Noometry

Model comparison

Claude Sonnet 5 vs Kimi K2.7 Code

Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 43.3 on the Noometry Index. Kimi K2.7 Code costs 2.3× less per token, which makes it the better buy when Claude Sonnet 5's lead doesn't matter for your workload.

Last verified . 19 shared benchmarks.

Claude Sonnet 5 Anthropic

54.6

Rank #29 Confirmed

Kimi K2.7 Code Moonshot AI

43.3

Rank #94 Confirmed

Summary

  • They share 19 benchmarks with published results for both. Claude Sonnet 5 scores higher in 5 categories and Kimi K2.7 Code in 0 categories; 5 gaps are clear of the uncertainty.
  • The widest gap is in agentic & tool use, where Claude Sonnet 5 leads 42.8 to 24.0.
  • The biggest single-benchmark swing is GBAEval: 65.3% for Claude Sonnet 5 and 0.9% for Kimi K2.7 Code.
  • Kimi K2.7 Code is cheaper at $0.95 / $4 per million input/output tokens, against $2 / $10 for Claude Sonnet 5.
  • Claude Sonnet 5 accepts more context: 1M tokens versus 262K.
  • Kimi K2.7 Code has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 5Kimi K2.7 Code
ProviderAnthropicMoonshot AI
Noometry Index54.643.3
Released2026-06-292026-06-12
WeightsProprietaryOpen
Context window1M262K
Max output128K262K
Input $ / M tokens$2$0.95
Output $ / M tokens$10$4
Results tracked5119

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Category by category

Coding Claude Sonnet 5 leads

Claude Sonnet 5: 55.5 (#26), Kimi K2.7 Code: 42.9 (#95)

BenchmarkClaude Sonnet 5Kimi K2.7 Code
DeepSWE53.8%30.5%
FrontierCode42.7%30.1%
LMArena WebDev15411473
SciCode54.3%47.5%
WeirdML68.8%54.1%
ALE-Bench1,463886.23
CursorBench34.1%—
GSO37.3%—
LMArena Coding1483—

Agentic & Tool Use Claude Sonnet 5 leads

Claude Sonnet 5: 42.8 (#18), Kimi K2.7 Code: 24.0 (#122)

BenchmarkClaude Sonnet 5Kimi K2.7 Code
APEX-Agents54.5%37.6%
GBAEval65.3%0.9%
Vending-Bench 26,3785,083
LMArena Search1194—

Reasoning Claude Sonnet 5 leads

Claude Sonnet 5: 49.1 (#39), Kimi K2.7 Code: 39.0 (#61)

BenchmarkClaude Sonnet 5Kimi K2.7 Code
SimpleBench60.6%57.9%
CritPt16.9%10%
Chess Puzzles35%21%
Surface Evolver Bench60%48.8%
Epoch Capabilities Index156.21149.97
NYT Connections (extended)75.1%—
LMArena Hard Prompts1461—
Mystery Game Puzzles35%—
DTBench92.5%—
LMCA50%—
Bench to the Future 30.14—
ForecastBench61.1—

Math Claude Sonnet 5 leads

Claude Sonnet 5: 66.2 (#27), Kimi K2.7 Code: 52.9 (#48)

BenchmarkClaude Sonnet 5Kimi K2.7 Code
FrontierMath (Tiers 1-3)65.6%54%
FrontierMath Tier 429.3%12.2%
OTIS Mock AIME 2024-202594.7%95.6%
ProofBench77%—
LMArena Math1467—

Knowledge Claude Sonnet 5 leads

Claude Sonnet 5: 55.6 (#47), Kimi K2.7 Code: 53.5 (#57)

BenchmarkClaude Sonnet 5Kimi K2.7 Code
GPQA Diamond90.5%87.9%
SimpleQA Verified33.7%36.5%
LMArena Expert1490—

Multimodal Not comparable

Claude Sonnet 5: 42.4 (#31), Kimi K2.7 Code: —

BenchmarkClaude Sonnet 5Kimi K2.7 Code
LMArena Vision1274—
Blueprint-Bench 224.9%—
LMArena Document1466—

Multilingual Not comparable

Claude Sonnet 5: 53.8 (#55), Kimi K2.7 Code: —

BenchmarkClaude Sonnet 5Kimi K2.7 Code
LMArena Non-English1431—
LMArena Chinese1477—
LMArena French1460—
LMArena German1440—
LMArena Japanese1422—
LMArena Korean1411—
LMArena Russian1451—
LMArena Spanish1437—

Instruction Following Not comparable

Claude Sonnet 5: 76.3 (#41), Kimi K2.7 Code: —

BenchmarkClaude Sonnet 5Kimi K2.7 Code
LMArena Instruction Following1452—

Long Context Not comparable

Claude Sonnet 5: 44.8 (#55), Kimi K2.7 Code: —

BenchmarkClaude Sonnet 5Kimi K2.7 Code
LMArena Longer Query1463—

Writing & Preference Not comparable

Claude Sonnet 5: 69.2 (#25), Kimi K2.7 Code: —

BenchmarkClaude Sonnet 5Kimi K2.7 Code
LMArena Text1442—
LMArena Creative Writing1416—
EQ-Bench Creative Writing1794—
EQ-Bench 41236—
LMArena Multi-Turn1454—

Frequently asked questions

Is Claude Sonnet 5 better than Kimi K2.7 Code?

Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 43.3 on the Noometry Index. Kimi K2.7 Code costs 2.3× less per token, which makes it the better buy when Claude Sonnet 5's lead doesn't matter for your workload.

Which is cheaper, Claude Sonnet 5 or Kimi K2.7 Code?

Kimi K2.7 Code is cheaper. It lists at $0.95 per million input tokens and $4 per million output tokens; Claude Sonnet 5 lists at $2 and $10.

Is Claude Sonnet 5 or Kimi K2.7 Code better for coding?

Claude Sonnet 5 scores higher on coding benchmarks: 55.5 versus 42.9 in the Noometry coding category.

Which has the bigger context window?

Claude Sonnet 5 does, with 1M tokens against 262K.

How many benchmarks do Claude Sonnet 5 and Kimi K2.7 Code share?

19 benchmarks have published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and Kimi K2.7 Code has 19.

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