Noometry

Model comparison

Claude Opus 4 vs Olmo 2 0325 32b Instruct

Claude Opus 4 is the stronger model overall, scoring 43.1 to 32.7 on the Noometry Index.

Last verified . 16 shared benchmarks.

Claude Opus 4 Anthropic

43.1

Rank #100 Confirmed

Olmo 2 0325 32b Instruct Allen Institute for AI (Ai2)

32.7

Rank #254 Confirmed

Summary

  • They share 16 benchmarks with published results for both. Claude Opus 4 scores higher in 8 categories and Olmo 2 0325 32b Instruct in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where Claude Opus 4 leads 44.0 to 19.5.
  • The biggest single-benchmark swing is MMLU-Pro: 87.5% for Claude Opus 4 and 41.4% for Olmo 2 0325 32b Instruct.
  • Olmo 2 0325 32b Instruct has downloadable open weights; the other is API-only.

Side by side

Claude Opus 4Olmo 2 0325 32b Instruct
ProviderAnthropicAllen Institute for AI (Ai2)
Noometry Index43.132.7
Released2025-05-22—
WeightsProprietaryOpen
Context window200K—
Max output32K—
Input $ / M tokens$15—
Output $ / M tokens$75—
Results tracked5616

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Category by category

Coding Claude Opus 4 leads

Claude Opus 4: 47.2 (#62), Olmo 2 0325 32b Instruct: 35.2 (#227)

BenchmarkClaude Opus 4Olmo 2 0325 32b Instruct
LMArena Coding14421210
SWE-bench Verified70.7%—
SWE-bench Verified (bash only)67.6%—
Aider Polyglot72%—
GSO6.9%—
WeirdML43.7%—
AlgoTune1.33—

Agentic & Tool Use Not comparable

Claude Opus 4: 34.8 (#42), Olmo 2 0325 32b Instruct: —

BenchmarkClaude Opus 4Olmo 2 0325 32b Instruct
Cybench38%—
DeepResearch Bench46.8%—
LMArena Search1127—
METR Time Horizons63.9%—

Reasoning Claude Opus 4 leads

Claude Opus 4: 27.3 (#121), Olmo 2 0325 32b Instruct: 23.6 (#175)

BenchmarkClaude Opus 4Olmo 2 0325 32b Instruct
LMArena Hard Prompts13991208
ARC-AGI-28.6%—
SimpleBench58.8%—
Kagi LLM Benchmark74.3%—
ARC-AGI-135.7%—
CritPt0.3%—
EnigmaEval5.6%—
DTBench81.6%—
LMCA37.4%—
Epoch Capabilities Index142.67—
ForecastBench61.1—

Math Claude Opus 4 leads

Claude Opus 4: 42.0 (#86), Olmo 2 0325 32b Instruct: 26.8 (#255)

BenchmarkClaude Opus 4Olmo 2 0325 32b Instruct
Omni-MATH61.6%16.1%
LMArena Math13901208
OTIS Mock AIME 2024-202564.4%—
MATH Level 585%—
FrontierMath (Feb 2025 set)4.5%—
FrontierMath Tier 4 (v1)4.2%—

Knowledge Claude Opus 4 leads

Claude Opus 4: 44.0 (#88), Olmo 2 0325 32b Instruct: 19.5 (#279)

BenchmarkClaude Opus 4Olmo 2 0325 32b Instruct
MMLU-Pro87.5%41.4%
GPQA (HELM)70.8%28.7%
GPQA Diamond76.3%—
Humanity's Last Exam10.7%—
Confabulations15.9%—
Vectara Hallucination Rate12%—
LMArena Expert1386—

Multimodal Not comparable

Claude Opus 4: 31.5 (#106), Olmo 2 0325 32b Instruct: —

BenchmarkClaude Opus 4Olmo 2 0325 32b Instruct
LMArena Vision1192—
GeoBench49%—
VPCT38%—

Multilingual Claude Opus 4 leads

Claude Opus 4: 48.8 (#138), Olmo 2 0325 32b Instruct: 34.8 (#248)

BenchmarkClaude Opus 4Olmo 2 0325 32b Instruct
LMArena Non-English13621160
LMArena Chinese13861192
LMArena Russian13921187
LMArena French1372—
LMArena German1391—
LMArena Japanese1331—
LMArena Korean1321—
LMArena Spanish1389—

Instruction Following Claude Opus 4 leads

Claude Opus 4: 77.1 (#28), Olmo 2 0325 32b Instruct: 61.5 (#244)

BenchmarkClaude Opus 4Olmo 2 0325 32b Instruct
IFEval91.8%78%
LMArena Instruction Following14061186

Long Context Claude Opus 4 leads

Claude Opus 4: 39.6 (#172), Olmo 2 0325 32b Instruct: 36.2 (#234)

BenchmarkClaude Opus 4Olmo 2 0325 32b Instruct
LMArena Longer Query14221194
Fiction.LiveBench61.1%—

Writing & Preference Claude Opus 4 leads

Claude Opus 4: 61.2 (#89), Olmo 2 0325 32b Instruct: 42.1 (#236)

BenchmarkClaude Opus 4Olmo 2 0325 32b Instruct
LMArena Text13771218
LMArena Creative Writing13871199
WildBench85.2%73.4%
LMArena Multi-Turn13961221
Short-Story Creative Writing83.6%—
EQ-Bench Creative Writing1580—

Frequently asked questions

Is Claude Opus 4 better than Olmo 2 0325 32b Instruct?

Claude Opus 4 is the stronger model overall, scoring 43.1 to 32.7 on the Noometry Index.

Is Claude Opus 4 or Olmo 2 0325 32b Instruct better for coding?

Claude Opus 4 scores higher on coding benchmarks: 47.2 versus 35.2 in the Noometry coding category.

How many benchmarks do Claude Opus 4 and Olmo 2 0325 32b Instruct share?

16 benchmarks have published results for both models. Claude Opus 4 has 56 scored results on Noometry and Olmo 2 0325 32b Instruct has 16.

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