# DeepSeek V4 Flash 0731 vs Qwen3.8-Flash-Next

> Side-by-side benchmark comparison for DeepSeek V4 Flash 0731 and Qwen3.8-Flash-Next across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/deepseek-v4-flash-0731-vs-qwen3-8-flash-next
- Last updated: October 10, 2026

- Shared sourced benchmarks: 9
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Qwen3.8-Flash-Next leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Qwen3.8-Flash-Next has the higher overall point estimate 64.23 to 61. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in reasoning, where the averages are 60.8 for DeepSeek V4 Flash 0731 and 80.9 for Qwen3.8-Flash-Next.
- The biggest single benchmark swing is Agents' Last Exam in Agentic, with scores of 25.2% and 51.2%.
- Qwen3.8-Flash-Next is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- DeepSeek V4 Flash 0731 also has the larger context window at 1M.

## Model Snapshot

| Property | DeepSeek V4 Flash 0731 | Qwen3.8-Flash-Next |
|----------|----------|----------|
| Creator | DeepSeek | Alibaba |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 262K |
| Overall Score | null | 64.23 |
| Benchmarks Covered | 41 | 24 |
| Pricing (input/output) | $0.14 / $0.28 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- DeepSeek V4 Flash 0731 public-lane score: Coming soon
- Qwen3.8-Flash-Next public-lane score: 59.5 (Estimated · #24/123)

| Benchmark | DeepSeek V4 Flash 0731 | Qwen3.8-Flash-Next | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 56.9% | Coming soon | Coming soon |
| BrowseComp | 73.2% | Coming soon | Coming soon |
| HLE w/ tools | 45.1% | Coming soon | Coming soon |
| MCP Atlas | 69% | Coming soon | Coming soon |
| Toolathlon | 47.8% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 82.7% | Coming soon | Coming soon |
| CyberGym | 76.7% | Coming soon | Coming soon |
| Toolathlon-Verified | 70.3% | 73.5% | Qwen3.8-Flash-Next |
| Agents' Last Exam | 25.2% | 51.2% | Qwen3.8-Flash-Next |
| AutomationBench | 25.1% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 67.0% | Coming soon | Coming soon |
| CoWorkBench | Coming soon | 73.9% | Coming soon |
| JobBench | Coming soon | 55.7% | Coming soon |
| AndroidWorld | Coming soon | 84.5% | Coming soon |
| OSWorld 2.0 | Coming soon | 19.4% | Coming soon |

### Coding

- Winner: Not comparable
- DeepSeek V4 Flash 0731 public-lane score: Coming soon
- Qwen3.8-Flash-Next public-lane score: 52.4 (Supported · #37/146)

| Benchmark | DeepSeek V4 Flash 0731 | Qwen3.8-Flash-Next | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench Pass@1-COT | 91.6% | Coming soon | Coming soon |
| Codeforces | 3052.0 | Coming soon | Coming soon |
| SWE-bench Verified | 79% | Coming soon | Coming soon |
| SWE-bench Pro | 52.6% | 62.5% | Qwen3.8-Flash-Next |
| SWE Multilingual | 73.3% | 81% | Qwen3.8-Flash-Next |
| Terminal-Bench 2.0 | 56.9% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 82.7% | Coming soon | Coming soon |
| NL2Repo | 54.2% | 48.1% | DeepSeek V4 Flash 0731 |
| DeepSWE | 54.4% | 58.7% | Qwen3.8-Flash-Next |
| DSBench-FullStack | 68.7% | Coming soon | Coming soon |
| DSBench-Hard | 59.6% | Coming soon | Coming soon |
| VulcanBench v3 | 88.4% | Coming soon | Coming soon |
| OpenHarmony Bench | 53.8% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 87.3% | Coming soon | Coming soon |
| SWE-bench (Vals) | 88.8% | Coming soon | Coming soon |
| LiveCodeBench v6 | Coming soon | 91.9% | Coming soon |

