)

BenchmarkGrok 4.1 FastGranite 4.0 H Small
LMArena Text14081241
LMArena Creative Writing13941211
LMArena Multi-Turn13891242
EQ-Bench Creative Writing1327—
WildBench—73.9%

Frequently asked questions

Is Grok 4.1 Fast better than Granite 4.0 H Small?

Grok 4.1 Fast is the stronger model overall, scoring 41.4 to 36.5 on the Noometry Index.

Is Grok 4.1 Fast or Granite 4.0 H Small better for coding?

Granite 4.0 H Small scores higher on coding benchmarks: 36.4 versus 34.1 in the Noometry coding category.

How many benchmarks do Grok 4.1 Fast and Granite 4.0 H Small share?

14 benchmarks have published results for both models. Grok 4.1 Fast has 32 scored results on Noometry and Granite 4.0 H Small has 19.

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