Noometry

Model comparison

Claude Sonnet 5 vs Muse Glimmer

Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 41.7 on the Noometry Index.

Last verified . 15 shared benchmarks.

Claude Sonnet 5 Anthropic

54.6

Rank #29 Confirmed

Muse Glimmer Meta

41.7

Rank #131 Confirmed

Summary

  • They share 15 benchmarks with published results for both. Claude Sonnet 5 scores higher in 8 categories and Muse Glimmer in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Sonnet 5 leads 66.2 to 38.8.
  • The biggest single-benchmark swing is CritPt: 16.9% for Claude Sonnet 5 and 2.6% for Muse Glimmer.
  • Muse Glimmer has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 5Muse Glimmer
ProviderAnthropicMeta
Noometry Index54.641.7
Released2026-06-292026-08-10
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$2—
Output $ / M tokens$10—
Results tracked5115

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Category by category

Coding Claude Sonnet 5 leads

Claude Sonnet 5: 55.5 (#26), Muse Glimmer: 40.4 (#142)

BenchmarkClaude Sonnet 5Muse Glimmer
LMArena WebDev15411355
SciCode54.3%44.9%
LMArena Coding14831416
DeepSWE53.8%—
FrontierCode42.7%—
CursorBench34.1%—
GSO37.3%—
WeirdML68.8%—
ALE-Bench1,463—

Agentic & Tool Use Not comparable

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

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

Reasoning Claude Sonnet 5 leads

Claude Sonnet 5: 49.1 (#39), Muse Glimmer: 25.7 (#144)

BenchmarkClaude Sonnet 5Muse Glimmer
CritPt16.9%2.6%
LMArena Hard Prompts14611396
SimpleBench60.6%—
NYT Connections (extended)75.1%—
Chess Puzzles35%—
Mystery Game Puzzles35%—
DTBench92.5%—
LMCA50%—
Surface Evolver Bench60%—
Bench to the Future 30.14—
Epoch Capabilities Index156.21—
ForecastBench61.1—

Math Claude Sonnet 5 leads

Claude Sonnet 5: 66.2 (#27), Muse Glimmer: 38.8 (#125)

BenchmarkClaude Sonnet 5Muse Glimmer
LMArena Math14671417
FrontierMath (Tiers 1-3)65.6%—
FrontierMath Tier 429.3%—
OTIS Mock AIME 2024-202594.7%—
ProofBench77%—

Knowledge Claude Sonnet 5 leads

Claude Sonnet 5: 55.6 (#47), Muse Glimmer: 38.5 (#143)

BenchmarkClaude Sonnet 5Muse Glimmer
LMArena Expert14901386
GPQA Diamond90.5%—
SimpleQA Verified33.7%—

Multimodal Not comparable

Claude Sonnet 5: 42.4 (#31), Muse Glimmer: —

BenchmarkClaude Sonnet 5Muse Glimmer
LMArena Vision1274—
Blueprint-Bench 224.9%—
LMArena Document1466—

Multilingual Claude Sonnet 5 leads

Claude Sonnet 5: 53.8 (#55), Muse Glimmer: 50.5 (#122)

BenchmarkClaude Sonnet 5Muse Glimmer
LMArena Non-English14311384
LMArena Chinese14771412
LMArena Russian14511390
LMArena French1460—
LMArena German1440—
LMArena Japanese1422—
LMArena Korean1411—
LMArena Spanish1437—

Instruction Following Claude Sonnet 5 leads

Claude Sonnet 5: 76.3 (#41), Muse Glimmer: 72.6 (#135)

BenchmarkClaude Sonnet 5Muse Glimmer
LMArena Instruction Following14521375

Long Context Claude Sonnet 5 leads

Claude Sonnet 5: 44.8 (#55), Muse Glimmer: 42.1 (#129)

BenchmarkClaude Sonnet 5Muse Glimmer
LMArena Longer Query14631382

Writing & Preference Claude Sonnet 5 leads

Claude Sonnet 5: 69.2 (#25), Muse Glimmer: 57.5 (#126)

BenchmarkClaude Sonnet 5Muse Glimmer
LMArena Text14421389
LMArena Creative Writing14161339
LMArena Multi-Turn14541399
EQ-Bench Creative Writing1794—
EQ-Bench 41236—

Frequently asked questions

Is Claude Sonnet 5 better than Muse Glimmer?

Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 41.7 on the Noometry Index.

Is Claude Sonnet 5 or Muse Glimmer better for coding?

Claude Sonnet 5 scores higher on coding benchmarks: 55.5 versus 40.4 in the Noometry coding category.

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

15 benchmarks have published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and Muse Glimmer has 15.

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