### Reasoning

- Winner: Not comparable
- DeepSeek V4 Flash 0731 public-lane score: 60.8 (Unranked · 4 rankable rows)
- Qwen3.8-Flash-Next public-lane score: 80.9 (Unranked · 2 rankable rows)

| Benchmark | DeepSeek V4 Flash 0731 | Qwen3.8-Flash-Next | Winner |
|-----------|-----------|-----------|--------|
| MRCR 1M | 78.7% | Coming soon | Coming soon |
| CorpusQA 1M | 60.5% | Coming soon | Coming soon |
| ARC-AGI-1 | 89.00% | Coming soon | Coming soon |
| ARC-AGI-2 | 61.4% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- DeepSeek V4 Flash 0731 public-lane score: Coming soon
- Qwen3.8-Flash-Next public-lane score: 87.7 (#8/54)

| Benchmark | DeepSeek V4 Flash 0731 | Qwen3.8-Flash-Next | Winner |
|-----------|-----------|-----------|--------|
| Vision2Web | Coming soon | 64.0% | Coming soon |
| ERQA | Coming soon | 72.3% | Coming soon |
| LVBench | Coming soon | 76.6% | Coming soon |
| RealWorldQA | Coming soon | 88.5% | Coming soon |
| MathVision | Coming soon | 90.6% | Coming soon |
| MathVision w/ Python | Coming soon | 95.7% | Coming soon |
| CharXiv w/o tools | Coming soon | 84.6% | Coming soon |
| CharXiv | Coming soon | 90.6% | Coming soon |

### Knowledge

- Winner: Not comparable
- DeepSeek V4 Flash 0731 public-lane score: Coming soon
- Qwen3.8-Flash-Next public-lane score: 59.4 (Supported · #47/177)

| Benchmark | DeepSeek V4 Flash 0731 | Qwen3.8-Flash-Next | Winner |
|-----------|-----------|-----------|--------|
| MMLU-Pro | 86.2% | Coming soon | Coming soon |
| Chinese-SimpleQA | 78.9% | Coming soon | Coming soon |
| GPQA | 88.1% | 91.7% | Qwen3.8-Flash-Next |
| GPQA-D | 88.1% | 91.7% | Qwen3.8-Flash-Next |
| HLE | 34.8% | 35.9% | Qwen3.8-Flash-Next |
| GPQA Diamond (Vals) | 89.9% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 86.2% | Coming soon | Coming soon |
| HLE w/o tools | Coming soon | 35.9% | Coming soon |

### Instruction Following

- Winner: Not comparable
- DeepSeek V4 Flash 0731 public-lane score: Coming soon
- Qwen3.8-Flash-Next public-lane score: 91.2 (#22/127)

| Benchmark | DeepSeek V4 Flash 0731 | Qwen3.8-Flash-Next | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 81.3% | Coming soon |

### Mathematics

- Winner: Not comparable
- DeepSeek V4 Flash 0731 public-lane score: 80.4 (Unranked · 4 rankable rows)
- Qwen3.8-Flash-Next public-lane score: Coming soon

| Benchmark | DeepSeek V4 Flash 0731 | Qwen3.8-Flash-Next | Winner |
|-----------|-----------|-----------|--------|
| HMMT Feb 2026 | 94.8% | Coming soon | Coming soon |
| IMOAnswerBench | 88.4% | Coming soon | Coming soon |
| Apex | 33.0% | Coming soon | Coming soon |
| Apex Shortlist | 85.7% | Coming soon | Coming soon |

## FAQ

### Which is better overall, DeepSeek V4 Flash 0731 or Qwen3.8-Flash-Next?

Qwen3.8-Flash-Next has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between DeepSeek V4 Flash 0731 and Qwen3.8-Flash-Next?

The widest category gap is in reasoning, where the averages are 60.8 for DeepSeek V4 Flash 0731 and 80.9 for Qwen3.8-Flash-Next.

### How many benchmarks does DeepSeek V4 Flash 0731 cover on BenchLM?

DeepSeek V4 Flash 0731 currently has 41 sourced benchmark scores on BenchLM.

### How many benchmarks does Qwen3.8-Flash-Next cover on BenchLM?

Qwen3.8-Flash-Next currently has 24 sourced benchmark scores on BenchLM.

## Related Comparisons

- [DeepSeek V4 Flash 0731 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-deepseek-v4-flash-0731)
- [Qwen3.8-Flash-Next vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-qwen3-8-flash-next)
- [DeepSeek V4 Flash 0731 vs GPT-6 Astra](/compare/deepseek-v4-flash-0731-vs-gpt-6-astra)
- [Qwen3.8-Flash-Next vs GPT-6 Astra](/compare/gpt-6-astra-vs-qwen3-8-flash-next)

## Explore More

- [DeepSeek V4 Flash 0731 profile](/models/deepseek-v4-flash-0731)
- [Qwen3.8-Flash-Next profile](/models/qwen3-8-flash-next)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)