Noometry

Model comparison

Claude Sonnet 5 vs Muse Spark

Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 50.6 on the Noometry Index.

Last verified . 24 shared benchmarks.

Claude Sonnet 5 Anthropic

54.6

Rank #29 Confirmed

Muse Spark Meta

50.6

Rank #46 Confirmed

Summary

  • They share 24 benchmarks with published results for both. Claude Sonnet 5 scores higher in 6 categories and Muse Spark in 3 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Sonnet 5 leads 66.2 to 47.8.
  • The biggest single-benchmark swing is ProofBench: 77% for Claude Sonnet 5 and 17% for Muse Spark.

Side by side

Claude Sonnet 5Muse Spark
ProviderAnthropicMeta
Noometry Index54.650.6
Released2026-06-292026-04-08
WeightsProprietaryProprietary
Context window1M—
Max output128K—
Input $ / M tokens$2—
Output $ / M tokens$10—
Results tracked5127

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Category by category

Coding Claude Sonnet 5 leads

Claude Sonnet 5: 55.5 (#26), Muse Spark: 46.2 (#69)

BenchmarkClaude Sonnet 5Muse Spark
SciCode54.3%51.5%
LMArena Coding14831481
DeepSWE53.8%—
FrontierCode42.7%—
CursorBench34.1%—
LMArena WebDev1541—
GSO37.3%—
WeirdML68.8%—
ALE-Bench1,463—

Agentic & Tool Use Not comparable

Claude Sonnet 5: 42.8 (#18), Muse Spark: —

BenchmarkClaude Sonnet 5Muse Spark
APEX-Agents54.5%—
GBAEval65.3%—
LMArena Search1194—
Vending-Bench 26,378—

Reasoning Claude Sonnet 5 leads

Claude Sonnet 5: 49.1 (#39), Muse Spark: 35.9 (#67)

BenchmarkClaude Sonnet 5Muse Spark
CritPt16.9%11.3%
LMArena Hard Prompts14611474
Epoch Capabilities Index156.21152.04
SimpleBench60.6%—
NYT Connections (extended)75.1%—
Chess Puzzles35%—
Mystery Game Puzzles35%—
DTBench92.5%—
LMCA50%—
Surface Evolver Bench60%—
Bench to the Future 30.14—
ForecastBench61.1—

Math Claude Sonnet 5 leads

Claude Sonnet 5: 66.2 (#27), Muse Spark: 47.8 (#66)

BenchmarkClaude Sonnet 5Muse Spark
OTIS Mock AIME 2024-202594.7%88.9%
ProofBench77%17%
LMArena Math14671455
FrontierMath (Tiers 1-3)65.6%—
FrontierMath Tier 429.3%—
FrontierMath (Feb 2025 set)—39%
FrontierMath Tier 4 (v1)—14.6%

Knowledge Muse Spark leads

Claude Sonnet 5: 55.6 (#47), Muse Spark: 65.7 (#13)

BenchmarkClaude Sonnet 5Muse Spark
GPQA Diamond90.5%89.8%
LMArena Expert14901457
Humanity's Last Exam—40.6%
SimpleQA Verified33.7%—

Multimodal Muse Spark leads

Claude Sonnet 5: 42.4 (#31), Muse Spark: 43.4 (#24)

BenchmarkClaude Sonnet 5Muse Spark
LMArena Vision12741306
LMArena Document14661444
Blueprint-Bench 224.9%—

Multilingual Muse Spark leads

Claude Sonnet 5: 53.8 (#55), Muse Spark: 56.1 (#24)

BenchmarkClaude Sonnet 5Muse Spark
LMArena Non-English14311464
LMArena Chinese14771509
LMArena French14601497
LMArena German14401497
LMArena Korean14111459
LMArena Russian14511466
LMArena Spanish14371472
LMArena Japanese1422—

Instruction Following Too close to call

Claude Sonnet 5: 76.3 (#41), Muse Spark: 75.9 (#51)

BenchmarkClaude Sonnet 5Muse Spark
LMArena Instruction Following14521442

Long Context Too close to call

Claude Sonnet 5: 44.8 (#55), Muse Spark: 44.4 (#69)

BenchmarkClaude Sonnet 5Muse Spark
LMArena Longer Query14631451

Writing & Preference Claude Sonnet 5 leads

Claude Sonnet 5: 69.2 (#25), Muse Spark: 66.0 (#39)

BenchmarkClaude Sonnet 5Muse Spark
LMArena Text14421474
LMArena Creative Writing14161459
LMArena Multi-Turn14541477
EQ-Bench Creative Writing1794—
EQ-Bench 41236—

Frequently asked questions

Is Claude Sonnet 5 better than Muse Spark?

Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 50.6 on the Noometry Index.

Is Claude Sonnet 5 or Muse Spark better for coding?

Claude Sonnet 5 scores higher on coding benchmarks: 55.5 versus 46.2 in the Noometry coding category.

How many benchmarks do Claude Sonnet 5 and Muse Spark share?

24 benchmarks have published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and Muse Spark has 27.

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