Noometry

Model comparison

Claude Opus 4.1 vs Muse Glimmer

Claude Opus 4.1 and Muse Glimmer score almost the same on the Noometry Index (41.0 vs 41.7), so choose on price, context window or the category you care about most.

Last verified . 13 shared benchmarks.

Claude Opus 4.1 Anthropic

41.0

Rank #142 Confirmed

Muse Glimmer Meta

41.7

Rank #131 Confirmed

Summary

  • They share 13 benchmarks with published results for both. Claude Opus 4.1 scores higher in 7 categories and Muse Glimmer in 1 category; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where Muse Glimmer leads 38.8 to 22.3.
  • Muse Glimmer has downloadable open weights; the other is API-only.

Side by side

Claude Opus 4.1Muse Glimmer
ProviderAnthropicMeta
Noometry Index41.041.7
Released2025-08-052026-08-10
WeightsProprietaryOpen
Context window200K—
Max output32K—
Input $ / M tokens$15—
Output $ / M tokens$75—
Results tracked4815

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Category by category

Coding Claude Opus 4.1 leads

Claude Opus 4.1: 44.4 (#73), Muse Glimmer: 40.4 (#142)

BenchmarkClaude Opus 4.1Muse Glimmer
LMArena WebDev13901355
LMArena Coding14791416
SWE-bench Verified73.3%—
SciCode—44.9%
WeirdML45.9%—
ALE-Bench674.77—
AlgoTune1.34—

Agentic & Tool Use Not comparable

Claude Opus 4.1: 35.0 (#41), Muse Glimmer: —

BenchmarkClaude Opus 4.1Muse Glimmer
Terminal-Bench38%—
GDPval43.6%—
Cybench42%—
DeepResearch Bench48.3%—
LMArena Search1148—
METR Time Horizons66.8%—

Reasoning Claude Opus 4.1 leads

Claude Opus 4.1: 32.2 (#76), Muse Glimmer: 25.7 (#144)

BenchmarkClaude Opus 4.1Muse Glimmer
LMArena Hard Prompts14431396
SimpleBench60%—
CritPt—2.6%
Chess Puzzles7%—
EnigmaEval7.2%—
EBR-Bench7.9%—
Mystery Game Puzzles21%—
DTBench80%—
LMCA37.1%—
Epoch Capabilities Index144.12—
ForecastBench62—

Math Muse Glimmer leads

Claude Opus 4.1: 22.3 (#277), Muse Glimmer: 38.8 (#125)

BenchmarkClaude Opus 4.1Muse Glimmer
LMArena Math14311417
FrontierMath (Tiers 1-3)12.6%—
FrontierMath Tier 42.4%—
OTIS Mock AIME 2024-202568.9%—
FrontierMath (Feb 2025 set)7.2%—
FrontierMath Tier 4 (v1)4.2%—

Knowledge Claude Opus 4.1 leads

Claude Opus 4.1: 42.0 (#101), Muse Glimmer: 38.5 (#143)

BenchmarkClaude Opus 4.1Muse Glimmer
LMArena Expert14391386
GPQA Diamond77.3%—
Humanity's Last Exam11.5%—
Confabulations17.1%—
Vectara Hallucination Rate11.8%—

Multimodal Not comparable

Claude Opus 4.1: 26.8 (#119), Muse Glimmer: —

BenchmarkClaude Opus 4.1Muse Glimmer
VPCT35%—

Multilingual Claude Opus 4.1 leads

Claude Opus 4.1: 52.0 (#95), Muse Glimmer: 50.5 (#122)

BenchmarkClaude Opus 4.1Muse Glimmer
LMArena Non-English14051384
LMArena Chinese14271412
LMArena Russian14221390
LMArena French1431—
LMArena German1413—
LMArena Japanese1378—
LMArena Korean1380—
LMArena Spanish1448—

Instruction Following Claude Opus 4.1 leads

Claude Opus 4.1: 75.6 (#58), Muse Glimmer: 72.6 (#135)

BenchmarkClaude Opus 4.1Muse Glimmer
LMArena Instruction Following14351375

Long Context Claude Opus 4.1 leads

Claude Opus 4.1: 44.5 (#63), Muse Glimmer: 42.1 (#129)

BenchmarkClaude Opus 4.1Muse Glimmer
LMArena Longer Query14551382

Writing & Preference Claude Opus 4.1 leads

Claude Opus 4.1: 62.4 (#74), Muse Glimmer: 57.5 (#126)

BenchmarkClaude Opus 4.1Muse Glimmer
LMArena Text14191389
LMArena Creative Writing14121339
LMArena Multi-Turn14441399
Short-Story Creative Writing84.7%—

Frequently asked questions

Is Claude Opus 4.1 better than Muse Glimmer?

Claude Opus 4.1 and Muse Glimmer score almost the same on the Noometry Index (41.0 vs 41.7), so choose on price, context window or the category you care about most.

Is Claude Opus 4.1 or Muse Glimmer better for coding?

Claude Opus 4.1 scores higher on coding benchmarks: 44.4 versus 40.4 in the Noometry coding category.

How many benchmarks do Claude Opus 4.1 and Muse Glimmer share?

13 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Muse Glimmer has 15.

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