Noometry

Model comparison

Kimi K2 Thinking Turbo vs Muse Spark 1.1

Muse Spark 1.1 is the stronger model overall, scoring 49.9 to 45.8 on the Noometry Index.

Last verified . 18 shared benchmarks.

Kimi K2 Thinking Turbo Moonshot AI

45.8

Rank #70 Confirmed

Muse Spark 1.1 Meta

49.9

Rank #51 Confirmed

Summary

  • They share 18 benchmarks with published results for both. Kimi K2 Thinking Turbo scores higher in 1 category and Muse Spark 1.1 in 7 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Muse Spark 1.1 leads 47.1 to 32.5.
  • Kimi K2 Thinking Turbo has downloadable open weights; the other is API-only.

Side by side

Kimi K2 Thinking TurboMuse Spark 1.1
ProviderMoonshot AIMeta
Noometry Index45.849.9
Released2025-11-062026-04-08
WeightsOpenProprietary
Context window—1.05M
Max output—131K
Input $ / M tokens—$1.25
Output $ / M tokens—$4.25
Results tracked2137

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Category by category

Coding Muse Spark 1.1 leads

Kimi K2 Thinking Turbo: 38.4 (#178), Muse Spark 1.1: 51.3 (#40)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.1
LMArena WebDev13221542
LMArena Coding14541498
DeepSWE—53.3%
SciCode—58.8%

Agentic & Tool Use Not comparable

Kimi K2 Thinking Turbo: —, Muse Spark 1.1: 30.8 (#73)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.1
APEX-Agents—31.8%
τ²-bench Banking—40.5%
GBAEval—7.9%
GDP.pdf—15%
Vending-Bench 2—6,520

Reasoning Muse Spark 1.1 leads

Kimi K2 Thinking Turbo: 32.5 (#75), Muse Spark 1.1: 47.1 (#44)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.1
LMArena Hard Prompts14281486
NYT Connections (extended)—84.9%
CritPt—15.1%
Chess Puzzles20%—
DTBench—94.4%
LMCA—49.9%
Surface Evolver Bench—52.5%
Epoch Capabilities Index—154.21

Math Kimi K2 Thinking Turbo leads

Kimi K2 Thinking Turbo: 47.4 (#68), Muse Spark 1.1: 45.5 (#76)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.1
LMArena Math14291483
OTIS Mock AIME 2024-202583.1%—
ProofBench—39%

Knowledge Muse Spark 1.1 leads

Kimi K2 Thinking Turbo: 50.9 (#69), Muse Spark 1.1: 53.1 (#59)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.1
LMArena Expert14391478
GPQA Diamond84.2%—
SimpleQA Verified—57.8%

Multimodal Not comparable

Kimi K2 Thinking Turbo: —, Muse Spark 1.1: 42.6 (#29)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.1
LMArena Vision—1293
LMArena Document—1465

Multilingual Muse Spark 1.1 leads

Kimi K2 Thinking Turbo: 51.4 (#109), Muse Spark 1.1: 56.7 (#17)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.1
LMArena Non-English13981472
LMArena Chinese14561518
LMArena French14251494
LMArena German13901466
LMArena Japanese13571451
LMArena Korean13301458
LMArena Russian13911483
LMArena Spanish14061464

Instruction Following Muse Spark 1.1 leads

Kimi K2 Thinking Turbo: 74.0 (#109), Muse Spark 1.1: 76.5 (#39)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.1
LMArena Instruction Following14031457

Long Context Muse Spark 1.1 leads

Kimi K2 Thinking Turbo: 43.2 (#102), Muse Spark 1.1: 44.8 (#58)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.1
LMArena Longer Query14151462

Writing & Preference Muse Spark 1.1 leads

Kimi K2 Thinking Turbo: 60.0 (#104), Muse Spark 1.1: 73.4 (#11)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.1
LMArena Text14151479
LMArena Creative Writing13741437
LMArena Multi-Turn14141485
EQ-Bench Creative Writing—1927
EQ-Bench 4—1260

Frequently asked questions

Is Kimi K2 Thinking Turbo better than Muse Spark 1.1?

Muse Spark 1.1 is the stronger model overall, scoring 49.9 to 45.8 on the Noometry Index.

Is Kimi K2 Thinking Turbo or Muse Spark 1.1 better for coding?

Muse Spark 1.1 scores higher on coding benchmarks: 51.3 versus 38.4 in the Noometry coding category.

How many benchmarks do Kimi K2 Thinking Turbo and Muse Spark 1.1 share?

18 benchmarks have published results for both models. Kimi K2 Thinking Turbo has 21 scored results on Noometry and Muse Spark 1.1 has 37.

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