Noometry

Model comparison

GPT-4.5 vs Mistral Small

GPT-4.5 is the stronger model overall, scoring 37.2 to 33.4 on the Noometry Index.

Last verified . 27 shared benchmarks.

GPT-4.5 OpenAI

37.2

Rank #208 Confirmed

Mistral Small Mistral AI

33.4

Rank #243 Confirmed

Summary

  • They share 27 benchmarks with published results for both. GPT-4.5 scores higher in 8 categories and Mistral Small in 2 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where GPT-4.5 leads 32.6 to 16.4.
  • The biggest single-benchmark swing is LiveBench Coding: 75.2% for GPT-4.5 and 36.2% for Mistral Small.
  • Mistral Small has downloadable open weights; the other is API-only.

Side by side

GPT-4.5Mistral Small
ProviderOpenAIMistral AI
Noometry Index37.233.4
Released2025-02-272024-02-26
WeightsProprietaryOpen
Context window—262K
Max output—256K
Input $ / M tokens—$0.15
Output $ / M tokens—$0.60
Results tracked4239

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Category by category

Coding GPT-4.5 leads

GPT-4.5: 42.2 (#109), Mistral Small: 34.0 (#247)

BenchmarkGPT-4.5Mistral Small
LiveBench Coding75.2%36.2%
LMArena Coding13961362
Aider Polyglot44.9%—
SciCode—26.5%
WeirdML39.4%—
BigCodeBench Instruct—36.1%
BigCodeBench Complete—46.6%
ALE-Bench—497.62

Agentic & Tool Use Too close to call

GPT-4.5: 27.9 (#97), Mistral Small: 28.1 (#93)

BenchmarkGPT-4.5Mistral Small
Berkeley Function Calling Leaderboard—37.1%
Cybench17.5%—

Reasoning Mistral Small leads

GPT-4.5: 13.9 (#330), Mistral Small: 19.8 (#250)

BenchmarkGPT-4.5Mistral Small
LiveBench Reasoning71.1%44.8%
LMArena Hard Prompts14031335
LiveBench Data Analysis64.3%53.7%
LiveBench69%44%
ARC-AGI-20.8%—
SimpleBench34.5%—
Kagi LLM Benchmark—37.8%
ARC-AGI-110.3%—
CritPt—0%
EnigmaEval3.2%—
DTBench—70.9%
LMCA—20.6%
Epoch Capabilities Index136.74—
ForecastBench61.7—

Math GPT-4.5 leads

GPT-4.5: 32.6 (#211), Mistral Small: 16.4 (#293)

BenchmarkGPT-4.5Mistral Small
OTIS Mock AIME 2024-202537.8%5.8%
LiveBench Math69.3%39.9%
LMArena Math14121341
MATH Level 578.6%46.8%

Knowledge GPT-4.5 leads

GPT-4.5: 32.5 (#211), Mistral Small: 31.0 (#222)

BenchmarkGPT-4.5Mistral Small
GPQA Diamond68.7%47.5%
LMArena Expert13941291
Humanity's Last Exam5.4%—
Confabulations13.6%—
Vectara Hallucination Rate—5.1%
MMLU—68.7%

Multimodal GPT-4.5 leads

GPT-4.5: 37.6 (#71), Mistral Small: 33.5 (#96)

BenchmarkGPT-4.5Mistral Small
LMArena Vision11951142
VPCT45%—

Multilingual GPT-4.5 leads

GPT-4.5: 52.5 (#83), Mistral Small: 45.5 (#169)

BenchmarkGPT-4.5Mistral Small
LMArena Non-English14131315
LMArena Chinese14211340
LMArena French14181337
LMArena German14571340
LMArena Japanese14161275
LMArena Korean13921259
LMArena Russian14191324
LMArena Spanish—1346

Instruction Following GPT-4.5 leads

GPT-4.5: 72.6 (#134), Mistral Small: 66.4 (#209)

BenchmarkGPT-4.5Mistral Small
LiveBench Instruction Following72.3%63.7%
LMArena Instruction Following14041310

Long Context Too close to call

GPT-4.5: 40.4 (#155), Mistral Small: 40.4 (#156)

BenchmarkGPT-4.5Mistral Small
LMArena Longer Query14061327
Fiction.LiveBench63.9%—

Writing & Preference GPT-4.5 leads

GPT-4.5: 56.9 (#134), Mistral Small: 52.5 (#171)

BenchmarkGPT-4.5Mistral Small
LMArena Text14171338
LMArena Creative Writing13941305
LMArena Multi-Turn14441344
LiveBench Language61.5%30.5%
Short-Story Creative Writing75.6%—
EQ-Bench Creative Writing1258—

Frequently asked questions

Is GPT-4.5 better than Mistral Small?

GPT-4.5 is the stronger model overall, scoring 37.2 to 33.4 on the Noometry Index.

Is GPT-4.5 or Mistral Small better for coding?

GPT-4.5 scores higher on coding benchmarks: 42.2 versus 34.0 in the Noometry coding category.

How many benchmarks do GPT-4.5 and Mistral Small share?

27 benchmarks have published results for both models. GPT-4.5 has 42 scored results on Noometry and Mistral Small has 39.

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