Noometry

Model comparison

GPT-4.5 vs MiMo-V2-Flash

MiMo-V2-Flash is the stronger model overall, scoring 41.3 to 37.2 on the Noometry Index.

Last verified . 16 shared benchmarks.

GPT-4.5 OpenAI

37.2

Rank #208 Confirmed

MiMo-V2-Flash Xiaomi

41.3

Rank #138 Confirmed

Summary

  • They share 16 benchmarks with published results for both. GPT-4.5 scores higher in 2 categories and MiMo-V2-Flash in 6 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where MiMo-V2-Flash leads 24.9 to 13.9.
  • MiMo-V2-Flash has downloadable open weights; the other is API-only.

Side by side

GPT-4.5MiMo-V2-Flash
ProviderOpenAIXiaomi
Noometry Index37.241.3
Released2025-02-272025-12-16
WeightsProprietaryOpen
Context window—262K
Max output—66K
Input $ / M tokens—$0.14
Output $ / M tokens—$0.28
Results tracked4221

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Category by category

Coding GPT-4.5 leads

GPT-4.5: 42.2 (#109), MiMo-V2-Flash: 36.1 (#211)

BenchmarkGPT-4.5MiMo-V2-Flash
LMArena Coding13961443
Aider Polyglot44.9%—
LMArena WebDev—1330
SciCode—25.9%
WeirdML39.4%—
LiveBench Coding75.2%—
ALE-Bench—737.95

Agentic & Tool Use Not comparable

GPT-4.5: 27.9 (#97), MiMo-V2-Flash: —

BenchmarkGPT-4.5MiMo-V2-Flash
Cybench17.5%—

Reasoning MiMo-V2-Flash leads

GPT-4.5: 13.9 (#330), MiMo-V2-Flash: 24.9 (#157)

BenchmarkGPT-4.5MiMo-V2-Flash
LMArena Hard Prompts14031420
ARC-AGI-20.8%—
SimpleBench34.5%—
ARC-AGI-110.3%—
CritPt—0%
EnigmaEval3.2%—
LiveBench Reasoning71.1%—
LiveBench Data Analysis64.3%—
Epoch Capabilities Index136.74—
ForecastBench61.7—
LiveBench69%—

Math MiMo-V2-Flash leads

GPT-4.5: 32.6 (#211), MiMo-V2-Flash: 38.3 (#139)

BenchmarkGPT-4.5MiMo-V2-Flash
LMArena Math14121396
OTIS Mock AIME 2024-202537.8%—
LiveBench Math69.3%—
MATH Level 578.6%—

Knowledge MiMo-V2-Flash leads

GPT-4.5: 32.5 (#211), MiMo-V2-Flash: 39.7 (#131)

BenchmarkGPT-4.5MiMo-V2-Flash
LMArena Expert13941425
GPQA Diamond68.7%—
Humanity's Last Exam5.4%—
Confabulations13.6%—

Multimodal Not comparable

GPT-4.5: 37.6 (#71), MiMo-V2-Flash: —

BenchmarkGPT-4.5MiMo-V2-Flash
LMArena Vision1195—
VPCT45%—

Multilingual GPT-4.5 leads

GPT-4.5: 52.5 (#83), MiMo-V2-Flash: 51.0 (#113)

BenchmarkGPT-4.5MiMo-V2-Flash
LMArena Non-English14131392
LMArena Chinese14211462
LMArena French14181429
LMArena German14571395
LMArena Japanese14161325
LMArena Korean13921358
LMArena Russian14191387
LMArena Spanish—1420

Instruction Following Too close to call

GPT-4.5: 72.6 (#134), MiMo-V2-Flash: 73.5 (#120)

BenchmarkGPT-4.5MiMo-V2-Flash
LMArena Instruction Following14041392
LiveBench Instruction Following72.3%—

Long Context MiMo-V2-Flash leads

GPT-4.5: 40.4 (#155), MiMo-V2-Flash: 43.0 (#110)

BenchmarkGPT-4.5MiMo-V2-Flash
LMArena Longer Query14061409
Fiction.LiveBench63.9%—

Writing & Preference MiMo-V2-Flash leads

GPT-4.5: 56.9 (#134), MiMo-V2-Flash: 59.7 (#106)

BenchmarkGPT-4.5MiMo-V2-Flash
LMArena Text14171411
LMArena Creative Writing13941375
LMArena Multi-Turn14441404
Short-Story Creative Writing75.6%—
EQ-Bench Creative Writing1258—
LiveBench Language61.5%—

Frequently asked questions

Is GPT-4.5 better than MiMo-V2-Flash?

MiMo-V2-Flash is the stronger model overall, scoring 41.3 to 37.2 on the Noometry Index.

Is GPT-4.5 or MiMo-V2-Flash better for coding?

GPT-4.5 scores higher on coding benchmarks: 42.2 versus 36.1 in the Noometry coding category.

How many benchmarks do GPT-4.5 and MiMo-V2-Flash share?

16 benchmarks have published results for both models. GPT-4.5 has 42 scored results on Noometry and MiMo-V2-Flash has 21.

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