Noometry

Model comparison

GPT-5.4 mini vs MiMo-V2-Flash

GPT-5.4 mini is the stronger model overall, scoring 45.0 to 41.3 on the Noometry Index. MiMo-V2-Flash costs 9.6× less per token, which makes it the better buy when GPT-5.4 mini's lead doesn't matter for your workload.

Last verified . 21 shared benchmarks.

GPT-5.4 mini OpenAI

45.0

Rank #76 Confirmed

MiMo-V2-Flash Xiaomi

41.3

Rank #138 Confirmed

Summary

  • They share 21 benchmarks with published results for both. GPT-5.4 mini scores higher in 7 categories and MiMo-V2-Flash in 1 category; 5 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where GPT-5.4 mini leads 51.5 to 39.7.
  • The biggest single-benchmark swing is SciCode: 49.9% for GPT-5.4 mini and 25.9% for MiMo-V2-Flash.
  • MiMo-V2-Flash is cheaper at $0.14 / $0.28 per million input/output tokens, against $0.75 / $4.50 for GPT-5.4 mini.
  • GPT-5.4 mini accepts more context: 400K tokens versus 262K.
  • MiMo-V2-Flash has downloadable open weights; the other is API-only.

Side by side

GPT-5.4 miniMiMo-V2-Flash
ProviderOpenAIXiaomi
Noometry Index45.041.3
Released2026-03-172025-12-16
WeightsProprietaryOpen
Context window400K262K
Max output128K66K
Input $ / M tokens$0.75$0.14
Output $ / M tokens$4.50$0.28
Results tracked4621

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Category by category

Coding GPT-5.4 mini leads

GPT-5.4 mini: 45.2 (#72), MiMo-V2-Flash: 36.1 (#211)

BenchmarkGPT-5.4 miniMiMo-V2-Flash
LMArena WebDev13971330
SciCode49.9%25.9%
LMArena Coding14381443
ALE-Bench1,189737.95
FrontierCode27%—
WeirdML60.3%—

Agentic & Tool Use Not comparable

GPT-5.4 mini: 29.9 (#81), MiMo-V2-Flash: —

BenchmarkGPT-5.4 miniMiMo-V2-Flash
DeepResearch Bench36.3%—

Reasoning GPT-5.4 mini leads

GPT-5.4 mini: 30.4 (#85), MiMo-V2-Flash: 24.9 (#157)

BenchmarkGPT-5.4 miniMiMo-V2-Flash
CritPt10%0%
LMArena Hard Prompts14241420
ARC-AGI-218.9%—
Kagi LLM Benchmark37.9%—
NYT Connections (extended)61.8%—
ARC-AGI-163.7%—
Chess Puzzles24%—
Thematic Generalization61.7%—
Mystery Game Puzzles11%—
DTBench80%—
LMCA40.8%—
Epoch Capabilities Index148.84—
ForecastBench57—

Math GPT-5.4 mini leads

GPT-5.4 mini: 45.5 (#75), MiMo-V2-Flash: 38.3 (#139)

BenchmarkGPT-5.4 miniMiMo-V2-Flash
LMArena Math14191396
FrontierMath (Tiers 1-3)51.2%—
FrontierMath Tier 49.8%—
OTIS Mock AIME 2024-202588.9%—
ProofBench21%—
FrontierMath (Feb 2025 set)28.3%—
FrontierMath Tier 4 (v1)2.1%—

Knowledge GPT-5.4 mini leads

GPT-5.4 mini: 51.5 (#67), MiMo-V2-Flash: 39.7 (#131)

BenchmarkGPT-5.4 miniMiMo-V2-Flash
LMArena Expert14351425
GPQA Diamond86.9%—
SimpleQA Verified29.4%—
Vectara Hallucination Rate5.5%—

Multimodal Not comparable

GPT-5.4 mini: 39.7 (#56), MiMo-V2-Flash: —

BenchmarkGPT-5.4 miniMiMo-V2-Flash
LMArena Vision1245—

Multilingual Too close to call

GPT-5.4 mini: 51.9 (#96), MiMo-V2-Flash: 51.0 (#113)

BenchmarkGPT-5.4 miniMiMo-V2-Flash
LMArena Non-English14051392
LMArena Chinese14461462
LMArena French14401429
LMArena German14091395
LMArena Japanese13741325
LMArena Korean13681358
LMArena Russian14171387
LMArena Spanish14051420

Instruction Following Too close to call

GPT-5.4 mini: 74.1 (#102), MiMo-V2-Flash: 73.5 (#120)

BenchmarkGPT-5.4 miniMiMo-V2-Flash
LMArena Instruction Following14051392

Long Context Too close to call

GPT-5.4 mini: 43.0 (#112), MiMo-V2-Flash: 43.0 (#110)

BenchmarkGPT-5.4 miniMiMo-V2-Flash
LMArena Longer Query14071409

Writing & Preference GPT-5.4 mini leads

GPT-5.4 mini: 64.0 (#58), MiMo-V2-Flash: 59.7 (#106)

BenchmarkGPT-5.4 miniMiMo-V2-Flash
LMArena Text14121411
LMArena Creative Writing13701375
LMArena Multi-Turn14291404
EQ-Bench Creative Writing1665—

Frequently asked questions

Is GPT-5.4 mini better than MiMo-V2-Flash?

GPT-5.4 mini is the stronger model overall, scoring 45.0 to 41.3 on the Noometry Index. MiMo-V2-Flash costs 9.6× less per token, which makes it the better buy when GPT-5.4 mini's lead doesn't matter for your workload.

Which is cheaper, GPT-5.4 mini or MiMo-V2-Flash?

MiMo-V2-Flash is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; GPT-5.4 mini lists at $0.75 and $4.50.

Is GPT-5.4 mini or MiMo-V2-Flash better for coding?

GPT-5.4 mini scores higher on coding benchmarks: 45.2 versus 36.1 in the Noometry coding category.

Which has the bigger context window?

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

How many benchmarks do GPT-5.4 mini and MiMo-V2-Flash share?

21 benchmarks have published results for both models. GPT-5.4 mini has 46 scored results on Noometry and MiMo-V2-Flash has 21.

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