Noometry

Model comparison

Grok 4 vs MiMo-V2.6-Pro

MiMo-V2.6-Pro is the stronger model overall, scoring 50.3 to 48.1 on the Noometry Index.

Last verified . 13 shared benchmarks.

Grok 4 xAI

48.1

Rank #56 Confirmed

MiMo-V2.6-Pro Xiaomi

50.3

Rank #49 Confirmed

Summary

  • They share 13 benchmarks with published results for both. Grok 4 scores higher in 3 categories and MiMo-V2.6-Pro in 7 categories; 10 gaps are clear of the uncertainty.
  • The widest gap is in long context, where Grok 4 leads 63.1 to 46.0.
  • MiMo-V2.6-Pro has downloadable open weights; the other is API-only.

Side by side

Grok 4MiMo-V2.6-Pro
ProviderxAIXiaomi
Noometry Index48.150.3
Released2025-07-092026-09-21
WeightsProprietaryOpen
Context window—1.05M
Max output—131K
Input $ / M tokens—$0.43
Output $ / M tokens—$0.87
Results tracked4819

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Category by category

Coding MiMo-V2.6-Pro leads

Grok 4: 50.3 (#46), MiMo-V2.6-Pro: 55.5 (#23)

BenchmarkGrok 4MiMo-V2.6-Pro
LMArena Coding14081534
Aider Polyglot79.6%—
LMArena WebDev—1629
SciCode—60.9%
WeirdML45.7%—
ALE-Bench—1,158

Agentic & Tool Use MiMo-V2.6-Pro leads

Grok 4: 32.3 (#68), MiMo-V2.6-Pro: 37.5 (#35)

BenchmarkGrok 4MiMo-V2.6-Pro
Terminal-Bench27.2%—
APEX-Agents—59.5%
Berkeley Function Calling Leaderboard63%—
GDPval21.1%—
Cybench43%—
DeepResearch Bench47.3%—
BALROG43.6%—
LMArena Search1142—
METR Time Horizons66.6%—

Reasoning MiMo-V2.6-Pro leads

Grok 4: 36.7 (#65), MiMo-V2.6-Pro: 43.1 (#50)

BenchmarkGrok 4MiMo-V2.6-Pro
LMArena Hard Prompts14091512
ARC-AGI-216%—
SimpleBench60.5%—
Kagi LLM Benchmark73.6%—
ARC-AGI-166.7%—
CritPt—26.6%
Chess Puzzles28%—
Epoch Capabilities Index146.44—
ForecastBench60.9—

Math MiMo-V2.6-Pro leads

Grok 4: 48.4 (#64), MiMo-V2.6-Pro: 54.5 (#45)

BenchmarkGrok 4MiMo-V2.6-Pro
LMArena Math14221494
OTIS Mock AIME 2024-202584%—
ProofBench—70%
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-Pro: 43.5 (#92)

BenchmarkGrok 4MiMo-V2.6-Pro
LMArena Expert14151543
GPQA Diamond87%—
MMLU-Pro85.1%—
Confabulations12.4%—
GPQA (HELM)72.7%—

Multimodal MiMo-V2.6-Pro leads

Grok 4: 33.7 (#94), MiMo-V2.6-Pro: 40.8 (#43)

BenchmarkGrok 4MiMo-V2.6-Pro
LMArena Vision12101264
GeoBench45%—

Multilingual MiMo-V2.6-Pro leads

Grok 4: 51.8 (#103), MiMo-V2.6-Pro: 56.9 (#14)

BenchmarkGrok 4MiMo-V2.6-Pro
LMArena Non-English14031474
LMArena Chinese14271529
LMArena Russian14101480
LMArena French1418—
LMArena German1429—
LMArena Japanese1394—
LMArena Korean1377—
LMArena Spanish1420—

Instruction Following Grok 4 leads

Grok 4: 79.2 (#5), MiMo-V2.6-Pro: 78.2 (#12)

BenchmarkGrok 4MiMo-V2.6-Pro
LMArena Instruction Following13871493
IFEval94.9%—

Long Context Grok 4 leads

Grok 4: 63.1 (#4), MiMo-V2.6-Pro: 46.0 (#27)

BenchmarkGrok 4MiMo-V2.6-Pro
LMArena Longer Query14091501
Fiction.LiveBench94.4%—

Writing & Preference MiMo-V2.6-Pro leads

Grok 4: 58.5 (#116), MiMo-V2.6-Pro: 66.8 (#33)

BenchmarkGrok 4MiMo-V2.6-Pro
LMArena Text14111492
LMArena Creative Writing13971468
LMArena Multi-Turn14161464
Short-Story Creative Writing76.9%—
WildBench79.7%—

Frequently asked questions

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

MiMo-V2.6-Pro is the stronger model overall, scoring 50.3 to 48.1 on the Noometry Index.

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

MiMo-V2.6-Pro scores higher on coding benchmarks: 55.5 versus 50.3 in the Noometry coding category.

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

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

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