Noometry

Model comparison

GPT-4.5 vs o3-mini

GPT-4.5 and o3-mini score almost the same on the Noometry Index (37.2 vs 36.7), so choose on price, context window or the category you care about most.

Last verified . 37 shared benchmarks.

GPT-4.5 OpenAI

37.2

Rank #208 Confirmed

o3-mini OpenAI

36.7

Rank #212 Confirmed

Summary

  • They share 37 benchmarks with published results for both. GPT-4.5 scores higher in 5 categories and o3-mini in 4 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in multilingual, where GPT-4.5 leads 52.5 to 45.7.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 37.8% for GPT-4.5 and 76.9% for o3-mini.

Side by side

GPT-4.5o3-mini
ProviderOpenAIOpenAI
Noometry Index37.236.7
Released2025-02-272024-12-20
WeightsProprietaryProprietary
Context window—200K
Max output—100K
Input $ / M tokens—$1.10
Output $ / M tokens—$4.40
Results tracked4251

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Category by category

Coding GPT-4.5 leads

GPT-4.5: 42.2 (#109), o3-mini: 40.8 (#132)

BenchmarkGPT-4.5o3-mini
Aider Polyglot44.9%60.4%
WeirdML39.4%43.7%
LiveBench Coding75.2%82.7%
LMArena Coding13961378
SciCode—39.8%
GSO—1.3%
CadEval—54%

Agentic & Tool Use o3-mini leads

GPT-4.5: 27.9 (#97), o3-mini: 29.6 (#84)

BenchmarkGPT-4.5o3-mini
Cybench17.5%22.5%

Reasoning o3-mini leads

GPT-4.5: 13.9 (#330), o3-mini: 16.3 (#305)

BenchmarkGPT-4.5o3-mini
ARC-AGI-20.8%3%
SimpleBench34.5%22.8%
ARC-AGI-110.3%34.5%
LiveBench Reasoning71.1%89.6%
LMArena Hard Prompts14031366
LiveBench Data Analysis64.3%70.6%
Epoch Capabilities Index136.74140.34
ForecastBench61.759.6
LiveBench69%75.9%
CritPt—0.3%
Chess Puzzles—17%
EnigmaEval3.2%—
Mystery Game Puzzles—7%
DTBench—68.8%
LMCA—19%

Math GPT-4.5 leads

GPT-4.5: 32.6 (#211), o3-mini: 28.1 (#244)

BenchmarkGPT-4.5o3-mini
OTIS Mock AIME 2024-202537.8%76.9%
LiveBench Math69.3%77.3%
LMArena Math14121396
MATH Level 578.6%96.5%
FrontierMath (Tiers 1-3)—18.6%
FrontierMath Tier 4—0%
FrontierMath (Feb 2025 set)—12.4%
FrontierMath Tier 4 (v1)—4.2%

Knowledge o3-mini leads

GPT-4.5: 32.5 (#211), o3-mini: 38.3 (#146)

BenchmarkGPT-4.5o3-mini
GPQA Diamond68.7%77%
Confabulations13.6%17.9%
LMArena Expert13941364
Humanity's Last Exam5.4%—
SimpleQA Verified—15.3%

Multimodal Not comparable

GPT-4.5: 37.6 (#71), o3-mini: —

BenchmarkGPT-4.5o3-mini
LMArena Vision1195—
VPCT45%—

Multilingual GPT-4.5 leads

GPT-4.5: 52.5 (#83), o3-mini: 45.7 (#164)

BenchmarkGPT-4.5o3-mini
LMArena Non-English14131319
LMArena Chinese14211379
LMArena French14181334
LMArena German14571303
LMArena Japanese14161286
LMArena Korean13921314
LMArena Russian14191304
LMArena Spanish—1321

Instruction Following o3-mini leads

GPT-4.5: 72.6 (#134), o3-mini: 75.1 (#72)

BenchmarkGPT-4.5o3-mini
LiveBench Instruction Following72.3%84.4%
LMArena Instruction Following14041337

Long Context GPT-4.5 leads

GPT-4.5: 40.4 (#155), o3-mini: 33.8 (#256)

BenchmarkGPT-4.5o3-mini
Fiction.LiveBench63.9%50%
LMArena Longer Query14061343

Writing & Preference GPT-4.5 leads

GPT-4.5: 56.9 (#134), o3-mini: 50.3 (#182)

BenchmarkGPT-4.5o3-mini
LMArena Text14171337
LMArena Creative Writing13941286
Short-Story Creative Writing75.6%61.7%
LMArena Multi-Turn14441320
LiveBench Language61.5%50.7%
EQ-Bench Creative Writing1258—

Frequently asked questions

Is GPT-4.5 better than o3-mini?

GPT-4.5 and o3-mini score almost the same on the Noometry Index (37.2 vs 36.7), so choose on price, context window or the category you care about most.

Is GPT-4.5 or o3-mini better for coding?

GPT-4.5 scores higher on coding benchmarks: 42.2 versus 40.8 in the Noometry coding category.

How many benchmarks do GPT-4.5 and o3-mini share?

37 benchmarks have published results for both models. GPT-4.5 has 42 scored results on Noometry and o3-mini has 51.

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