DeepSeek V4.1 Flash vs Qwen3.8-Flash-Next
DeepSeek V4.1 Flash 
Qwen3.8-Flash-Next Verdict
- DeepSeek V4.1 Flash (max) and Qwen3.8-Flash-Next are level on quality (61.9 vs 61.6).
- DeepSeek V4.1 Flash (max) is stronger in composite, knowledge, long context, reasoning.
- Qwen3.8-Flash-Next is stronger in agents & tools, coding, multimodal.
- They cost about the same ($0.230 per 1M blended).
- DeepSeek V4.1 Flash (max) streams 3.9× faster (215 vs 55 tokens per second).
| Metric | DeepSeek V4.1 Flash (max) | Qwen3.8-Flash-Next |
|---|---|---|
| BenchLeader Index | 61.9 | 61.6 |
| Agents & tools score | 59.6 | 65.8 |
| Coding score | 68.9 | 71.2 |
| Composite score | 74.5 | 67.4 |
| Knowledge score | 61.7 | 59.6 |
| Long context score | 68.5 | 66.3 |
| Multimodal score | 61.4 | 64.3 |
| Reasoning score | 69.5 | 63.4 |
| Blended price $/M | $0.262 | $0.230 |
| Output speed | 215 tok/s | 55 tok/s |
| Time to first answer | 10.5 s | 39.0 s |
| Context window | 1M | 256k |
| LMArena WebDev | 1614 | 1635 |
| LMArena Agent | 4.9 | -0.1 |
| LiveBench | 81.1% | 76.2% |
| LiveBench Reasoning | 86.7% | 87.4% |
| LiveBench Coding | 80.0% | 72.5% |
| LiveBench Agentic Coding | 77.3% | 61.6% |
| LiveBench Mathematics | 93.3% | 85.8% |
| LiveBench Data Analysis | 79.3% | 74.2% |
| LiveBench Language | 81.2% | 74.6% |
| LiveBench Instruction Following | 70.0% | 77.1% |
| AA Intelligence Index | 39.5 | 39.9 |
| AA-LCR | 84.0% | 79.7% |
| MMMU-Pro | 77.0% | 79.8% |
| AA-Omniscience | -5.3 | -9.7 |
| GPQA Diamond (AA) | – | 92.3% |
| Humanity's Last Exam (AA) | 39.3% | 38.0% |
| SciCode (AA) | 51.9% | 50.6% |
| CritPt | 14.3% | 11.1% |
| GDPval (AA) | 56.6% | 57.4% |
| τ²-Bench Banking (AA) | – | 45.4% |
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 Qwen3.8-Flash-Next: questions
- Is DeepSeek V4.1 Flash better than Qwen3.8-Flash-Next?
- DeepSeek V4.1 Flash (max) and Qwen3.8-Flash-Next are level on quality (61.9 vs 61.6). The BenchLeader Index combines every independent quality benchmark; DeepSeek V4.1 Flash (max) is ahead overall as of 2026-09-19, but check the category scores for your use.
- Is DeepSeek V4.1 Flash better than Qwen3.8-Flash-Next for coding?
- Qwen3.8-Flash-Next scores higher in coding (71 vs 69 on the category index, where 50 is average).
- Is DeepSeek V4.1 Flash better than Qwen3.8-Flash-Next for agentic tasks?
- Qwen3.8-Flash-Next scores higher in agentic tasks (66 vs 60 on the category index, where 50 is average).
- Which is cheaper, DeepSeek V4.1 Flash or Qwen3.8-Flash-Next?
- Qwen3.8-Flash-Next is cheaper: $0.230 against $0.262 per million tokens, blended at three input tokens per output token.
- Which is faster, DeepSeek V4.1 Flash or Qwen3.8-Flash-Next?
- DeepSeek V4.1 Flash streams faster: 215 against 55 output tokens per second.
- Which has the larger context window?
- DeepSeek V4.1 Flash accepts more context: 1M against 256k tokens.