Noometry

Model comparison

Grok 4 vs Kimi K2.7 Code

Grok 4 is the stronger model overall, scoring 48.1 to 43.3 on the Noometry Index.

Last verified . 6 shared benchmarks.

Grok 4 xAI

48.1

Rank #56 Confirmed

Kimi K2.7 Code Moonshot AI

43.3

Rank #94 Confirmed

Summary

  • They share 6 benchmarks with published results for both. Grok 4 scores higher in 3 categories and Kimi K2.7 Code in 2 categories; 4 gaps are clear of the uncertainty.
  • The widest gap is in agentic & tool use, where Grok 4 leads 32.3 to 24.0.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 84% for Grok 4 and 95.6% for Kimi K2.7 Code.
  • Kimi K2.7 Code has downloadable open weights; the other is API-only.

Side by side

Grok 4Kimi K2.7 Code
ProviderxAIMoonshot AI
Noometry Index48.143.3
Released2025-07-092026-06-12
WeightsProprietaryOpen
Context window—262K
Max output—262K
Input $ / M tokens—$0.95
Output $ / M tokens—$4
Results tracked4819

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Category by category

Coding Grok 4 leads

Grok 4: 50.3 (#46), Kimi K2.7 Code: 42.9 (#95)

BenchmarkGrok 4Kimi K2.7 Code
WeirdML45.7%54.1%
DeepSWE—30.5%
FrontierCode—30.1%
Aider Polyglot79.6%—
LMArena WebDev—1473
SciCode—47.5%
LMArena Coding1408—
ALE-Bench—886.23

Agentic & Tool Use Grok 4 leads

Grok 4: 32.3 (#68), Kimi K2.7 Code: 24.0 (#122)

BenchmarkGrok 4Kimi K2.7 Code
Terminal-Bench27.2%—
APEX-Agents—37.6%
Berkeley Function Calling Leaderboard63%—
GDPval21.1%—
Cybench43%—
DeepResearch Bench47.3%—
BALROG43.6%—
GBAEval—0.9%
LMArena Search1142—
METR Time Horizons66.6%—
Vending-Bench 2—5,083

Reasoning Kimi K2.7 Code leads

Grok 4: 36.7 (#65), Kimi K2.7 Code: 39.0 (#61)

BenchmarkGrok 4Kimi K2.7 Code
SimpleBench60.5%57.9%
Chess Puzzles28%21%
Epoch Capabilities Index146.44149.97
ARC-AGI-216%—
Kagi LLM Benchmark73.6%—
ARC-AGI-166.7%—
CritPt—10%
LMArena Hard Prompts1409—
Surface Evolver Bench—48.8%
ForecastBench60.9—

Math Kimi K2.7 Code leads

Grok 4: 48.4 (#64), Kimi K2.7 Code: 52.9 (#48)

BenchmarkGrok 4Kimi K2.7 Code
OTIS Mock AIME 2024-202584%95.6%
FrontierMath (Tiers 1-3)—54%
FrontierMath Tier 4—12.2%
Omni-MATH60.3%—
LMArena Math1422—
FrontierMath (Feb 2025 set)19.7%—
FrontierMath Tier 4 (v1)2.1%—

Knowledge Too close to call

Grok 4: 53.8 (#55), Kimi K2.7 Code: 53.5 (#57)

BenchmarkGrok 4Kimi K2.7 Code
GPQA Diamond87%87.9%
SimpleQA Verified—36.5%
MMLU-Pro85.1%—
Confabulations12.4%—
GPQA (HELM)72.7%—
LMArena Expert1415—

Multimodal Not comparable

Grok 4: 33.7 (#94), Kimi K2.7 Code: —

BenchmarkGrok 4Kimi K2.7 Code
LMArena Vision1210—
GeoBench45%—

Multilingual Not comparable

Grok 4: 51.8 (#103), Kimi K2.7 Code: —

BenchmarkGrok 4Kimi K2.7 Code
LMArena Non-English1403—
LMArena Chinese1427—
LMArena French1418—
LMArena German1429—
LMArena Japanese1394—
LMArena Korean1377—
LMArena Russian1410—
LMArena Spanish1420—

Instruction Following Not comparable

Grok 4: 79.2 (#5), Kimi K2.7 Code: —

BenchmarkGrok 4Kimi K2.7 Code
IFEval94.9%—
LMArena Instruction Following1387—

Long Context Not comparable

Grok 4: 63.1 (#4), Kimi K2.7 Code: —

BenchmarkGrok 4Kimi K2.7 Code
Fiction.LiveBench94.4%—
LMArena Longer Query1409—

Writing & Preference Not comparable

Grok 4: 58.5 (#116), Kimi K2.7 Code: —

BenchmarkGrok 4Kimi K2.7 Code
LMArena Text1411—
LMArena Creative Writing1397—
Short-Story Creative Writing76.9%—
WildBench79.7%—
LMArena Multi-Turn1416—

Frequently asked questions

Is Grok 4 better than Kimi K2.7 Code?

Grok 4 is the stronger model overall, scoring 48.1 to 43.3 on the Noometry Index.

Is Grok 4 or Kimi K2.7 Code better for coding?

Grok 4 scores higher on coding benchmarks: 50.3 versus 42.9 in the Noometry coding category.

How many benchmarks do Grok 4 and Kimi K2.7 Code share?

6 benchmarks have published results for both models. Grok 4 has 48 scored results on Noometry and Kimi K2.7 Code has 19.

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