Noometry

Model comparison

Grok 4.3 vs Kimi K2.7 Code

Grok 4.3 and Kimi K2.7 Code score almost the same on the Noometry Index (43.8 vs 43.3), so choose on price, context window or the category you care about most.

Last verified . 13 shared benchmarks.

Grok 4.3 xAI

43.8

Rank #86 Confirmed

Kimi K2.7 Code Moonshot AI

43.3

Rank #94 Confirmed

Summary

  • They share 13 benchmarks with published results for both. Grok 4.3 scores higher in 1 category and Kimi K2.7 Code in 4 categories; 5 gaps are clear of the uncertainty.
  • The widest gap is in math, where Kimi K2.7 Code leads 52.9 to 46.0.
  • The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 42.8% for Grok 4.3 and 54% for Kimi K2.7 Code.
  • Grok 4.3 is cheaper at $1.25 / $2.50 per million input/output tokens, against $0.95 / $4 for Kimi K2.7 Code.
  • Grok 4.3 accepts more context: 1M tokens versus 262K.
  • Kimi K2.7 Code has downloadable open weights; the other is API-only.

Side by side

Grok 4.3Kimi K2.7 Code
ProviderxAIMoonshot AI
Noometry Index43.843.3
Released2026-04-172026-06-12
WeightsProprietaryOpen
Context window1M262K
Max output30K262K
Input $ / M tokens$1.25$0.95
Output $ / M tokens$2.50$4
Results tracked4019

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Category by category

Coding Kimi K2.7 Code leads

Grok 4.3: 41.6 (#121), Kimi K2.7 Code: 42.9 (#95)

BenchmarkGrok 4.3Kimi K2.7 Code
LMArena WebDev13571473
SciCode47.3%47.5%
WeirdML49.9%54.1%
ALE-Bench944.17886.23
DeepSWE—30.5%
FrontierCode—30.1%
LMArena Coding1415—

Agentic & Tool Use Grok 4.3 leads

Grok 4.3: 27.7 (#99), Kimi K2.7 Code: 24.0 (#122)

BenchmarkGrok 4.3Kimi K2.7 Code
Vending-Bench 235.265,083
APEX-Agents—37.6%
GBAEval—0.9%
GDP.pdf8%—
LMArena Search1165—

Reasoning Kimi K2.7 Code leads

Grok 4.3: 35.9 (#68), Kimi K2.7 Code: 39.0 (#61)

BenchmarkGrok 4.3Kimi K2.7 Code
CritPt8%10%
Chess Puzzles25%21%
Epoch Capabilities Index149.16149.97
SimpleBench—57.9%
NYT Connections (extended)55.2%—
LMArena Hard Prompts1396—
DTBench90.7%—
LMCA38.3%—
Surface Evolver Bench—48.8%
ForecastBench60.3—

Math Kimi K2.7 Code leads

Grok 4.3: 46.0 (#74), Kimi K2.7 Code: 52.9 (#48)

BenchmarkGrok 4.3Kimi K2.7 Code
FrontierMath (Tiers 1-3)42.8%54%
FrontierMath Tier 414.6%12.2%
OTIS Mock AIME 2024-202593.3%95.6%
ProofBench11%—
LMArena Math1388—

Knowledge Kimi K2.7 Code leads

Grok 4.3: 52.5 (#62), Kimi K2.7 Code: 53.5 (#57)

BenchmarkGrok 4.3Kimi K2.7 Code
GPQA Diamond88.8%87.9%
SimpleQA Verified33.2%36.5%
LMArena Expert1385—

Multimodal Not comparable

Grok 4.3: 31.6 (#104), Kimi K2.7 Code: —

BenchmarkGrok 4.3Kimi K2.7 Code
LMArena Vision1229—
Blueprint-Bench 20%—

Multilingual Not comparable

Grok 4.3: 50.5 (#120), Kimi K2.7 Code: —

BenchmarkGrok 4.3Kimi K2.7 Code
LMArena Non-English1385—
LMArena Chinese1422—
LMArena French1412—
LMArena German1395—
LMArena Japanese1379—
LMArena Korean1356—
LMArena Russian1399—
LMArena Spanish1398—

Instruction Following Not comparable

Grok 4.3: 72.1 (#140), Kimi K2.7 Code: —

BenchmarkGrok 4.3Kimi K2.7 Code
LMArena Instruction Following1366—

Long Context Not comparable

Grok 4.3: 42.5 (#123), Kimi K2.7 Code: —

BenchmarkGrok 4.3Kimi K2.7 Code
LMArena Longer Query1393—

Writing & Preference Not comparable

Grok 4.3: 58.5 (#118), Kimi K2.7 Code: —

BenchmarkGrok 4.3Kimi K2.7 Code
LMArena Text1397—
LMArena Creative Writing1380—
EQ-Bench 41075—
LMArena Multi-Turn1406—

Frequently asked questions

Is Grok 4.3 better than Kimi K2.7 Code?

Grok 4.3 and Kimi K2.7 Code score almost the same on the Noometry Index (43.8 vs 43.3), so choose on price, context window or the category you care about most.

Which is cheaper, Grok 4.3 or Kimi K2.7 Code?

Grok 4.3 is cheaper. It lists at $1.25 per million input tokens and $2.50 per million output tokens; Kimi K2.7 Code lists at $0.95 and $4.

Is Grok 4.3 or Kimi K2.7 Code better for coding?

Kimi K2.7 Code scores higher on coding benchmarks: 42.9 versus 41.6 in the Noometry coding category.

Which has the bigger context window?

Grok 4.3 does, with 1M tokens against 262K.

How many benchmarks do Grok 4.3 and Kimi K2.7 Code share?

13 benchmarks have published results for both models. Grok 4.3 has 40 scored results on Noometry and Kimi K2.7 Code has 19.

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