Noometry

Model comparison

Claude Opus 4 vs Muse Spark

Muse Spark is the stronger model overall, scoring 50.6 to 43.1 on the Noometry Index.

Last verified . 24 shared benchmarks.

Claude Opus 4 Anthropic

43.1

Rank #100 Confirmed

Muse Spark Meta

50.6

Rank #46 Confirmed

Summary

  • They share 24 benchmarks with published results for both. Claude Opus 4 scores higher in 2 categories and Muse Spark in 7 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where Muse Spark leads 65.7 to 44.0.
  • The biggest single-benchmark swing is Humanity's Last Exam: 10.7% for Claude Opus 4 and 40.6% for Muse Spark.

Side by side

Claude Opus 4Muse Spark
ProviderAnthropicMeta
Noometry Index43.150.6
Released2025-05-222026-04-08
WeightsProprietaryProprietary
Context window200K—
Max output32K—
Input $ / M tokens$15—
Output $ / M tokens$75—
Results tracked5627

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Category by category

Coding Claude Opus 4 leads

Claude Opus 4: 47.2 (#62), Muse Spark: 46.2 (#69)

BenchmarkClaude Opus 4Muse Spark
LMArena Coding14421481
SWE-bench Verified70.7%—
SWE-bench Verified (bash only)67.6%—
Aider Polyglot72%—
SciCode—51.5%
GSO6.9%—
WeirdML43.7%—
AlgoTune1.33—

Agentic & Tool Use Not comparable

Claude Opus 4: 34.8 (#42), Muse Spark: —

BenchmarkClaude Opus 4Muse Spark
Cybench38%—
DeepResearch Bench46.8%—
LMArena Search1127—
METR Time Horizons63.9%—

Reasoning Muse Spark leads

Claude Opus 4: 27.3 (#121), Muse Spark: 35.9 (#67)

BenchmarkClaude Opus 4Muse Spark
CritPt0.3%11.3%
LMArena Hard Prompts13991474
Epoch Capabilities Index142.67152.04
ARC-AGI-28.6%—
SimpleBench58.8%—
Kagi LLM Benchmark74.3%—
ARC-AGI-135.7%—
EnigmaEval5.6%—
DTBench81.6%—
LMCA37.4%—
ForecastBench61.1—

Math Muse Spark leads

Claude Opus 4: 42.0 (#86), Muse Spark: 47.8 (#66)

BenchmarkClaude Opus 4Muse Spark
OTIS Mock AIME 2024-202564.4%88.9%
LMArena Math13901455
FrontierMath (Feb 2025 set)4.5%39%
FrontierMath Tier 4 (v1)4.2%14.6%
ProofBench—17%
Omni-MATH61.6%—
MATH Level 585%—

Knowledge Muse Spark leads

Claude Opus 4: 44.0 (#88), Muse Spark: 65.7 (#13)

BenchmarkClaude Opus 4Muse Spark
GPQA Diamond76.3%89.8%
Humanity's Last Exam10.7%40.6%
LMArena Expert13861457
MMLU-Pro87.5%—
Confabulations15.9%—
Vectara Hallucination Rate12%—
GPQA (HELM)70.8%—

Multimodal Muse Spark leads

Claude Opus 4: 31.5 (#106), Muse Spark: 43.4 (#24)

BenchmarkClaude Opus 4Muse Spark
LMArena Vision11921306
GeoBench49%—
VPCT38%—
LMArena Document—1444

Multilingual Muse Spark leads

Claude Opus 4: 48.8 (#138), Muse Spark: 56.1 (#24)

BenchmarkClaude Opus 4Muse Spark
LMArena Non-English13621464
LMArena Chinese13861509
LMArena French13721497
LMArena German13911497
LMArena Korean13211459
LMArena Russian13921466
LMArena Spanish13891472
LMArena Japanese1331—

Instruction Following Claude Opus 4 leads

Claude Opus 4: 77.1 (#28), Muse Spark: 75.9 (#51)

BenchmarkClaude Opus 4Muse Spark
LMArena Instruction Following14061442
IFEval91.8%—

Long Context Muse Spark leads

Claude Opus 4: 39.6 (#172), Muse Spark: 44.4 (#69)

BenchmarkClaude Opus 4Muse Spark
LMArena Longer Query14221451
Fiction.LiveBench61.1%—

Writing & Preference Muse Spark leads

Claude Opus 4: 61.2 (#89), Muse Spark: 66.0 (#39)

BenchmarkClaude Opus 4Muse Spark
LMArena Text13771474
LMArena Creative Writing13871459
LMArena Multi-Turn13961477
Short-Story Creative Writing83.6%—
EQ-Bench Creative Writing1580—
WildBench85.2%—

Frequently asked questions

Is Claude Opus 4 better than Muse Spark?

Muse Spark is the stronger model overall, scoring 50.6 to 43.1 on the Noometry Index.

Is Claude Opus 4 or Muse Spark better for coding?

Claude Opus 4 scores higher on coding benchmarks: 47.2 versus 46.2 in the Noometry coding category.

How many benchmarks do Claude Opus 4 and Muse Spark share?

24 benchmarks have published results for both models. Claude Opus 4 has 56 scored results on Noometry and Muse Spark has 27.

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