# DeepSeek V3 vs Qwen3.5 Plus

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

- Canonical page: https://benchlm.ai/compare/deepseek-v3-vs-qwen3-5-plus
- Last updated: September 28, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Evidence is too thin for a benchmark verdict: DeepSeek V3 and Qwen3.5 Plus share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- DeepSeek V3 has the lower published output-token price.
- Qwen3.5 Plus has the larger published context window at 1M.

## Model Snapshot

| Property | DeepSeek V3 | Qwen3.5 Plus |
|----------|----------|----------|
| Creator | DeepSeek | Alibaba |
| Type | Open Weight | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 128K | 1M |
| Independent public score (not head-to-head) | 31.91 | 48.92 |
| Benchmarks Covered | 6 | 4 |
| Pricing (input/output) | $0.27 / $1.10 | $0.40 / $2.40 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- DeepSeek V3 public-lane score: 11.9 (Estimated · #113/117)
- Qwen3.5 Plus public-lane score: Coming soon

| Benchmark | DeepSeek V3 | Qwen3.5 Plus | Winner |
|-----------|-----------|-----------|--------|
| JobBench | Coming soon | 18.5% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- DeepSeek V3 public-lane score: 19 (Estimated · #130/142)
- Qwen3.5 Plus public-lane score: Coming soon

| Benchmark | DeepSeek V3 | Qwen3.5 Plus | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench | 37.6% | Coming soon | Coming soon |
| SWE-bench Verified | 42% | Coming soon | Coming soon |
| Vibe Code Bench | Coming soon | 15.74% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- DeepSeek V3 public-lane score: 42.3 (Unranked · 2 rankable rows)
- Qwen3.5 Plus public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- DeepSeek V3 public-lane score: 30.3 (Estimated · #139/168)
- Qwen3.5 Plus public-lane score: Coming soon

| Benchmark | DeepSeek V3 | Qwen3.5 Plus | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 59.1% | Coming soon | Coming soon |
| MMLU-Pro | 75.9% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- DeepSeek V3 public-lane score: 38.2 (#103/124)
- Qwen3.5 Plus public-lane score: Coming soon

| Benchmark | DeepSeek V3 | Qwen3.5 Plus | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 86.1% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- DeepSeek V3 public-lane score: 26 (Unranked · 1 rankable row)
- Qwen3.5 Plus public-lane score: 39.3 (Unranked · 2 rankable rows)

| Benchmark | DeepSeek V3 | Qwen3.5 Plus | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 1.724% | 21.034% | Qwen3.5 Plus |
| FrontierMath v2 (Tier 4) | Coming soon | 2.083% | Coming soon |

## FAQ

### Is there enough evidence to pick between DeepSeek V3 and Qwen3.5 Plus?

Not yet. The models share only 1 sourced benchmark row, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [DeepSeek V3 vs GPT-6 Astra](/compare/deepseek-v3-vs-gpt-6-astra)
- [Qwen3.5 Plus vs GPT-6 Astra](/compare/gpt-6-astra-vs-qwen3-5-plus)
- [DeepSeek V3 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-deepseek-v3)
- [Qwen3.5 Plus vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-qwen3-5-plus)

## Explore More

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