Noometry

Model comparison

Claude Haiku 4.5 vs Muse Glimmer

Muse Glimmer is the stronger model overall, scoring 41.7 to 39.5 on the Noometry Index.

Last verified . 15 shared benchmarks.

Claude Haiku 4.5 Anthropic

39.5

Rank #165 Confirmed

Muse Glimmer Meta

41.7

Rank #131 Confirmed

Summary

  • They share 15 benchmarks with published results for both. Claude Haiku 4.5 scores higher in 4 categories and Muse Glimmer in 4 categories; 5 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Muse Glimmer leads 25.7 to 15.1.
  • Muse Glimmer has downloadable open weights; the other is API-only.

Side by side

Claude Haiku 4.5Muse Glimmer
ProviderAnthropicMeta
Noometry Index39.541.7
Released2025-10-152026-08-10
WeightsProprietaryOpen
Context window200K—
Max output64K—
Input $ / M tokens$1—
Output $ / M tokens$5—
Results tracked5315

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Category by category

Coding Claude Haiku 4.5 leads

Claude Haiku 4.5: 44.0 (#78), Muse Glimmer: 40.4 (#142)

BenchmarkClaude Haiku 4.5Muse Glimmer
LMArena WebDev13301355
SciCode43.3%44.9%
LMArena Coding14531416
SWE-bench Verified (bash only)66.6%—
SWE-bench Multilingual64.7%—
WeirdML45.4%—
ALE-Bench653.48—

Agentic & Tool Use Not comparable

Claude Haiku 4.5: 33.6 (#52), Muse Glimmer: —

BenchmarkClaude Haiku 4.5Muse Glimmer
Terminal-Bench35.5%—
Berkeley Function Calling Leaderboard68.7%—
DeepResearch Bench45.5%—
BALROG31.2%—
ExploitBench13.7%—
Vending-Bench 2458.89—

Reasoning Muse Glimmer leads

Claude Haiku 4.5: 15.1 (#320), Muse Glimmer: 25.7 (#144)

BenchmarkClaude Haiku 4.5Muse Glimmer
CritPt0%2.6%
LMArena Hard Prompts14201396
ARC-AGI-24%—
NYT Connections (extended)14.3%—
ARC-AGI-147.7%—
Chess Puzzles8%—
DTBench73.6%—
LMCA30.9%—
Epoch Capabilities Index142.41—
ForecastBench61.4—

Math Claude Haiku 4.5 leads

Claude Haiku 4.5: 44.9 (#78), Muse Glimmer: 38.8 (#125)

BenchmarkClaude Haiku 4.5Muse Glimmer
LMArena Math13961417
OTIS Mock AIME 2024-202566.7%—
Omni-MATH56.1%—
MATH Level 596.4%—
FrontierMath (Feb 2025 set)5.9%—
FrontierMath Tier 4 (v1)2.1%—

Knowledge Too close to call

Claude Haiku 4.5: 37.7 (#153), Muse Glimmer: 38.5 (#143)

BenchmarkClaude Haiku 4.5Muse Glimmer
LMArena Expert14421386
GPQA Diamond71.2%—
SimpleQA Verified13.2%—
MMLU-Pro77.7%—
Vectara Hallucination Rate9.8%—
GPQA (HELM)60.5%—

Multimodal Not comparable

Claude Haiku 4.5: 26.8 (#118), Muse Glimmer: —

BenchmarkClaude Haiku 4.5Muse Glimmer
Blueprint-Bench 20%—
LMArena Document1420—

Multilingual Too close to call

Claude Haiku 4.5: 49.9 (#129), Muse Glimmer: 50.5 (#122)

BenchmarkClaude Haiku 4.5Muse Glimmer
LMArena Non-English13771384
LMArena Chinese14171412
LMArena Russian13811390
LMArena French1408—
LMArena German1375—
LMArena Japanese1339—
LMArena Korean1347—
LMArena Spanish1420—

Instruction Following Muse Glimmer leads

Claude Haiku 4.5: 71.4 (#149), Muse Glimmer: 72.6 (#135)

BenchmarkClaude Haiku 4.5Muse Glimmer
LMArena Instruction Following14141375
IFEval80.1%—

Long Context Claude Haiku 4.5 leads

Claude Haiku 4.5: 43.6 (#92), Muse Glimmer: 42.1 (#129)

BenchmarkClaude Haiku 4.5Muse Glimmer
LMArena Longer Query14271382

Writing & Preference Too close to call

Claude Haiku 4.5: 57.9 (#123), Muse Glimmer: 57.5 (#126)

BenchmarkClaude Haiku 4.5Muse Glimmer
LMArena Text13961389
LMArena Creative Writing13721339
LMArena Multi-Turn14091399
WildBench83.9%—
EQ-Bench 41064—

Frequently asked questions

Is Claude Haiku 4.5 better than Muse Glimmer?

Muse Glimmer is the stronger model overall, scoring 41.7 to 39.5 on the Noometry Index.

Is Claude Haiku 4.5 or Muse Glimmer better for coding?

Claude Haiku 4.5 scores higher on coding benchmarks: 44.0 versus 40.4 in the Noometry coding category.

How many benchmarks do Claude Haiku 4.5 and Muse Glimmer share?

15 benchmarks have published results for both models. Claude Haiku 4.5 has 53 scored results on Noometry and Muse Glimmer has 15.

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