Noometry

Model comparison

Claude Haiku 4.5 vs Kimi K2 Thinking Turbo

Kimi K2 Thinking Turbo is the stronger model overall, scoring 45.8 to 39.5 on the Noometry Index.

Last verified . 21 shared benchmarks.

Claude Haiku 4.5 Anthropic

39.5

Rank #165 Confirmed

Kimi K2 Thinking Turbo Moonshot AI

45.8

Rank #70 Confirmed

Summary

  • They share 21 benchmarks with published results for both. Claude Haiku 4.5 scores higher in 2 categories and Kimi K2 Thinking Turbo in 6 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Kimi K2 Thinking Turbo leads 32.5 to 15.1.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 66.7% for Claude Haiku 4.5 and 83.1% for Kimi K2 Thinking Turbo.
  • Kimi K2 Thinking Turbo has downloadable open weights; the other is API-only.

Side by side

Claude Haiku 4.5Kimi K2 Thinking Turbo
ProviderAnthropicMoonshot AI
Noometry Index39.545.8
Released2025-10-152025-11-06
WeightsProprietaryOpen
Context window200K—
Max output64K—
Input $ / M tokens$1—
Output $ / M tokens$5—
Results tracked5321

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Category by category

Coding Claude Haiku 4.5 leads

Claude Haiku 4.5: 44.0 (#78), Kimi K2 Thinking Turbo: 38.4 (#178)

BenchmarkClaude Haiku 4.5Kimi K2 Thinking Turbo
LMArena WebDev13301322
LMArena Coding14531454
SWE-bench Verified (bash only)66.6%—
SWE-bench Multilingual64.7%—
SciCode43.3%—
WeirdML45.4%—
ALE-Bench653.48—

Agentic & Tool Use Not comparable

Claude Haiku 4.5: 33.6 (#52), Kimi K2 Thinking Turbo: —

BenchmarkClaude Haiku 4.5Kimi K2 Thinking Turbo
Terminal-Bench35.5%—
Berkeley Function Calling Leaderboard68.7%—
DeepResearch Bench45.5%—
BALROG31.2%—
ExploitBench13.7%—
Vending-Bench 2458.89—

Reasoning Kimi K2 Thinking Turbo leads

Claude Haiku 4.5: 15.1 (#320), Kimi K2 Thinking Turbo: 32.5 (#75)

BenchmarkClaude Haiku 4.5Kimi K2 Thinking Turbo
Chess Puzzles8%20%
LMArena Hard Prompts14201428
ARC-AGI-24%—
NYT Connections (extended)14.3%—
ARC-AGI-147.7%—
CritPt0%—
DTBench73.6%—
LMCA30.9%—
Epoch Capabilities Index142.41—
ForecastBench61.4—

Math Kimi K2 Thinking Turbo leads

Claude Haiku 4.5: 44.9 (#78), Kimi K2 Thinking Turbo: 47.4 (#68)

BenchmarkClaude Haiku 4.5Kimi K2 Thinking Turbo
OTIS Mock AIME 2024-202566.7%83.1%
LMArena Math13961429
Omni-MATH56.1%—
MATH Level 596.4%—
FrontierMath (Feb 2025 set)5.9%—
FrontierMath Tier 4 (v1)2.1%—

Knowledge Kimi K2 Thinking Turbo leads

Claude Haiku 4.5: 37.7 (#153), Kimi K2 Thinking Turbo: 50.9 (#69)

BenchmarkClaude Haiku 4.5Kimi K2 Thinking Turbo
GPQA Diamond71.2%84.2%
LMArena Expert14421439
SimpleQA Verified13.2%—
MMLU-Pro77.7%—
Vectara Hallucination Rate9.8%—
GPQA (HELM)60.5%—

Multimodal Not comparable

Claude Haiku 4.5: 26.8 (#118), Kimi K2 Thinking Turbo: —

BenchmarkClaude Haiku 4.5Kimi K2 Thinking Turbo
Blueprint-Bench 20%—
LMArena Document1420—

Multilingual Kimi K2 Thinking Turbo leads

Claude Haiku 4.5: 49.9 (#129), Kimi K2 Thinking Turbo: 51.4 (#109)

BenchmarkClaude Haiku 4.5Kimi K2 Thinking Turbo
LMArena Non-English13771398
LMArena Chinese14171456
LMArena French14081425
LMArena German13751390
LMArena Japanese13391357
LMArena Korean13471330
LMArena Russian13811391
LMArena Spanish14201406

Instruction Following Kimi K2 Thinking Turbo leads

Claude Haiku 4.5: 71.4 (#149), Kimi K2 Thinking Turbo: 74.0 (#109)

BenchmarkClaude Haiku 4.5Kimi K2 Thinking Turbo
LMArena Instruction Following14141403
IFEval80.1%—

Long Context Too close to call

Claude Haiku 4.5: 43.6 (#92), Kimi K2 Thinking Turbo: 43.2 (#102)

BenchmarkClaude Haiku 4.5Kimi K2 Thinking Turbo
LMArena Longer Query14271415

Writing & Preference Kimi K2 Thinking Turbo leads

Claude Haiku 4.5: 57.9 (#123), Kimi K2 Thinking Turbo: 60.0 (#104)

BenchmarkClaude Haiku 4.5Kimi K2 Thinking Turbo
LMArena Text13961415
LMArena Creative Writing13721374
LMArena Multi-Turn14091414
WildBench83.9%—
EQ-Bench 41064—

Frequently asked questions

Is Claude Haiku 4.5 better than Kimi K2 Thinking Turbo?

Kimi K2 Thinking Turbo is the stronger model overall, scoring 45.8 to 39.5 on the Noometry Index.

Is Claude Haiku 4.5 or Kimi K2 Thinking Turbo better for coding?

Claude Haiku 4.5 scores higher on coding benchmarks: 44.0 versus 38.4 in the Noometry coding category.

How many benchmarks do Claude Haiku 4.5 and Kimi K2 Thinking Turbo share?

21 benchmarks have published results for both models. Claude Haiku 4.5 has 53 scored results on Noometry and Kimi K2 Thinking Turbo has 21.

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