Model comparison
DeepSeek V4.1 Flash vs Muse Glimmer
DeepSeek V4.1 Flash is the stronger model overall, scoring 52.8 to 41.7 on the Noometry Index.
Last verified . 15 shared benchmarks.
DeepSeek
MetaSummary
- They share 15 benchmarks with published results for both. DeepSeek V4.1 Flash scores higher in 8 categories and Muse Glimmer in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where DeepSeek V4.1 Flash leads 66.7 to 38.8.
- The biggest single-benchmark swing is CritPt: 14.3% for DeepSeek V4.1 Flash and 2.6% for Muse Glimmer.
Side by side
| DeepSeek V4.1 Flash | Muse Glimmer | |
|---|---|---|
| Provider | DeepSeek | Meta |
| Noometry Index | 52.8 | 41.7 |
| Released | 2026-09-09 | 2026-08-10 |
| Weights | Open | Open |
| Context window | 1M | — |
| Max output | 393K | — |
| Input $ / M tokens | $0.15 | — |
| Output $ / M tokens | $0.60 | — |
| Results tracked | 37 | 15 |
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Category by category
Coding DeepSeek V4.1 Flash leads
DeepSeek V4.1 Flash: 52.9 (#32), Muse Glimmer: 40.4 (#142)
| Benchmark | DeepSeek V4.1 Flash | Muse Glimmer |
|---|---|---|
| LMArena WebDev | 1619 | 1355 |
| SciCode | 51.9% | 44.9% |
| LMArena Coding | 1506 | 1416 |
| ALE-Bench | 1,092 | — |
Agentic & Tool Use Not comparable
DeepSeek V4.1 Flash: 31.2 (#69), Muse Glimmer: —
| Benchmark | DeepSeek V4.1 Flash | Muse Glimmer |
|---|---|---|
| APEX-Agents | 39.5% | — |
| GDP.pdf | 19.8% | — |
Reasoning DeepSeek V4.1 Flash leads
DeepSeek V4.1 Flash: 50.2 (#36), Muse Glimmer: 25.7 (#144)
| Benchmark | DeepSeek V4.1 Flash | Muse Glimmer |
|---|---|---|
| CritPt | 14.3% | 2.6% |
| LMArena Hard Prompts | 1483 | 1396 |
| NYT Connections (extended) | 89.6% | — |
| Mystery Game Puzzles | 43% | — |
| DTBench | 89.9% | — |
| LMCA | 47% | — |
| Surface Evolver Bench | 46.3% | — |
| Epoch Capabilities Index | 154.9 | — |
Math DeepSeek V4.1 Flash leads
DeepSeek V4.1 Flash: 66.7 (#25), Muse Glimmer: 38.8 (#125)
| Benchmark | DeepSeek V4.1 Flash | Muse Glimmer |
|---|---|---|
| LMArena Math | 1477 | 1417 |
| FrontierMath (Tiers 1-3) | 67.4% | — |
| FrontierMath Tier 4 | 26.8% | — |
| OTIS Mock AIME 2024-2025 | 98.3% | — |
| ProofBench | 54% | — |
Knowledge DeepSeek V4.1 Flash leads
DeepSeek V4.1 Flash: 57.9 (#38), Muse Glimmer: 38.5 (#143)
| Benchmark | DeepSeek V4.1 Flash | Muse Glimmer |
|---|---|---|
| LMArena Expert | 1506 | 1386 |
| GPQA Diamond | 89.8% | — |
Multimodal Not comparable
DeepSeek V4.1 Flash: 39.1 (#61), Muse Glimmer: —
| Benchmark | DeepSeek V4.1 Flash | Muse Glimmer |
|---|---|---|
| LMArena Vision | 1277 | — |
| Furniture Assembly | 34.2% | — |
Multilingual DeepSeek V4.1 Flash leads
DeepSeek V4.1 Flash: 55.0 (#35), Muse Glimmer: 50.5 (#122)
| Benchmark | DeepSeek V4.1 Flash | Muse Glimmer |
|---|---|---|
| LMArena Non-English | 1448 | 1384 |
| LMArena Chinese | 1497 | 1412 |
| LMArena Russian | 1471 | 1390 |
| LMArena French | 1452 | — |
| LMArena German | 1484 | — |
| LMArena Japanese | 1412 | — |
| LMArena Korean | 1452 | — |
| LMArena Spanish | 1459 | — |
Instruction Following DeepSeek V4.1 Flash leads
DeepSeek V4.1 Flash: 77.3 (#26), Muse Glimmer: 72.6 (#135)
| Benchmark | DeepSeek V4.1 Flash | Muse Glimmer |
|---|---|---|
| LMArena Instruction Following | 1474 | 1375 |
Long Context DeepSeek V4.1 Flash leads
DeepSeek V4.1 Flash: 45.2 (#47), Muse Glimmer: 42.1 (#129)
| Benchmark | DeepSeek V4.1 Flash | Muse Glimmer |
|---|---|---|
| LMArena Longer Query | 1475 | 1382 |
Writing & Preference DeepSeek V4.1 Flash leads
DeepSeek V4.1 Flash: 65.4 (#48), Muse Glimmer: 57.5 (#126)
| Benchmark | DeepSeek V4.1 Flash | Muse Glimmer |
|---|---|---|
| LMArena Text | 1462 | 1389 |
| LMArena Creative Writing | 1435 | 1339 |
| LMArena Multi-Turn | 1457 | 1399 |
| EQ-Bench Creative Writing | 1540 | — |
Frequently asked questions
Is DeepSeek V4.1 Flash better than Muse Glimmer?
DeepSeek V4.1 Flash is the stronger model overall, scoring 52.8 to 41.7 on the Noometry Index.
Is DeepSeek V4.1 Flash or Muse Glimmer better for coding?
DeepSeek V4.1 Flash scores higher on coding benchmarks: 52.9 versus 40.4 in the Noometry coding category.
How many benchmarks do DeepSeek V4.1 Flash and Muse Glimmer share?
15 benchmarks have published results for both models. DeepSeek V4.1 Flash has 37 scored results on Noometry and Muse Glimmer has 15.