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Kimi K2

open weightsdeprecated by benchmark source
Moonshot AI · released 2025-07-11 · 1 offers

Context 128K tokens

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Composite

1 of 7 inputs6 radar axes: DesignArena's two boards share one

20.8

dominance-adjusted from 28.9: a better-measured model that is at least as good on each of these inputs ranks above it

AA CodingCoding Agent v1.4AA IntelligenceAA AgenticEpoch ECISoftware ECIDesignArenaAA Intelligence: percentile 54

AA Coding Coding Agent v1.4 AA Intelligence 12.7AA Agentic Epoch ECI Software ECI DesignArena —/—

Radar: percentile among all models measured on each input; a gap means not measured.

Benchmark sheet

22 of 140 registered benchmark versions · bars show the percentile among all models measured on each benchmark.

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Agentic

Coding

  • Aider Polyglot6759.1%

    Aider Polyglot published 2026-09-10 · edit format: diff — Evaluates LLMs on 225 Exercism coding exercises across six languages, testing code editing without human intervention.

  • GSO software optimization, Opt@1 (UC Berkeley) vopt1-102334.9%

    GSO software optimization, Opt@1 (UC Berkeley) vopt1-102 · OpenHands — An agent gets a real codebase and a performance test and must make the code as fast as an expert developer's optimization; 102 tasks across 10 codebases and 5 languages.

Instruction-following

  • IFBench (AA single-turn)4241.5%

    IFBench (AA single-turn) published 2026-09-10 · Published board — Tests precise single-turn instructions with deterministic rule checks.

  • LisanBench word chains, v0.2.0 (Lisan al Gaib)52348.7

    LisanBench word chains, v0.2.0 (Lisan al Gaib) v0.2.0 · Published board — A model builds the longest chain of English words it can, each differing from the last by one letter, with no repeats and only dictionary words, from 50 starting words; any broken rule ends the chain.

Knowledge

Long-context

  • AA-LCR v1.14953.0%

    AA-LCR v1.1 v1.1 · Published board — Tests reasoning across multiple long documents with corrected answer keys and grading.

Math

  • AIME 2025 (AA) v20255457.0%

    AIME 2025 (AA) v2025 · Published board — Advanced mathematical problem solving on AIME I and II 2025.

Reasoning

  • SimpleBench3826.3%

    SimpleBench published 2026-09-10 · Published board — A multiple-choice text benchmark of over 200 questions covering spatio-temporal reasoning, social intelligence, and linguistic adversarial robustness, on which a non-specialized human baseline outperforms every tested LLM.

  • AA Intelligence Index5412.7

    AA Intelligence Index published 2026-09-19 · Published board — Artificial Analysis publishes this board without a version number; we keep the date each result was retained.

Safety/Alignment

Science

Tool-use

Uncensored

  • UGI Willingness513.20

    UGI Willingness published 2026-09-10 · Published board — A private-question evaluation of how far a model follows challenging instructions before refusing or deviating.

  • UGI9656.5

    UGI published 2026-09-10 · Published board — A private-question suite combining sensitive-topic knowledge with willingness to follow controversial instructions.

Writing

  • EQ-Bench Creative Writing v3961,663 Elo

    EQ-Bench Creative Writing v3 v3 · Published board — A LLM-judged creative writing benchmark with vocabulary and GPT-slop controls.

  • EQ-Bench Longform Creative Writing v1.118868.1

    EQ-Bench Longform Creative Writing v1.11 · Published board — LLM-judged benchmark in which models plan and write a short story/novella over 8x 1000-word turns, scored 0-100 across 14 rubric dimensions.

  • UGI Writing9652.5

    UGI Writing published 2026-09-10 · Published board — A maintainer-owned writing evaluation considering intelligence, style, repetition and length adherence, informed by human preferences.

Unusual results

3 threshold-crossing signals flagged · 19 eligible benchmark families

How flags are calculated

Heuristic screen, not statistical significance: benchmark families are correlated and source uncertainty is unknown. Peer evidence needs ≥ 20 independently measured matched configurations from ≥ 10 distinct model families. A flag needs a directed population z-score of magnitude ≥ 1.5 and a gap of ≥ 1.5 from the leave-one-benchmark-family-out mean z in the same direction, over ≥ 5 other benchmark families.

Missing coverage · 122 benchmark versions

No result does not mean a zero, or that the model was never tested. Collection failures and disputed versions retain their distinct status.

Token offers by platform · 1 offers (Adjusted $/task)

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OpenRouter (1)

Novita
Kimi K2 — benchmarks & cost | Benchmark Heaven