Noometry

Model comparison

Kimi K2 Thinking Turbo vs Muse Spark 1.2

Muse Spark 1.2 is the stronger model overall, scoring 49.8 to 45.4 on the Noometry Index.

Last verified . 12 shared benchmarks.

Kimi K2 Thinking Turbo Moonshot AI

45.4

Rank #63 Confirmed

Muse Spark 1.2 Meta

49.8

Rank #44 Confirmed

Summary

  • They share 12 benchmarks with published results for both. Kimi K2 Thinking Turbo scores higher in 1 category and Muse Spark 1.2 in 7 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Muse Spark 1.2 leads 50.4 to 31.4.
  • Kimi K2 Thinking Turbo has downloadable open weights; the other is API-only.

Side by side

Kimi K2 Thinking TurboMuse Spark 1.2
ProviderMoonshot AIMeta
Noometry Index45.449.8
Released2025-11-062026-08-05
WeightsOpenProprietary
Context window—1.05M
Max output—131K
Input $ / M tokens—$1.25
Output $ / M tokens—$4.25
Results tracked2128

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Category by category

Coding Muse Spark 1.2 leads

Kimi K2 Thinking Turbo: 38.1 (#166), Muse Spark 1.2: 48.6 (#49)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.2
LMArena WebDev13221532
LMArena Coding14541497
DeepSWE—54.9%
FrontierSWE—12%
SciCode—56.4%
WeirdML—60.3%

Agentic & Tool Use Not comparable

Kimi K2 Thinking Turbo: —, Muse Spark 1.2: 29.5 (#77)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.2
APEX-Agents—36.4%
GDP.pdf—16%

Reasoning Muse Spark 1.2 leads

Kimi K2 Thinking Turbo: 31.4 (#72), Muse Spark 1.2: 50.4 (#32)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.2
LMArena Hard Prompts14281490
SimpleBench—74.5%
NYT Connections (extended)—79.2%
CritPt—17.7%
Chess Puzzles20%—
DTBench—94.7%
LMCA—48.4%
Epoch Capabilities Index—155.18

Math Kimi K2 Thinking Turbo leads

Kimi K2 Thinking Turbo: 45.5 (#62), Muse Spark 1.2: 43.8 (#68)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.2
OTIS Mock AIME 2024-202583.1%—
ProofBench—43%
LMArena Math1429—

Knowledge Muse Spark 1.2 leads

Kimi K2 Thinking Turbo: 50.9 (#64), Muse Spark 1.2: 53.9 (#49)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.2
LMArena Expert14391485
GPQA Diamond84.2%—
SimpleQA Verified—60.3%

Multimodal Not comparable

Kimi K2 Thinking Turbo: —, Muse Spark 1.2: 42.6 (#24)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.2
LMArena Vision—1304

Multilingual Muse Spark 1.2 leads

Kimi K2 Thinking Turbo: 51.6 (#104), Muse Spark 1.2: 57.4 (#10)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.2
LMArena Non-English13981479
LMArena Chinese14571519
LMArena Russian13901494
LMArena French1425—
LMArena German1390—
LMArena Japanese1356—
LMArena Korean1329—
LMArena Spanish1407—

Instruction Following Muse Spark 1.2 leads

Kimi K2 Thinking Turbo: 74.2 (#103), Muse Spark 1.2: 77.1 (#30)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.2
LMArena Instruction Following14031466

Long Context Muse Spark 1.2 leads

Kimi K2 Thinking Turbo: 43.2 (#99), Muse Spark 1.2: 45.4 (#35)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.2
LMArena Longer Query14151483

Writing & Preference Muse Spark 1.2 leads

Kimi K2 Thinking Turbo: 60.2 (#99), Muse Spark 1.2: 72.6 (#14)

BenchmarkKimi K2 Thinking TurboMuse Spark 1.2
LMArena Text14151486
LMArena Creative Writing13731444
LMArena Multi-Turn14141504
EQ-Bench Creative Writing—1840

Frequently asked questions

Is Kimi K2 Thinking Turbo better than Muse Spark 1.2?

Muse Spark 1.2 is the stronger model overall, scoring 49.8 to 45.4 on the Noometry Index.

Is Kimi K2 Thinking Turbo or Muse Spark 1.2 better for coding?

Muse Spark 1.2 scores higher on coding benchmarks: 48.6 versus 38.1 in the Noometry coding category.

How many benchmarks do Kimi K2 Thinking Turbo and Muse Spark 1.2 share?

12 benchmarks have published results for both models. Kimi K2 Thinking Turbo has 21 scored results on Noometry and Muse Spark 1.2 has 28.

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