Noometry

Model comparison

GPT-5.4 nano vs MiMo-V2-Omni

MiMo-V2-Omni is the stronger model overall, scoring 43.6 to 41.9 on the Noometry Index.

Last verified . 18 shared benchmarks.

GPT-5.4 nano OpenAI

41.9

Rank #125 Confirmed

MiMo-V2-Omni Xiaomi

43.6

Rank #88 Confirmed

Summary

  • They share 18 benchmarks with published results for both. GPT-5.4 nano scores higher in 3 categories and MiMo-V2-Omni in 6 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where MiMo-V2-Omni leads 29.7 to 23.7.
  • MiMo-V2-Omni is cheaper at $0.14 / $0.28 per million input/output tokens, against $0.20 / $1.25 for GPT-5.4 nano.
  • GPT-5.4 nano accepts more context: 400K tokens versus 262K.

Side by side

GPT-5.4 nanoMiMo-V2-Omni
ProviderOpenAIXiaomi
Noometry Index41.943.6
Released2026-03-172026-03-18
WeightsProprietaryProprietary
Context window400K262K
Max output128K131K
Input $ / M tokens$0.20$0.14
Output $ / M tokens$1.25$0.28
Results tracked4018

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Category by category

Coding Too close to call

GPT-5.4 nano: 43.6 (#84), MiMo-V2-Omni: 43.3 (#89)

BenchmarkGPT-5.4 nanoMiMo-V2-Omni
LMArena Coding14051466
SciCode46.9%—
WeirdML49.2%—
ALE-Bench1,005—

Reasoning MiMo-V2-Omni leads

GPT-5.4 nano: 23.7 (#173), MiMo-V2-Omni: 29.7 (#88)

BenchmarkGPT-5.4 nanoMiMo-V2-Omni
LMArena Hard Prompts13811445
ARC-AGI-25.7%—
Kagi LLM Benchmark39.7%—
ARC-AGI-151.5%—
CritPt9.3%—
Chess Puzzles30%—
Mystery Game Puzzles9%—
DTBench80.3%—
LMCA36.9%—
Epoch Capabilities Index145.81—
ForecastBench57.3—

Math GPT-5.4 nano leads

GPT-5.4 nano: 40.9 (#88), MiMo-V2-Omni: 39.1 (#115)

BenchmarkGPT-5.4 nanoMiMo-V2-Omni
LMArena Math14061430
FrontierMath (Tiers 1-3)44.9%—
FrontierMath Tier 412.2%—
OTIS Mock AIME 2024-202587.8%—
ProofBench5%—
FrontierMath (Feb 2025 set)25.9%—
FrontierMath Tier 4 (v1)6.3%—

Knowledge GPT-5.4 nano leads

GPT-5.4 nano: 41.9 (#103), MiMo-V2-Omni: 40.5 (#118)

BenchmarkGPT-5.4 nanoMiMo-V2-Omni
LMArena Expert13961449
GPQA Diamond78.5%—
SimpleQA Verified11.7%—
Vectara Hallucination Rate3.1%—

Multimodal MiMo-V2-Omni leads

GPT-5.4 nano: 36.7 (#78), MiMo-V2-Omni: 38.6 (#63)

BenchmarkGPT-5.4 nanoMiMo-V2-Omni
LMArena Vision11961228

Multilingual MiMo-V2-Omni leads

GPT-5.4 nano: 48.6 (#140), MiMo-V2-Omni: 51.8 (#102)

BenchmarkGPT-5.4 nanoMiMo-V2-Omni
LMArena Non-English13591404
LMArena Chinese13921465
LMArena French13961447
LMArena German13671399
LMArena Japanese13431317
LMArena Korean13201355
LMArena Russian13631412
LMArena Spanish13711434

Instruction Following MiMo-V2-Omni leads

GPT-5.4 nano: 71.9 (#144), MiMo-V2-Omni: 75.2 (#66)

BenchmarkGPT-5.4 nanoMiMo-V2-Omni
LMArena Instruction Following13621428

Long Context MiMo-V2-Omni leads

GPT-5.4 nano: 41.6 (#137), MiMo-V2-Omni: 44.1 (#76)

BenchmarkGPT-5.4 nanoMiMo-V2-Omni
LMArena Longer Query13661442

Writing & Preference MiMo-V2-Omni leads

GPT-5.4 nano: 55.7 (#142), MiMo-V2-Omni: 61.4 (#87)

BenchmarkGPT-5.4 nanoMiMo-V2-Omni
LMArena Text13721423
LMArena Creative Writing13141392
LMArena Multi-Turn13821445

Frequently asked questions

Is GPT-5.4 nano better than MiMo-V2-Omni?

MiMo-V2-Omni is the stronger model overall, scoring 43.6 to 41.9 on the Noometry Index.

Which is cheaper, GPT-5.4 nano or MiMo-V2-Omni?

MiMo-V2-Omni is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; GPT-5.4 nano lists at $0.20 and $1.25.

Is GPT-5.4 nano or MiMo-V2-Omni better for coding?

They score almost the same on coding (43.6 vs 43.3); test both on your own repository before choosing.

Which has the bigger context window?

GPT-5.4 nano does, with 400K tokens against 262K.

How many benchmarks do GPT-5.4 nano and MiMo-V2-Omni share?

18 benchmarks have published results for both models. GPT-5.4 nano has 40 scored results on Noometry and MiMo-V2-Omni has 18.

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