Noometry

Model comparison

GPT-5.4 mini vs Kimi K2.7 Code

GPT-5.4 mini is the stronger model overall, scoring 45.0 to 43.3 on the Noometry Index.

Last verified . 13 shared benchmarks.

GPT-5.4 mini OpenAI

45.0

Rank #76 Confirmed

Kimi K2.7 Code Moonshot AI

43.3

Rank #94 Confirmed

Summary

  • They share 13 benchmarks with published results for both. GPT-5.4 mini scores higher in 2 categories and Kimi K2.7 Code in 3 categories; 5 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Kimi K2.7 Code leads 39.0 to 30.4.
  • The biggest single-benchmark swing is SimpleQA Verified: 29.4% for GPT-5.4 mini and 36.5% for Kimi K2.7 Code.
  • Both cost about the same: $0.75 input and $4.50 output per million tokens.
  • GPT-5.4 mini accepts more context: 400K tokens versus 262K.
  • Kimi K2.7 Code has downloadable open weights; the other is API-only.

Side by side

GPT-5.4 miniKimi K2.7 Code
ProviderOpenAIMoonshot AI
Noometry Index45.043.3
Released2026-03-172026-06-12
WeightsProprietaryOpen
Context window400K262K
Max output128K262K
Input $ / M tokens$0.75$0.95
Output $ / M tokens$4.50$4
Results tracked4619

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Category by category

Coding GPT-5.4 mini leads

GPT-5.4 mini: 45.2 (#72), Kimi K2.7 Code: 42.9 (#95)

BenchmarkGPT-5.4 miniKimi K2.7 Code
FrontierCode27%30.1%
LMArena WebDev13971473
SciCode49.9%47.5%
WeirdML60.3%54.1%
ALE-Bench1,189886.23
DeepSWE—30.5%
LMArena Coding1438—

Agentic & Tool Use GPT-5.4 mini leads

GPT-5.4 mini: 29.9 (#81), Kimi K2.7 Code: 24.0 (#122)

BenchmarkGPT-5.4 miniKimi K2.7 Code
APEX-Agents—37.6%
DeepResearch Bench36.3%—
GBAEval—0.9%
Vending-Bench 2—5,083

Reasoning Kimi K2.7 Code leads

GPT-5.4 mini: 30.4 (#85), Kimi K2.7 Code: 39.0 (#61)

BenchmarkGPT-5.4 miniKimi K2.7 Code
CritPt10%10%
Chess Puzzles24%21%
Epoch Capabilities Index148.84149.97
ARC-AGI-218.9%—
SimpleBench—57.9%
Kagi LLM Benchmark37.9%—
NYT Connections (extended)61.8%—
ARC-AGI-163.7%—
Thematic Generalization61.7%—
LMArena Hard Prompts1424—
Mystery Game Puzzles11%—
DTBench80%—
LMCA40.8%—
Surface Evolver Bench—48.8%
ForecastBench57—

Math Kimi K2.7 Code leads

GPT-5.4 mini: 45.5 (#75), Kimi K2.7 Code: 52.9 (#48)

BenchmarkGPT-5.4 miniKimi K2.7 Code
FrontierMath (Tiers 1-3)51.2%54%
FrontierMath Tier 49.8%12.2%
OTIS Mock AIME 2024-202588.9%95.6%
ProofBench21%—
LMArena Math1419—
FrontierMath (Feb 2025 set)28.3%—
FrontierMath Tier 4 (v1)2.1%—

Knowledge Kimi K2.7 Code leads

GPT-5.4 mini: 51.5 (#67), Kimi K2.7 Code: 53.5 (#57)

BenchmarkGPT-5.4 miniKimi K2.7 Code
GPQA Diamond86.9%87.9%
SimpleQA Verified29.4%36.5%
Vectara Hallucination Rate5.5%—
LMArena Expert1435—

Multimodal Not comparable

GPT-5.4 mini: 39.7 (#56), Kimi K2.7 Code: —

BenchmarkGPT-5.4 miniKimi K2.7 Code
LMArena Vision1245—

Multilingual Not comparable

GPT-5.4 mini: 51.9 (#96), Kimi K2.7 Code: —

BenchmarkGPT-5.4 miniKimi K2.7 Code
LMArena Non-English1405—
LMArena Chinese1446—
LMArena French1440—
LMArena German1409—
LMArena Japanese1374—
LMArena Korean1368—
LMArena Russian1417—
LMArena Spanish1405—

Instruction Following Not comparable

GPT-5.4 mini: 74.1 (#102), Kimi K2.7 Code: —

BenchmarkGPT-5.4 miniKimi K2.7 Code
LMArena Instruction Following1405—

Long Context Not comparable

GPT-5.4 mini: 43.0 (#112), Kimi K2.7 Code: —

BenchmarkGPT-5.4 miniKimi K2.7 Code
LMArena Longer Query1407—

Writing & Preference Not comparable

GPT-5.4 mini: 64.0 (#58), Kimi K2.7 Code: —

BenchmarkGPT-5.4 miniKimi K2.7 Code
LMArena Text1412—
LMArena Creative Writing1370—
EQ-Bench Creative Writing1665—
LMArena Multi-Turn1429—

Frequently asked questions

Is GPT-5.4 mini better than Kimi K2.7 Code?

GPT-5.4 mini is the stronger model overall, scoring 45.0 to 43.3 on the Noometry Index.

Which is cheaper, GPT-5.4 mini or Kimi K2.7 Code?

GPT-5.4 mini is cheaper. It lists at $0.75 per million input tokens and $4.50 per million output tokens; Kimi K2.7 Code lists at $0.95 and $4.

Is GPT-5.4 mini or Kimi K2.7 Code better for coding?

GPT-5.4 mini scores higher on coding benchmarks: 45.2 versus 42.9 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 Kimi K2.7 Code share?

13 benchmarks have published results for both models. GPT-5.4 mini has 46 scored results on Noometry and Kimi K2.7 Code has 19.

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