Noometry

Model comparison

Grok 4 vs MiMo-V2.6-Flash

Grok 4 and MiMo-V2.6-Flash score almost the same on the Noometry Index (48.1 vs 48.5), so choose on price, context window or the category you care about most.

Last verified . 15 shared benchmarks.

Grok 4 xAI

48.1

Rank #56 Confirmed

MiMo-V2.6-Flash Xiaomi

48.5

Rank #55 Confirmed

Summary

  • They share 15 benchmarks with published results for both. Grok 4 scores higher in 4 categories and MiMo-V2.6-Flash in 5 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in long context, where Grok 4 leads 63.1 to 44.8.
  • MiMo-V2.6-Flash has downloadable open weights; the other is API-only.

Side by side

Grok 4MiMo-V2.6-Flash
ProviderxAIXiaomi
Noometry Index48.148.5
Released2025-07-092026-09-21
WeightsProprietaryOpen
Context window—1.05M
Max output—131K
Input $ / M tokens—$0.14
Output $ / M tokens—$0.28
Results tracked4819

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Category by category

Coding MiMo-V2.6-Flash leads

Grok 4: 50.3 (#46), MiMo-V2.6-Flash: 53.4 (#30)

BenchmarkGrok 4MiMo-V2.6-Flash
LMArena Coding14081504
Aider Polyglot79.6%—
LMArena WebDev—1637
SciCode—51.3%
WeirdML45.7%—

Agentic & Tool Use Not comparable

Grok 4: 32.3 (#68), MiMo-V2.6-Flash: —

BenchmarkGrok 4MiMo-V2.6-Flash
Terminal-Bench27.2%—
Berkeley Function Calling Leaderboard63%—
GDPval21.1%—
Cybench43%—
DeepResearch Bench47.3%—
BALROG43.6%—
LMArena Search1142—
METR Time Horizons66.6%—

Reasoning Too close to call

Grok 4: 36.7 (#65), MiMo-V2.6-Flash: 36.5 (#66)

BenchmarkGrok 4MiMo-V2.6-Flash
LMArena Hard Prompts14091482
ARC-AGI-216%—
SimpleBench60.5%—
Kagi LLM Benchmark73.6%—
ARC-AGI-166.7%—
CritPt—12%
Chess Puzzles28%—
Epoch Capabilities Index146.44—
ForecastBench60.9—

Math MiMo-V2.6-Flash leads

Grok 4: 48.4 (#64), MiMo-V2.6-Flash: 51.9 (#52)

BenchmarkGrok 4MiMo-V2.6-Flash
LMArena Math14221468
OTIS Mock AIME 2024-202584%—
ProofBench—63%
Omni-MATH60.3%—
FrontierMath (Feb 2025 set)19.7%—
FrontierMath Tier 4 (v1)2.1%—

Knowledge Grok 4 leads

Grok 4: 53.8 (#55), MiMo-V2.6-Flash: 42.2 (#99)

BenchmarkGrok 4MiMo-V2.6-Flash
LMArena Expert14151501
GPQA Diamond87%—
MMLU-Pro85.1%—
Confabulations12.4%—
GPQA (HELM)72.7%—

Multimodal MiMo-V2.6-Flash leads

Grok 4: 33.7 (#94), MiMo-V2.6-Flash: 40.5 (#47)

BenchmarkGrok 4MiMo-V2.6-Flash
LMArena Vision12101259
GeoBench45%—

Multilingual MiMo-V2.6-Flash leads

Grok 4: 51.8 (#103), MiMo-V2.6-Flash: 54.0 (#51)

BenchmarkGrok 4MiMo-V2.6-Flash
LMArena Non-English14031434
LMArena Chinese14271511
LMArena French14181475
LMArena Russian14101409
LMArena Spanish14201456
LMArena German1429—
LMArena Japanese1394—
LMArena Korean1377—

Instruction Following Grok 4 leads

Grok 4: 79.2 (#5), MiMo-V2.6-Flash: 76.8 (#35)

BenchmarkGrok 4MiMo-V2.6-Flash
LMArena Instruction Following13871463
IFEval94.9%—

Long Context Grok 4 leads

Grok 4: 63.1 (#4), MiMo-V2.6-Flash: 44.8 (#57)

BenchmarkGrok 4MiMo-V2.6-Flash
LMArena Longer Query14091463
Fiction.LiveBench94.4%—

Writing & Preference MiMo-V2.6-Flash leads

Grok 4: 58.5 (#116), MiMo-V2.6-Flash: 63.1 (#67)

BenchmarkGrok 4MiMo-V2.6-Flash
LMArena Text14111455
LMArena Creative Writing13971400
LMArena Multi-Turn14161451
Short-Story Creative Writing76.9%—
WildBench79.7%—

Frequently asked questions

Is Grok 4 better than MiMo-V2.6-Flash?

Grok 4 and MiMo-V2.6-Flash score almost the same on the Noometry Index (48.1 vs 48.5), so choose on price, context window or the category you care about most.

Is Grok 4 or MiMo-V2.6-Flash better for coding?

MiMo-V2.6-Flash scores higher on coding benchmarks: 53.4 versus 50.3 in the Noometry coding category.

How many benchmarks do Grok 4 and MiMo-V2.6-Flash share?

15 benchmarks have published results for both models. Grok 4 has 48 scored results on Noometry and MiMo-V2.6-Flash has 19.

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