Noometry

Model comparison

Muse Glimmer vs o3

o3 is the stronger model overall, scoring 47.5 to 41.7 on the Noometry Index.

Last verified . 13 shared benchmarks.

Muse Glimmer Meta

41.7

Rank #131 Confirmed

o3 OpenAI

47.5

Rank #61 Confirmed

Summary

  • They share 13 benchmarks with published results for both. Muse Glimmer scores higher in 0 categories and o3 in 8 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where o3 leads 54.6 to 38.5.
  • Muse Glimmer has downloadable open weights; the other is API-only.

Side by side

Muse Glimmero3
ProviderMetaOpenAI
Noometry Index41.747.5
Released2026-08-102025-04-16
WeightsOpenProprietary
Context window—200K
Max output—100K
Input $ / M tokens—$2
Output $ / M tokens—$8
Results tracked1563

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Category by category

Coding o3 leads

Muse Glimmer: 40.4 (#142), o3: 46.8 (#64)

BenchmarkMuse Glimmero3
LMArena Coding14161408
SWE-bench Verified—62.3%
SWE-bench Verified (bash only)—58.4%
Aider Polyglot—81.3%
LMArena WebDev1355—
SciCode44.9%—
GSO—8.8%
WeirdML—52.4%
CadEval—74%
ALE-Bench—933.55

Agentic & Tool Use Not comparable

Muse Glimmer: —, o3: 34.5 (#44)

BenchmarkMuse Glimmero3
Berkeley Function Calling Leaderboard—63%
GDPval—30.8%
DeepResearch Bench—45.2%
OSWorld—23%
LMArena Search—1144
METR Time Horizons—65.4%

Reasoning o3 leads

Muse Glimmer: 25.7 (#144), o3: 32.0 (#78)

BenchmarkMuse Glimmero3
CritPt2.6%1.4%
LMArena Hard Prompts13961402
ARC-AGI-2—6.5%
SimpleBench—53.1%
Kagi LLM Benchmark—67.6%
ARC-AGI-1—60.8%
Chess Puzzles—38%
EnigmaEval—13.1%
Mystery Game Puzzles—29%
DTBench—84.8%
LMCA—39.7%
Epoch Capabilities Index—146.86
ForecastBench—62.5

Math o3 leads

Muse Glimmer: 38.8 (#125), o3: 50.2 (#58)

BenchmarkMuse Glimmero3
LMArena Math14171426
FrontierMath (Tiers 1-3)—33.3%
OTIS Mock AIME 2024-2025—84.4%
Omni-MATH—71.4%
MATH Level 5—97.8%
FrontierMath (Feb 2025 set)—18.7%
FrontierMath Tier 4 (v1)—2.1%

Knowledge o3 leads

Muse Glimmer: 38.5 (#143), o3: 54.6 (#52)

BenchmarkMuse Glimmero3
LMArena Expert13861402
GPQA Diamond—81.8%
Humanity's Last Exam—20.3%
SimpleQA Verified—49.4%
MMLU-Pro—85.9%
Confabulations—14.4%
GPQA (HELM)—75.3%

Multimodal Not comparable

Muse Glimmer: —, o3: 41.4 (#36)

BenchmarkMuse Glimmero3
LMArena Vision—1214
GeoBench—74%
VPCT—52%

Multilingual o3 leads

Muse Glimmer: 50.5 (#122), o3: 51.7 (#105)

BenchmarkMuse Glimmero3
LMArena Non-English13841401
LMArena Chinese14121437
LMArena Russian13901406
LMArena French—1430
LMArena German—1420
LMArena Japanese—1403
LMArena Korean—1370
LMArena Spanish—1395

Instruction Following Too close to call

Muse Glimmer: 72.6 (#135), o3: 72.8 (#127)

BenchmarkMuse Glimmero3
LMArena Instruction Following13751368
IFEval—86.9%

Long Context o3 leads

Muse Glimmer: 42.1 (#129), o3: 53.3 (#6)

BenchmarkMuse Glimmero3
LMArena Longer Query13821372
Fiction.LiveBench—88.9%
CL-bench—17.8%

Writing & Preference o3 leads

Muse Glimmer: 57.5 (#126), o3: 63.5 (#64)

BenchmarkMuse Glimmero3
LMArena Text13891410
LMArena Creative Writing13391359
LMArena Multi-Turn13991405
Short-Story Creative Writing—83.9%
EQ-Bench Creative Writing—1676
WildBench—86.1%

Frequently asked questions

Is Muse Glimmer better than o3?

o3 is the stronger model overall, scoring 47.5 to 41.7 on the Noometry Index.

Is Muse Glimmer or o3 better for coding?

o3 scores higher on coding benchmarks: 46.8 versus 40.4 in the Noometry coding category.

How many benchmarks do Muse Glimmer and o3 share?

13 benchmarks have published results for both models. Muse Glimmer has 15 scored results on Noometry and o3 has 63.

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