Model comparison
GPT-5.2 Pro vs Muse Glimmer
GPT-5.2 Pro is the stronger model overall, scoring 52.3 to 41.7 on the Noometry Index.
Last verified . 0 shared benchmarks.
MetaSummary
- The widest gap is in math, where GPT-5.2 Pro leads 65.3 to 38.8.
- Muse Glimmer has downloadable open weights; the other is API-only.
Side by side
| GPT-5.2 Pro | Muse Glimmer | |
|---|---|---|
| Provider | OpenAI | Meta |
| Noometry Index | 52.3 | 41.7 |
| Released | 2025-12-11 | 2026-08-10 |
| Weights | Proprietary | Open |
| Context window | 400K | — |
| Max output | 128K | — |
| Input $ / M tokens | $21 | — |
| Output $ / M tokens | $168 | — |
| Results tracked | 8 | 15 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Not comparable
GPT-5.2 Pro: —, Muse Glimmer: 40.4 (#142)
| Benchmark | GPT-5.2 Pro | Muse Glimmer |
|---|---|---|
| LMArena WebDev | — | 1355 |
| SciCode | — | 44.9% |
| LMArena Coding | — | 1416 |
Reasoning GPT-5.2 Pro leads
GPT-5.2 Pro: 51.5 (#33), Muse Glimmer: 25.7 (#144)
| Benchmark | GPT-5.2 Pro | Muse Glimmer |
|---|---|---|
| ARC-AGI-2 | 54.2% | — |
| SimpleBench | 57.4% | — |
| NYT Connections (extended) | 79.3% | — |
| ARC-AGI-1 | 90.5% | — |
| CritPt | — | 2.6% |
| LMArena Hard Prompts | — | 1396 |
| Epoch Capabilities Index | 155.4 | — |
Math GPT-5.2 Pro leads
GPT-5.2 Pro: 65.3 (#29), Muse Glimmer: 38.8 (#125)
| Benchmark | GPT-5.2 Pro | Muse Glimmer |
|---|---|---|
| FrontierMath (Tiers 1-3) | 74% | — |
| FrontierMath Tier 4 | 46% | — |
| LMArena Math | — | 1417 |
| FrontierMath Tier 4 (v1) | 31.3% | — |
Knowledge Not comparable
GPT-5.2 Pro: —, Muse Glimmer: 38.5 (#143)
| Benchmark | GPT-5.2 Pro | Muse Glimmer |
|---|---|---|
| LMArena Expert | — | 1386 |
Multilingual Not comparable
GPT-5.2 Pro: —, Muse Glimmer: 50.5 (#122)
| Benchmark | GPT-5.2 Pro | Muse Glimmer |
|---|---|---|
| LMArena Non-English | — | 1384 |
| LMArena Chinese | — | 1412 |
| LMArena Russian | — | 1390 |
Instruction Following Not comparable
GPT-5.2 Pro: —, Muse Glimmer: 72.6 (#135)
| Benchmark | GPT-5.2 Pro | Muse Glimmer |
|---|---|---|
| LMArena Instruction Following | — | 1375 |
Long Context Not comparable
GPT-5.2 Pro: —, Muse Glimmer: 42.1 (#129)
| Benchmark | GPT-5.2 Pro | Muse Glimmer |
|---|---|---|
| LMArena Longer Query | — | 1382 |
Writing & Preference Not comparable
GPT-5.2 Pro: —, Muse Glimmer: 57.5 (#126)
| Benchmark | GPT-5.2 Pro | Muse Glimmer |
|---|---|---|
| LMArena Text | — | 1389 |
| LMArena Creative Writing | — | 1339 |
| LMArena Multi-Turn | — | 1399 |
Frequently asked questions
Is GPT-5.2 Pro better than Muse Glimmer?
GPT-5.2 Pro is the stronger model overall, scoring 52.3 to 41.7 on the Noometry Index.
How many benchmarks do GPT-5.2 Pro and Muse Glimmer share?
0 benchmarks have published results for both models. GPT-5.2 Pro has 8 scored results on Noometry and Muse Glimmer has 15.