Noometry

Model comparison

Claude Instant vs Kimi K3

Kimi K3 has enough public results to be ranked (#12); Claude Instant does not yet, so treat this comparison as directional.

Last verified . 2 shared benchmarks.

Claude Instant Anthropic

28.8

Unranked Sparse

Kimi K3 Moonshot AI

59.5

Rank #12 Confirmed

Summary

  • They share 2 benchmarks with published results for both. Claude Instant scores higher in 0 categories and Kimi K3 in 1 category; one gap is clear of the uncertainty.
  • The widest gap is in reasoning, where Kimi K3 leads 63.0 to 18.8.
  • The biggest single-benchmark swing is DTBench: 45.8% for Claude Instant and 91.2% for Kimi K3.
  • Kimi K3 has downloadable open weights; the other is API-only.

Side by side

Claude InstantKimi K3
ProviderAnthropicMoonshot AI
Noometry Index28.859.5
Released2023-08-092026-07-16
WeightsProprietaryOpen
Context window—1.05M
Max output—1.05M
Input $ / M tokens—$3
Output $ / M tokens—$15
Results tracked753

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Category by category

Coding Not comparable

Claude Instant: —, Kimi K3: 60.6 (#8)

BenchmarkClaude InstantKimi K3
DeepSWE—68.5%
FrontierCode—44.2%
LMArena WebDev—1659
FrontierSWE—25.9%
SciCode—59.5%
WeirdML—82.6%
LMArena Coding—1509
ALE-Bench—1,524
HumanEval+50.6%—

Agentic & Tool Use Not comparable

Claude Instant: —, Kimi K3: 41.8 (#19)

BenchmarkClaude InstantKimi K3
APEX-Agents—50.6%
τ²-bench Banking—37.1%
PostTrainBench—32%
GBAEval—48.3%
GDP.pdf—19%
Vending-Bench 2—5,165

Reasoning Kimi K3 leads

Claude Instant: 18.8, Kimi K3: 63.0 (#15)

BenchmarkClaude InstantKimi K3
DTBench45.8%91.2%
Epoch Capabilities Index120.2157.68
ARC-AGI-2—60.4%
SimpleBench—60.7%
NYT Connections (extended)—93.6%
ARC-AGI-1—94.5%
CritPt—23.4%
Chess Puzzles—39%
LMArena Hard Prompts—1495
Mystery Game Puzzles—26%
LMCA—52.7%
Surface Evolver Bench—95%
ForecastBench—61.1

Math Not comparable

Claude Instant: —, Kimi K3: 74.0 (#13)

BenchmarkClaude InstantKimi K3
FrontierMath (Tiers 1-3)—72.2%
FrontierMath Tier 4—39%
MathArena Final-Answer Competitions—87.8%
OTIS Mock AIME 2024-2025—97.2%
ProofBench—87%
LMArena Math—1493
GSM8K86.7%—

Knowledge Not comparable

Claude Instant: —, Kimi K3: 63.2 (#19)

BenchmarkClaude InstantKimi K3
GPQA Diamond—93.1%
SimpleQA Verified—50.6%
LMArena Expert—1520
ARC (AI2) Challenge86.3%—
MMLU73.4%—
TriviaQA78.9%—

Multimodal Not comparable

Claude Instant: —, Kimi K3: 38.4 (#58)

BenchmarkClaude InstantKimi K3
Blueprint-Bench 2—29.5%
Furniture Assembly—34.2%

Multilingual Not comparable

Claude Instant: —, Kimi K3: 56.5 (#20)

BenchmarkClaude InstantKimi K3
LMArena Non-English—1466
LMArena Chinese—1528
LMArena French—1488
LMArena German—1474
LMArena Japanese—1492
LMArena Korean—1465
LMArena Russian—1481
LMArena Spanish—1478

Instruction Following Not comparable

Claude Instant: —, Kimi K3: 77.8 (#13)

BenchmarkClaude InstantKimi K3
LMArena Instruction Following—1481

Long Context Not comparable

Claude Instant: —, Kimi K3: 45.8 (#27)

BenchmarkClaude InstantKimi K3
LMArena Longer Query—1494

Writing & Preference Not comparable

Claude Instant: —, Kimi K3: 76.7 (#4)

BenchmarkClaude InstantKimi K3
LMArena Text—1476
LMArena Creative Writing—1452
EQ-Bench Creative Writing—2082
EQ-Bench 4—1339
LMArena Multi-Turn—1488

Frequently asked questions

Is Claude Instant better than Kimi K3?

Kimi K3 has enough public results to be ranked (#12); Claude Instant does not yet, so treat this comparison as directional.

How many benchmarks do Claude Instant and Kimi K3 share?

2 benchmarks have published results for both models. Claude Instant has 7 scored results on Noometry and Kimi K3 has 53.

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