Noometry

Model comparison

GPT-4.5 vs MiMo-V2-Omni

MiMo-V2-Omni is the stronger model overall, scoring 43.6 to 37.2 on the Noometry Index.

Last verified . 17 shared benchmarks.

GPT-4.5 OpenAI

37.2

Rank #208 Confirmed

MiMo-V2-Omni Xiaomi

43.6

Rank #88 Confirmed

Summary

  • They share 17 benchmarks with published results for both. GPT-4.5 scores higher in 1 category and MiMo-V2-Omni in 8 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where MiMo-V2-Omni leads 29.7 to 13.9.

Side by side

GPT-4.5MiMo-V2-Omni
ProviderOpenAIXiaomi
Noometry Index37.243.6
Released2025-02-272026-03-18
WeightsProprietaryProprietary
Context window—262K
Max output—131K
Input $ / M tokens—$0.14
Output $ / M tokens—$0.28
Results tracked4218

Sponsored placements are available on pages like this one. Advertise on Noometry

Category by category

Coding MiMo-V2-Omni leads

GPT-4.5: 42.2 (#109), MiMo-V2-Omni: 43.3 (#89)

BenchmarkGPT-4.5MiMo-V2-Omni
LMArena Coding13961466
Aider Polyglot44.9%—
WeirdML39.4%—
LiveBench Coding75.2%—

Agentic & Tool Use Not comparable

GPT-4.5: 27.9 (#97), MiMo-V2-Omni: —

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

Reasoning MiMo-V2-Omni leads

GPT-4.5: 13.9 (#330), MiMo-V2-Omni: 29.7 (#88)

BenchmarkGPT-4.5MiMo-V2-Omni
LMArena Hard Prompts14031445
ARC-AGI-20.8%—
SimpleBench34.5%—
ARC-AGI-110.3%—
EnigmaEval3.2%—
LiveBench Reasoning71.1%—
LiveBench Data Analysis64.3%—
Epoch Capabilities Index136.74—
ForecastBench61.7—
LiveBench69%—

Math MiMo-V2-Omni leads

GPT-4.5: 32.6 (#211), MiMo-V2-Omni: 39.1 (#115)

BenchmarkGPT-4.5MiMo-V2-Omni
LMArena Math14121430
OTIS Mock AIME 2024-202537.8%—
LiveBench Math69.3%—
MATH Level 578.6%—

Knowledge MiMo-V2-Omni leads

GPT-4.5: 32.5 (#211), MiMo-V2-Omni: 40.5 (#118)

BenchmarkGPT-4.5MiMo-V2-Omni
LMArena Expert13941449
GPQA Diamond68.7%—
Humanity's Last Exam5.4%—
Confabulations13.6%—

Multimodal Too close to call

GPT-4.5: 37.6 (#71), MiMo-V2-Omni: 38.6 (#63)

BenchmarkGPT-4.5MiMo-V2-Omni
LMArena Vision11951228
VPCT45%—

Multilingual Too close to call

GPT-4.5: 52.5 (#83), MiMo-V2-Omni: 51.8 (#102)

BenchmarkGPT-4.5MiMo-V2-Omni
LMArena Non-English14131404
LMArena Chinese14211465
LMArena French14181447
LMArena German14571399
LMArena Japanese14161317
LMArena Korean13921355
LMArena Russian14191412
LMArena Spanish—1434

Instruction Following MiMo-V2-Omni leads

GPT-4.5: 72.6 (#134), MiMo-V2-Omni: 75.2 (#66)

BenchmarkGPT-4.5MiMo-V2-Omni
LMArena Instruction Following14041428
LiveBench Instruction Following72.3%—

Long Context MiMo-V2-Omni leads

GPT-4.5: 40.4 (#155), MiMo-V2-Omni: 44.1 (#76)

BenchmarkGPT-4.5MiMo-V2-Omni
LMArena Longer Query14061442
Fiction.LiveBench63.9%—

Writing & Preference MiMo-V2-Omni leads

GPT-4.5: 56.9 (#134), MiMo-V2-Omni: 61.4 (#87)

BenchmarkGPT-4.5MiMo-V2-Omni
LMArena Text14171423
LMArena Creative Writing13941392
LMArena Multi-Turn14441445
Short-Story Creative Writing75.6%—
EQ-Bench Creative Writing1258—
LiveBench Language61.5%—

Frequently asked questions

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

MiMo-V2-Omni is the stronger model overall, scoring 43.6 to 37.2 on the Noometry Index.

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

MiMo-V2-Omni scores higher on coding benchmarks: 43.3 versus 42.2 in the Noometry coding category.

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

17 benchmarks have published results for both models. GPT-4.5 has 42 scored results on Noometry and MiMo-V2-Omni has 18.

Related comparisons

Go deeper