DeepSeek V4.1 Flash vs Muse Spark 1.2
DeepSeek V4.1 Flash 
Muse Spark 1.2 Verdict
- Muse Spark 1.2 (xhigh) leads on quality: 64.1 vs 61.9.
- DeepSeek V4.1 Flash (max) is stronger in agents & tools, coding, composite, long context.
- Muse Spark 1.2 (xhigh) is stronger in knowledge, multimodal, reasoning, human preference.
- DeepSeek V4.1 Flash (max) is 7.6× cheaper ($0.262 vs $2.00 per 1M blended).
| Metric | DeepSeek V4.1 Flash (max) | Muse Spark 1.2 (xhigh) |
|---|---|---|
| BenchLeader Index | 61.9 | 64.1 |
| Agents & tools score | 59.6 | 57.5 |
| Coding score | 68.9 | 57.2 |
| Composite score | 74.5 | 69.9 |
| Knowledge score | 61.7 | 67.9 |
| Long context score | 68.5 | 65.9 |
| Multimodal score | 61.4 | 66.0 |
| Reasoning score | 69.5 | 73.8 |
| Human preference score | – | 70.6 |
| Blended price $/M | $0.262 | $2.00 |
| Output speed | 215 tok/s | 207 tok/s |
| Time to first answer | 10.5 s | 22.3 s |
| Context window | 1M | 1.0M |
| SimpleQA Verified | – | 60.3% |
| SciCode | – | 56.4% |
| WeirdML | – | 60.3% |
| LMArena Text | – | 1500 |
| LMArena Hard Prompts | – | 1513 |
| LMArena Coding | – | 1536 |
| LMArena WebDev | 1614 | 1534 |
| LMArena Vision | – | 1304 |
| LMArena Agent | 4.9 | -1.8 |
| LiveBench | 81.1% | 78.0% |
| LiveBench Reasoning | 86.7% | 90.0% |
| LiveBench Coding | 80.0% | 77.5% |
| LiveBench Agentic Coding | 77.3% | 57.6% |
| LiveBench Mathematics | 93.3% | 91.2% |
| LiveBench Data Analysis | 79.3% | 76.5% |
| LiveBench Language | 81.2% | 78.6% |
| LiveBench Instruction Following | 70.0% | 74.3% |
| AA Intelligence Index | 39.5 | 39.8 |
| AA-LCR | 84.0% | 79.0% |
| MMMU-Pro | 77.0% | – |
| AA-Omniscience | -5.3 | 27.2 |
| GPQA Diamond (AA) | – | 90.4% |
| Humanity's Last Exam (AA) | 39.3% | 45.5% |
| SciCode (AA) | 51.9% | 57.4% |
| MMLU-Pro | – | 88.3% |
| IOI | – | 21.8% |
| LegalBench | – | 85.3% |
| CorpFin | – | 70.9% |
| TaxEval | – | 80.4% |
| Terminal-Bench 2.1 (Vals) | – | 69.7% |
| SWE-bench (Vals) | – | 86.6% |
| Vals Index | – | 57.0 |
| CritPt | 14.3% | 17.7% |
| GDPval (AA) | 56.6% | 51.2% |
| τ²-Bench Banking (AA) | – | 34.9% |
| BioMysteryBench | – | 64.8% |
| Code Migration | – | 29.9% |
| Excel Modeling Benchmark | – | 57.0% |
| Finance Agent v2 | – | 60.6% |
| Harvey's Legal Agent Benchmark | – | 25.4% |
| Legal Research Bench | – | 43.8% |
| MedCode | – | 49.4% |
| MedScribe | – | 90.1% |
| MMMU-Pro (Vals) | – | 86.1% |
| MortgageTax | – | 65.4% |
| Public Benefits Bench | – | 68.5% |
| SAGE | – | 47.7% |
| SkillsBench | – | 53.0% |
| Terminal-Bench 4.0 (Vals) | – | 5.6% |
| Vibe Code Bench v1.1 | – | 79.1% |
| LMArena Creative Writing | – | 1452 |
| LMArena Instruction Following | – | 1480 |
| LMArena Multi-turn | – | 1520 |
| LMArena Longer Queries | – | 1502 |
| DeepSWE | – | 54.9% |
| LMCA | – | 48.4% |
| DTBench | – | 94.7% |
| GDP.pdf | – | 16.0% |
| FrontierSWE | – | 12.0% |
Data as of 2026-09-19. Best configuration of each model; every score links to its source on the model pages.
DeepSeek V4.1 Flash vs Muse Spark 1.2: questions
- Is DeepSeek V4.1 Flash better than Muse Spark 1.2?
- Muse Spark 1.2 (xhigh) leads on quality: 64.1 vs 61.9. The BenchLeader Index combines every independent quality benchmark; Muse Spark 1.2 (xhigh) is ahead overall as of 2026-09-19, but check the category scores for your use.
- Is DeepSeek V4.1 Flash better than Muse Spark 1.2 for coding?
- DeepSeek V4.1 Flash scores higher in coding (69 vs 57 on the category index, where 50 is average).
- Is DeepSeek V4.1 Flash better than Muse Spark 1.2 for agentic tasks?
- DeepSeek V4.1 Flash scores higher in agentic tasks (60 vs 58 on the category index, where 50 is average).
- Which is cheaper, DeepSeek V4.1 Flash or Muse Spark 1.2?
- DeepSeek V4.1 Flash is cheaper: $0.262 against $2.00 per million tokens, blended at three input tokens per output token.
- Which is faster, DeepSeek V4.1 Flash or Muse Spark 1.2?
- DeepSeek V4.1 Flash streams faster: 215 against 207 output tokens per second.
- Which has the larger context window?
- Muse Spark 1.2 accepts more context: 1.0M against 1M tokens.