Noometry

Model comparison

Grok 4.5 vs Olmo 3.1 32b Instruct

Grok 4.5 is the stronger model overall, scoring 55.0 to 39.4 on the Noometry Index.

Last verified . 16 shared benchmarks.

Grok 4.5 xAI

55.0

Rank #25 Confirmed

Olmo 3.1 32b Instruct Allen Institute for AI (Ai2)

39.4

Rank #168 Confirmed

Summary

  • They share 16 benchmarks with published results for both. Grok 4.5 scores higher in 8 categories and Olmo 3.1 32b Instruct in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Grok 4.5 leads 56.1 to 26.4.
  • Olmo 3.1 32b Instruct has downloadable open weights; the other is API-only.

Side by side

Grok 4.5Olmo 3.1 32b Instruct
ProviderxAIAllen Institute for AI (Ai2)
Noometry Index55.039.4
Released2026-07-08—
WeightsProprietaryOpen
Context window500K—
Max output500K—
Input $ / M tokens$2—
Output $ / M tokens$6—
Results tracked5216

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Category by category

Coding Grok 4.5 leads

Grok 4.5: 52.2 (#35), Olmo 3.1 32b Instruct: 39.5 (#157)

BenchmarkGrok 4.5Olmo 3.1 32b Instruct
LMArena Coding14741347
DeepSWE53.8%—
FrontierCode42.4%—
LMArena WebDev1553—
SciCode54.1%—
WeirdML46.4%—
ALE-Bench1,309—

Agentic & Tool Use Not comparable

Grok 4.5: 44.4 (#17), Olmo 3.1 32b Instruct: —

BenchmarkGrok 4.5Olmo 3.1 32b Instruct
APEX-Agents56.2%—
τ²-bench Banking47.9%—
PostTrainBench23.4%—
GBAEval65.4%—
GDP.pdf14%—
LMArena Search1213—
Vending-Bench 23,887—

Reasoning Grok 4.5 leads

Grok 4.5: 56.1 (#25), Olmo 3.1 32b Instruct: 26.4 (#132)

BenchmarkGrok 4.5Olmo 3.1 32b Instruct
LMArena Hard Prompts14621322
ARC-AGI-252.6%—
SimpleBench70%—
Kagi LLM Benchmark83.5%—
NYT Connections (extended)79.9%—
ARC-AGI-187.2%—
CritPt15.4%—
Chess Puzzles36%—
DTBench96.5%—
LMCA45.2%—
Surface Evolver Bench74.4%—
Epoch Capabilities Index153.92—

Math Grok 4.5 leads

Grok 4.5: 60.9 (#35), Olmo 3.1 32b Instruct: 36.3 (#167)

BenchmarkGrok 4.5Olmo 3.1 32b Instruct
LMArena Math14591305
FrontierMath (Tiers 1-3)57.2%—
FrontierMath Tier 424.4%—
OTIS Mock AIME 2024-202597.8%—
ProofBench31%—

Knowledge Grok 4.5 leads

Grok 4.5: 62.3 (#24), Olmo 3.1 32b Instruct: 36.1 (#175)

BenchmarkGrok 4.5Olmo 3.1 32b Instruct
LMArena Expert14661308
GPQA Diamond93.4%—
SimpleQA Verified48.3%—

Multimodal Not comparable

Grok 4.5: 37.6 (#72), Olmo 3.1 32b Instruct: —

BenchmarkGrok 4.5Olmo 3.1 32b Instruct
LMArena Vision1288—
Blueprint-Bench 227.3%—
Furniture Assembly22.5%—
LMArena Document1452—

Multilingual Grok 4.5 leads

Grok 4.5: 54.4 (#42), Olmo 3.1 32b Instruct: 42.6 (#191)

BenchmarkGrok 4.5Olmo 3.1 32b Instruct
LMArena Non-English14401275
LMArena Chinese14961304
LMArena French14561328
LMArena German14461282
LMArena Korean14041206
LMArena Russian14481268
LMArena Spanish14501336
LMArena Japanese1428—

Instruction Following Grok 4.5 leads

Grok 4.5: 76.0 (#48), Olmo 3.1 32b Instruct: 68.6 (#187)

BenchmarkGrok 4.5Olmo 3.1 32b Instruct
LMArena Instruction Following14461299

Long Context Grok 4.5 leads

Grok 4.5: 44.8 (#56), Olmo 3.1 32b Instruct: 39.9 (#166)

BenchmarkGrok 4.5Olmo 3.1 32b Instruct
LMArena Longer Query14631312

Writing & Preference Grok 4.5 leads

Grok 4.5: 65.8 (#42), Olmo 3.1 32b Instruct: 50.2 (#185)

BenchmarkGrok 4.5Olmo 3.1 32b Instruct
LMArena Text14481311
LMArena Creative Writing14421264
LMArena Multi-Turn14561309
EQ-Bench Creative Writing1579—

Frequently asked questions

Is Grok 4.5 better than Olmo 3.1 32b Instruct?

Grok 4.5 is the stronger model overall, scoring 55.0 to 39.4 on the Noometry Index.

Is Grok 4.5 or Olmo 3.1 32b Instruct better for coding?

Grok 4.5 scores higher on coding benchmarks: 52.2 versus 39.5 in the Noometry coding category.

How many benchmarks do Grok 4.5 and Olmo 3.1 32b Instruct share?

16 benchmarks have published results for both models. Grok 4.5 has 52 scored results on Noometry and Olmo 3.1 32b Instruct has 16.

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