Model comparison
Muse Glimmer vs o3-pro
o3-pro is the stronger model overall, scoring 42.9 to 41.7 on the Noometry Index.
Last verified . 0 shared benchmarks.
MetaSummary
- The widest gap is in long context, where o3-pro leads 72.2 to 42.1.
- Muse Glimmer has downloadable open weights; the other is API-only.
Side by side
| Muse Glimmer | o3-pro | |
|---|---|---|
| Provider | Meta | OpenAI |
| Noometry Index | 41.7 | 42.9 |
| Released | 2026-08-10 | 2025-06-10 |
| Weights | Open | Proprietary |
| Context window | — | 200K |
| Max output | — | 100K |
| Input $ / M tokens | — | $20 |
| Output $ / M tokens | — | $80 |
| Results tracked | 15 | 12 |
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Category by category
Coding o3-pro leads
Muse Glimmer: 40.4 (#142), o3-pro: 55.5 (#24)
| Benchmark | Muse Glimmer | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| LMArena WebDev | 1355 | — |
| SciCode | 44.9% | — |
| WeirdML | — | 58.2% |
| LMArena Coding | 1416 | — |
Reasoning Muse Glimmer leads
Muse Glimmer: 25.7 (#144), o3-pro: 23.8 (#171)
| Benchmark | Muse Glimmer | o3-pro |
|---|---|---|
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| CritPt | 2.6% | — |
| LMArena Hard Prompts | 1396 | — |
| DTBench | — | 86.9% |
| LMCA | — | 38.5% |
| Epoch Capabilities Index | — | 147.42 |
Math Not comparable
Muse Glimmer: 38.8 (#125), o3-pro: —
| Benchmark | Muse Glimmer | o3-pro |
|---|---|---|
| LMArena Math | 1417 | — |
Knowledge Muse Glimmer leads
Muse Glimmer: 38.5 (#143), o3-pro: 29.5 (#238)
| Benchmark | Muse Glimmer | o3-pro |
|---|---|---|
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |
| LMArena Expert | 1386 | — |
Multilingual Not comparable
Muse Glimmer: 50.5 (#122), o3-pro: —
| Benchmark | Muse Glimmer | o3-pro |
|---|---|---|
| LMArena Non-English | 1384 | — |
| LMArena Chinese | 1412 | — |
| LMArena Russian | 1390 | — |
Instruction Following Not comparable
Muse Glimmer: 72.6 (#135), o3-pro: —
| Benchmark | Muse Glimmer | o3-pro |
|---|---|---|
| LMArena Instruction Following | 1375 | — |
Long Context o3-pro leads
Muse Glimmer: 42.1 (#129), o3-pro: 72.2 (#1)
| Benchmark | Muse Glimmer | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1382 | — |
Writing & Preference Too close to call
Muse Glimmer: 57.5 (#126), o3-pro: 57.1 (#133)
| Benchmark | Muse Glimmer | o3-pro |
|---|---|---|
| LMArena Text | 1389 | — |
| LMArena Creative Writing | 1339 | — |
| Short-Story Creative Writing | — | 84.4% |
| LMArena Multi-Turn | 1399 | — |
Frequently asked questions
Is Muse Glimmer better than o3-pro?
o3-pro is the stronger model overall, scoring 42.9 to 41.7 on the Noometry Index.
Is Muse Glimmer or o3-pro better for coding?
o3-pro scores higher on coding benchmarks: 55.5 versus 40.4 in the Noometry coding category.
How many benchmarks do Muse Glimmer and o3-pro share?
0 benchmarks have published results for both models. Muse Glimmer has 15 scored results on Noometry and o3-pro has 12.