Noometry

Model comparison

C4ai Aya Expanse 32b vs Grok 3

Grok 3 is the stronger model overall, scoring 39.9 to 35.9 on the Noometry Index.

Last verified . 18 shared benchmarks.

C4ai Aya Expanse 32b Cohere

35.9

Rank #221 Confirmed

Grok 3 xAI

39.9

Rank #157 Confirmed

Summary

  • They share 18 benchmarks with published results for both. C4ai Aya Expanse 32b scores higher in 1 category and Grok 3 in 7 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in multilingual, where Grok 3 leads 52.3 to 38.4.
  • The biggest single-benchmark swing is Vectara Hallucination Rate: 10.9% for C4ai Aya Expanse 32b and 5.8% for Grok 3.
  • C4ai Aya Expanse 32b has downloadable open weights; the other is API-only.

Side by side

C4ai Aya Expanse 32bGrok 3
ProviderCoherexAI
Noometry Index35.939.9
Released2024-10-242025-04-09
WeightsOpenProprietary
Context window128K—
Max output4K—
Input $ / M tokens——
Output $ / M tokens——
Results tracked1840

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Category by category

Coding Grok 3 leads

C4ai Aya Expanse 32b: 34.8 (#231), Grok 3: 41.9 (#115)

BenchmarkC4ai Aya Expanse 32bGrok 3
LMArena Coding11971432
Aider Polyglot—53.3%
WeirdML—37.2%

Agentic & Tool Use Not comparable

C4ai Aya Expanse 32b: —, Grok 3: 30.5 (#76)

BenchmarkC4ai Aya Expanse 32bGrok 3
BALROG—29.5%

Reasoning C4ai Aya Expanse 32b leads

C4ai Aya Expanse 32b: 23.3 (#180), Grok 3: 13.7 (#333)

BenchmarkC4ai Aya Expanse 32bGrok 3
LMArena Hard Prompts11931434
ARC-AGI-2—0%
SimpleBench—36.1%
Kagi LLM Benchmark—61.3%
ARC-AGI-1—5.5%
Epoch Capabilities Index—138.33

Math Grok 3 leads

C4ai Aya Expanse 32b: 34.0 (#197), Grok 3: 38.0 (#145)

BenchmarkC4ai Aya Expanse 32bGrok 3
LMArena Math12001391
OTIS Mock AIME 2024-2025—55.6%
Omni-MATH—46.4%
MATH Level 5—88.7%
FrontierMath (Feb 2025 set)—3.8%
FrontierMath Tier 4 (v1)—0%

Knowledge Grok 3 leads

C4ai Aya Expanse 32b: 33.2 (#206), Grok 3: 46.2 (#82)

BenchmarkC4ai Aya Expanse 32bGrok 3
Vectara Hallucination Rate10.9%5.8%
LMArena Expert11821421
GPQA Diamond—75.8%
MMLU-Pro—78.8%
Confabulations—14.2%
GPQA (HELM)—65%

Multilingual Grok 3 leads

C4ai Aya Expanse 32b: 38.4 (#230), Grok 3: 52.3 (#87)

BenchmarkC4ai Aya Expanse 32bGrok 3
LMArena Non-English12131410
LMArena Chinese12111448
LMArena French12481460
LMArena German11991431
LMArena Japanese11631387
LMArena Korean11581373
LMArena Russian12271416
LMArena Spanish11931417

Instruction Following Grok 3 leads

C4ai Aya Expanse 32b: 62.6 (#237), Grok 3: 75.0 (#73)

BenchmarkC4ai Aya Expanse 32bGrok 3
LMArena Instruction Following11961409
IFEval—88.4%

Long Context Grok 3 leads

C4ai Aya Expanse 32b: 37.2 (#220), Grok 3: 38.7 (#192)

BenchmarkC4ai Aya Expanse 32bGrok 3
LMArena Longer Query12281439
Fiction.LiveBench—58.3%

Writing & Preference Grok 3 leads

C4ai Aya Expanse 32b: 42.2 (#235), Grok 3: 55.8 (#141)

BenchmarkC4ai Aya Expanse 32bGrok 3
LMArena Text12241426
LMArena Creative Writing12001414
LMArena Multi-Turn11901425
Short-Story Creative Writing—76.4%
EQ-Bench Creative Writing—1186
WildBench—84.9%

Frequently asked questions

Is C4ai Aya Expanse 32b better than Grok 3?

Grok 3 is the stronger model overall, scoring 39.9 to 35.9 on the Noometry Index.

Is C4ai Aya Expanse 32b or Grok 3 better for coding?

Grok 3 scores higher on coding benchmarks: 41.9 versus 34.8 in the Noometry coding category.

How many benchmarks do C4ai Aya Expanse 32b and Grok 3 share?

18 benchmarks have published results for both models. C4ai Aya Expanse 32b has 18 scored results on Noometry and Grok 3 has 40.

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