Noometry

Model comparison

GPT-5 Nano vs Olmo 3 32b Think

Olmo 3 32b Think is the stronger model overall, scoring 38.1 to 33.4 on the Noometry Index.

Last verified . 13 shared benchmarks.

GPT-5 Nano OpenAI

33.4

Rank #234 Confirmed

Olmo 3 32b Think Allen Institute for AI (Ai2)

38.1

Rank #182 Confirmed

Summary

  • They share 13 benchmarks with published results for both. GPT-5 Nano scores higher in 3 categories and Olmo 3 32b Think in 5 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in writing & preference, where Olmo 3 32b Think leads 49.2 to 39.4.
  • Olmo 3 32b Think has downloadable open weights; the other is API-only.

Side by side

GPT-5 NanoOlmo 3 32b Think
ProviderOpenAIAllen Institute for AI (Ai2)
Noometry Index33.438.1
Released2025-08-07—
WeightsProprietaryOpen
Context window400K—
Max output128K—
Input $ / M tokens$0.05—
Output $ / M tokens$0.40—
Results tracked4814

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Category by category

Coding Olmo 3 32b Think leads

GPT-5 Nano: 33.3 (#248), Olmo 3 32b Think: 38.0 (#169)

BenchmarkGPT-5 NanoOlmo 3 32b Think
LMArena Coding13511318
SWE-bench Verified (bash only)34.8%—
WeirdML38.1%—
ALE-Bench718.67—

Agentic & Tool Use Not comparable

GPT-5 Nano: 25.6 (#99), Olmo 3 32b Think: —

BenchmarkGPT-5 NanoOlmo 3 32b Think
Terminal-Bench21.8%—
Berkeley Function Calling Leaderboard51.5%—

Reasoning Olmo 3 32b Think leads

GPT-5 Nano: 16.4 (#291), Olmo 3 32b Think: 24.9 (#138)

BenchmarkGPT-5 NanoOlmo 3 32b Think
LMArena Hard Prompts13291302
ARC-AGI-22.6%—
Kagi LLM Benchmark62.2%—
ARC-AGI-120.7%—
Chess Puzzles27%—
Mystery Game Puzzles9%—
DTBench62.7%—
LMCA7.9%—
Epoch Capabilities Index139.39—
ForecastBench59.1—

Math Olmo 3 32b Think leads

GPT-5 Nano: 29.1 (#221), Olmo 3 32b Think: 33.8 (#165)

BenchmarkGPT-5 NanoOlmo 3 32b Think
LMArena Math13181315
FrontierMath (Tiers 1-3)20%—
FrontierMath Tier 42.4%—
OTIS Mock AIME 2024-202581.1%—
ProofBench12%—
Omni-MATH54.6%—
MATH Level 595.2%—
FrontierMath (Feb 2025 set)8.3%—
FrontierMath Tier 4 (v1)2.1%—

Knowledge GPT-5 Nano leads

GPT-5 Nano: 35.8 (#166), Olmo 3 32b Think: 34.4 (#189)

BenchmarkGPT-5 NanoOlmo 3 32b Think
LMArena Expert13211272
GPQA Diamond69.4%—
SimpleQA Verified11.7%—
MMLU-Pro77.8%—
Vectara Hallucination Rate10.5%—
GPQA (HELM)67.9%—

Multimodal Not comparable

GPT-5 Nano: 30.7 (#102), Olmo 3 32b Think: —

BenchmarkGPT-5 NanoOlmo 3 32b Think
LMArena Vision1159—
VPCT37.2%—

Multilingual GPT-5 Nano leads

GPT-5 Nano: 45.5 (#167), Olmo 3 32b Think: 41.4 (#205)

BenchmarkGPT-5 NanoOlmo 3 32b Think
LMArena Non-English13131255
LMArena Chinese13551300
LMArena German13291290
LMArena Russian12961255
LMArena French—1291
LMArena Korean1269—
LMArena Spanish1360—

Instruction Following GPT-5 Nano leads

GPT-5 Nano: 75.2 (#72), Olmo 3 32b Think: 67.4 (#193)

BenchmarkGPT-5 NanoOlmo 3 32b Think
LMArena Instruction Following13061275
IFEval93.2%—

Long Context Olmo 3 32b Think leads

GPT-5 Nano: 31.3 (#275), Olmo 3 32b Think: 39.4 (#177)

BenchmarkGPT-5 NanoOlmo 3 32b Think
LMArena Longer Query13131296
Fiction.LiveBench44.4%—

Writing & Preference Olmo 3 32b Think leads

GPT-5 Nano: 39.4 (#244), Olmo 3 32b Think: 49.2 (#188)

BenchmarkGPT-5 NanoOlmo 3 32b Think
LMArena Text13201300
LMArena Creative Writing12501256
LMArena Multi-Turn13111289
EQ-Bench Creative Writing705—
WildBench80.6%—

Frequently asked questions

Is GPT-5 Nano better than Olmo 3 32b Think?

Olmo 3 32b Think is the stronger model overall, scoring 38.1 to 33.4 on the Noometry Index.

Is GPT-5 Nano or Olmo 3 32b Think better for coding?

Olmo 3 32b Think scores higher on coding benchmarks: 38.0 versus 33.3 in the Noometry coding category.

How many benchmarks do GPT-5 Nano and Olmo 3 32b Think share?

13 benchmarks have published results for both models. GPT-5 Nano has 48 scored results on Noometry and Olmo 3 32b Think has 14.

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