Noometry

Model comparison

Kimi K2.6 vs Muse Spark

Muse Spark is the stronger model overall, scoring 50.6 to 47.7 on the Noometry Index.

Last verified . 26 shared benchmarks.

Kimi K2.6 Moonshot AI

47.7

Rank #60 Confirmed

Muse Spark Meta

50.6

Rank #46 Confirmed

Summary

  • They share 26 benchmarks with published results for both. Kimi K2.6 scores higher in 6 categories and Muse Spark in 3 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in multimodal, where Muse Spark leads 43.4 to 31.6.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 96.1% for Kimi K2.6 and 88.9% for Muse Spark.
  • Kimi K2.6 has downloadable open weights; the other is API-only.

Side by side

Kimi K2.6Muse Spark
ProviderMoonshot AIMeta
Noometry Index47.750.6
Released2026-04-202026-04-08
WeightsOpenProprietary
Context window262K—
Max output262K—
Input $ / M tokens$0.95—
Output $ / M tokens$4—
Results tracked5127

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Category by category

Coding Kimi K2.6 leads

Kimi K2.6: 50.7 (#43), Muse Spark: 46.2 (#69)

BenchmarkKimi K2.6Muse Spark
SciCode53.5%51.5%
LMArena Coding14881481
SWE-bench Verified76.7%—
LMArena WebDev1509—
WeirdML55.9%—
ALE-Bench1,093—

Agentic & Tool Use Not comparable

Kimi K2.6: 21.9 (#137), Muse Spark: —

BenchmarkKimi K2.6Muse Spark
OSWorld 2.04.6%—
ExploitBench18.4%—
GBAEval0.9%—
GDP.pdf12%—
Vending-Bench 26,205—

Reasoning Kimi K2.6 leads

Kimi K2.6: 40.5 (#55), Muse Spark: 35.9 (#67)

BenchmarkKimi K2.6Muse Spark
CritPt8%11.3%
LMArena Hard Prompts14701474
Epoch Capabilities Index151.05152.04
NYT Connections (extended)87.2%—
Chess Puzzles26%—
EBR-Bench2.4%—
Mystery Game Puzzles18%—
DTBench90.9%—
LMCA37.3%—

Math Kimi K2.6 leads

Kimi K2.6: 57.0 (#41), Muse Spark: 47.8 (#66)

BenchmarkKimi K2.6Muse Spark
OTIS Mock AIME 2024-202596.1%88.9%
ProofBench16%17%
LMArena Math14751455
FrontierMath (Feb 2025 set)39%39%
FrontierMath Tier 4 (v1)14.6%14.6%
FrontierMath (Tiers 1-3)57.2%—
FrontierMath Tier 425.6%—
MathArena Final-Answer Competitions72.9%—

Knowledge Muse Spark leads

Kimi K2.6: 54.0 (#54), Muse Spark: 65.7 (#13)

BenchmarkKimi K2.6Muse Spark
GPQA Diamond90.8%89.8%
LMArena Expert14911457
Humanity's Last Exam—40.6%
SimpleQA Verified34.9%—
Vectara Hallucination Rate10.8%—

Multimodal Muse Spark leads

Kimi K2.6: 31.6 (#103), Muse Spark: 43.4 (#24)

BenchmarkKimi K2.6Muse Spark
LMArena Vision12831306
LMArena Document14511444
Blueprint-Bench 23.9%—
Furniture Assembly21.7%—

Multilingual Muse Spark leads

Kimi K2.6: 54.9 (#37), Muse Spark: 56.1 (#24)

BenchmarkKimi K2.6Muse Spark
LMArena Non-English14461464
LMArena Chinese15211509
LMArena French14711497
LMArena German14501497
LMArena Korean14271459
LMArena Russian14461466
LMArena Spanish14641472
LMArena Japanese1443—

Instruction Following Too close to call

Kimi K2.6: 76.3 (#43), Muse Spark: 75.9 (#51)

BenchmarkKimi K2.6Muse Spark
LMArena Instruction Following14511442

Long Context Too close to call

Kimi K2.6: 44.9 (#52), Muse Spark: 44.4 (#69)

BenchmarkKimi K2.6Muse Spark
LMArena Longer Query14681451

Writing & Preference Kimi K2.6 leads

Kimi K2.6: 68.5 (#26), Muse Spark: 66.0 (#39)

BenchmarkKimi K2.6Muse Spark
LMArena Text14551474
LMArena Creative Writing14341459
LMArena Multi-Turn14531477
EQ-Bench Creative Writing1725—
EQ-Bench 41202—

Frequently asked questions

Is Kimi K2.6 better than Muse Spark?

Muse Spark is the stronger model overall, scoring 50.6 to 47.7 on the Noometry Index.

Is Kimi K2.6 or Muse Spark better for coding?

Kimi K2.6 scores higher on coding benchmarks: 50.7 versus 46.2 in the Noometry coding category.

How many benchmarks do Kimi K2.6 and Muse Spark share?

26 benchmarks have published results for both models. Kimi K2.6 has 51 scored results on Noometry and Muse Spark has 27.

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