Noometry

Model comparison

Claude Opus 5 vs Muse Spark

Claude Opus 5 is the stronger model overall, scoring 67.7 to 50.3 on the Noometry Index.

Last verified . 24 shared benchmarks.

Claude Opus 5 Anthropic

67.7

Rank #4 Confirmed

Muse Spark Meta

50.3

Rank #41 Confirmed

Summary

  • They share 24 benchmarks with published results for both. Claude Opus 5 scores higher in 9 categories and Muse Spark in 0 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Claude Opus 5 leads 77.1 to 34.9.
  • The biggest single-benchmark swing is ProofBench: 99% for Claude Opus 5 and 17% for Muse Spark.

Side by side

Claude Opus 5Muse Spark
ProviderAnthropicMeta
Noometry Index67.750.3
Released2026-07-242026-04-08
WeightsProprietaryProprietary
Context window1M—
Max output128K—
Input $ / M tokens$5—
Output $ / M tokens$25—
Results tracked5727

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Category by category

Coding Claude Opus 5 leads

Claude Opus 5: 67.0 (#5), Muse Spark: 45.6 (#65)

BenchmarkClaude Opus 5Muse Spark
SciCode56.4%51.5%
LMArena Coding15331482
DeepSWE73.6%—
FrontierCode53.4%—
CursorBench46.6%—
LMArena WebDev1694—
FrontierSWE52%—
WeirdML91.8%—
ALE-Bench2,165—

Agentic & Tool Use Not comparable

Claude Opus 5: 55.5 (#1), Muse Spark: —

BenchmarkClaude Opus 5Muse Spark
APEX-Agents65.8%—
OSWorld 2.031.4%—
τ²-bench Banking48.7%—
PostTrainBench35%—
BALROG63.4%—
GBAEval79.6%—
GDP.pdf24%—
Vending-Bench 211,182—

Reasoning Claude Opus 5 leads

Claude Opus 5: 77.1 (#3), Muse Spark: 34.9 (#61)

BenchmarkClaude Opus 5Muse Spark
CritPt29.1%11.3%
LMArena Hard Prompts15251475
Epoch Capabilities Index162.67152.09
ARC-AGI-290.4%—
SimpleBench80.6%—
NYT Connections (extended)94.3%—
ARC-AGI-197.5%—
Chess Puzzles42%—
EBR-Bench45.7%—
Mystery Game Puzzles59%—
DTBench97.9%—
LMCA64.5%—
Bench to the Future 30.12—

Math Claude Opus 5 leads

Claude Opus 5: 86.1 (#6), Muse Spark: 46.8 (#57)

BenchmarkClaude Opus 5Muse Spark
OTIS Mock AIME 2024-202598.9%88.9%
ProofBench99%17%
LMArena Math15331455
FrontierMath (Tiers 1-3)85.6%—
FrontierMath Tier 473.2%—
FrontierMath (Feb 2025 set)—39%
FrontierMath Tier 4 (v1)—14.6%

Knowledge Claude Opus 5 leads

Claude Opus 5: 66.8 (#8), Muse Spark: 65.7 (#12)

BenchmarkClaude Opus 5Muse Spark
GPQA Diamond93.9%89.8%
LMArena Expert15581458
Humanity's Last Exam—40.6%
SimpleQA Verified59.9%—

Multimodal Claude Opus 5 leads

Claude Opus 5: 51.1 (#6), Muse Spark: 42.7 (#23)

BenchmarkClaude Opus 5Muse Spark
LMArena Vision13211306
LMArena Document15161444
Blueprint-Bench 230.4%—
Furniture Assembly60.8%—

Multilingual Claude Opus 5 leads

Claude Opus 5: 58.8 (#3), Muse Spark: 56.3 (#23)

BenchmarkClaude Opus 5Muse Spark
LMArena Non-English15001464
LMArena Chinese15751507
LMArena French15221497
LMArena German15221497
LMArena Korean15261457
LMArena Russian15071467
LMArena Spanish15191471
LMArena Japanese1510—

Instruction Following Claude Opus 5 leads

Claude Opus 5: 79.3 (#5), Muse Spark: 76.1 (#47)

BenchmarkClaude Opus 5Muse Spark
LMArena Instruction Following15161443

Long Context Claude Opus 5 leads

Claude Opus 5: 46.5 (#20), Muse Spark: 44.4 (#65)

BenchmarkClaude Opus 5Muse Spark
LMArena Longer Query15161451

Writing & Preference Claude Opus 5 leads

Claude Opus 5: 79.3 (#2), Muse Spark: 66.2 (#37)

BenchmarkClaude Opus 5Muse Spark
LMArena Text15061474
LMArena Creative Writing14911460
LMArena Multi-Turn14961477
EQ-Bench Creative Writing2133—
EQ-Bench 41385—

Frequently asked questions

Is Claude Opus 5 better than Muse Spark?

Claude Opus 5 is the stronger model overall, scoring 67.7 to 50.3 on the Noometry Index.

Is Claude Opus 5 or Muse Spark better for coding?

Claude Opus 5 scores higher on coding benchmarks: 67.0 versus 45.6 in the Noometry coding category.

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

24 benchmarks have published results for both models. Claude Opus 5 has 57 scored results on Noometry and Muse Spark has 27.

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