# DeepSeek V3 vs Qwen3.5 397B

> Side-by-side benchmark comparison for DeepSeek V3 and Qwen3.5 397B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/deepseek-v3-vs-qwen3-5-397b
- Last updated: September 29, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Pick Qwen3.5 397B if you want the stronger benchmark profile. DeepSeek V3 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Qwen3.5 397B leads overall 51 to 31.86.
- The clearest category separation is in mathematics, where the averages are 26 for DeepSeek V3 and 73.5 for Qwen3.5 397B.
- The biggest single benchmark swing is SWE-bench Verified in Coding, with scores of 42% and 76.2%.
- DeepSeek V3 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | DeepSeek V3 | Qwen3.5 397B |
|----------|----------|----------|
| Creator | DeepSeek | Alibaba |
| Type | Open Weight | Open Weight |
| Reasoning | Non-Reasoning | Non-Reasoning |
| Context | 128K | 128K |
| Overall Score | 31.86 | null |
| Benchmarks Covered | 6 | 38 |
| Pricing (input/output) | $0.27 / $1.10 | $0.60 / $3.60 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- DeepSeek V3 public-lane score: 12.1 (Estimated · #113/117)
- Qwen3.5 397B public-lane score: Coming soon

| Benchmark | DeepSeek V3 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | Coming soon | 52.5% | Coming soon |
| BrowseComp | Coming soon | 62% | Coming soon |
| Claw-Eval | Coming soon | 56.8% | Coming soon |
| QwenClawBench | Coming soon | 51.8% | Coming soon |
| τ³-bench results | Coming soon | 68.4% | Coming soon |
| VITA-Bench | Coming soon | 43.7% | Coming soon |
| DeepPlanning | Coming soon | 37.6% | Coming soon |
| Toolathlon | Coming soon | 36.3% | Coming soon |
| MCP Atlas | Coming soon | 46.1% | Coming soon |
| MCP-Tasks | Coming soon | 74.2% | Coming soon |
| WideResearch | Coming soon | 74.0% | Coming soon |
| Gert Labs | Coming soon | 46.76% | Coming soon |
| ResearchClawBench | Coming soon | 14.2% | Coming soon |

### Coding

- Winner: Not comparable
- DeepSeek V3 public-lane score: 18.6 (Estimated · #131/143)
- Qwen3.5 397B public-lane score: Coming soon

| Benchmark | DeepSeek V3 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench | 37.6% | Coming soon | Coming soon |
| SWE-bench Verified | 42% | 76.2% | Qwen3.5 397B |
| LiveCodeBench v6 | Coming soon | 83.6% | Coming soon |
| SWE-bench Pro | Coming soon | 50.9% | Coming soon |

### Reasoning

- Winner: Not comparable
- DeepSeek V3 public-lane score: 42.3 (Unranked · 2 rankable rows)
- Qwen3.5 397B public-lane score: 61 (Unranked · 2 rankable rows)

| Benchmark | DeepSeek V3 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | Coming soon | 63.2% | Coming soon |
| AI-Needle | Coming soon | 68.7% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- DeepSeek V3 public-lane score: Coming soon
- Qwen3.5 397B public-lane score: 63.9 (#28/50)

| Benchmark | DeepSeek V3 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 79% | Coming soon |
| MathVision | Coming soon | 88.6% | Coming soon |
| CharXiv | Coming soon | 80.8% | Coming soon |
| VideoMMMU | Coming soon | 84.7% | Coming soon |
| ScreenSpot Pro | Coming soon | 65.6% | Coming soon |
| V* | Coming soon | 95.8% | Coming soon |

### Knowledge

- Winner: Not comparable
- DeepSeek V3 public-lane score: 30.2 (Estimated · #140/169)
- Qwen3.5 397B public-lane score: Coming soon

| Benchmark | DeepSeek V3 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 59.1% | 88.4% | Qwen3.5 397B |
| MMLU-Pro | 75.9% | 87.8% | Qwen3.5 397B |
| SuperGPQA | Coming soon | 70.4% | Coming soon |
| MMLU-Redux | Coming soon | 94.9% | Coming soon |
| C-Eval | Coming soon | 93% | Coming soon |
| HLE | Coming soon | 28.7% | Coming soon |

### Multilingual

- Winner: Not comparable
- DeepSeek V3 public-lane score: Coming soon
- Qwen3.5 397B public-lane score: 69.7 (#5/12)

| Benchmark | DeepSeek V3 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | Coming soon | 84.7% | Coming soon |
| NOVA-63 | Coming soon | 59.1% | Coming soon |

### Instruction Following

- Winner: Directional only
- DeepSeek V3 public-lane score: 38.2 (#103/124)
- Qwen3.5 397B public-lane score: 0 (#124/124)

| Benchmark | DeepSeek V3 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 86.1% | 92.6% | Qwen3.5 397B |

### Mathematics

- Winner: Not comparable
- DeepSeek V3 public-lane score: 26 (Unranked · 1 rankable row)
- Qwen3.5 397B public-lane score: 73.5 (Unranked · 5 rankable rows)

| Benchmark | DeepSeek V3 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 1.724% | Coming soon | Coming soon |
| AIME26 | Coming soon | 93.3% | Coming soon |
| HMMT Feb 2025 | Coming soon | 94.8% | Coming soon |
| HMMT Nov 2025 | Coming soon | 92.7% | Coming soon |
| HMMT Feb 2026 | Coming soon | 87.9% | Coming soon |
| MMAnswerBench | Coming soon | 80.9% | Coming soon |

## FAQ

### Which is better overall, DeepSeek V3 or Qwen3.5 397B?

Qwen3.5 397B is ahead overall on BenchLM right now.

### Where is the biggest gap between DeepSeek V3 and Qwen3.5 397B?

The widest category gap is in mathematics, where the averages are 26 for DeepSeek V3 and 73.5 for Qwen3.5 397B.

### How many benchmarks does DeepSeek V3 cover on BenchLM?

DeepSeek V3 currently has 6 sourced benchmark scores on BenchLM.

### How many benchmarks does Qwen3.5 397B cover on BenchLM?

Qwen3.5 397B currently has 38 sourced benchmark scores on BenchLM.

## Related Comparisons

- [DeepSeek V3 vs Qwen3.5 397B (Reasoning)](/compare/deepseek-v3-vs-qwen3-5-397b-reasoning)
- [Qwen3.5 397B vs Qwen3.5 397B (Reasoning)](/compare/qwen3-5-397b-vs-qwen3-5-397b-reasoning)
- [DeepSeek V3 vs GPT-6 Astra](/compare/deepseek-v3-vs-gpt-6-astra)
- [Qwen3.5 397B vs GPT-6 Astra](/compare/gpt-6-astra-vs-qwen3-5-397b)

## Explore More

- [DeepSeek V3 profile](/models/deepseek-v3)
- [Qwen3.5 397B profile](/models/qwen3-5-397b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)