# DeepSeek V4 Flash vs Qwen Plus

> DeepSeek V4 Flash is the stronger model overall, scoring 53.6 to 37.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/deepseek-v4-flash-vs-qwen-plus
- Last updated: 2026-10-10
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. DeepSeek V4 Flash scores higher in 8 categories and Qwen Plus in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where DeepSeek V4 Flash leads 60.3 to 23.3.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 94.4% for DeepSeek V4 Flash and 17.8% for Qwen Plus.
- DeepSeek V4 Flash is cheaper at $0.15 / $0.60 per million input/output tokens, against $0.40 / $1.20 for Qwen Plus.
- DeepSeek V4 Flash has downloadable open weights; the other is API-only.

## Snapshot

| | DeepSeek V4 Flash | Qwen Plus |
|---|---|---|
| Provider | DeepSeek | Alibaba (Qwen) |
| Noometry Index | 53.6 | 37.1 |
| Rank | 35 | 210 |
| Context | 1M | 1M |
| Input $/M | $0.15 | $0.40 |
| Output $/M | $0.60 | $1.20 |
| Weights | Open | Proprietary |

## Coding

- DeepSeek V4 Flash: 47.9 (#59)
- Qwen Plus: 38.9 (#167)

| Benchmark | DeepSeek V4 Flash | Qwen Plus |
|---|---|---|
| LMArena Coding | 1457 | 1328 |
| FrontierCode | 18.8% | — |
| LMArena WebDev | 1582 | — |
| SciCode | 49.9% | — |
| WeirdML | 63% | — |
| ALE-Bench | 1,306 | — |

## Reasoning

- DeepSeek V4 Flash: 53.7 (#30)
- Qwen Plus: 28.4 (#107)

| Benchmark | DeepSeek V4 Flash | Qwen Plus |
|---|---|---|
| Kagi LLM Benchmark | 52.2% | 63.3% |
| LMArena Hard Prompts | 1444 | 1317 |
| DTBench | 90.9% | 81.1% |
| LMCA | 41.7% | 24% |
| ARC-AGI-2 | 61.4% | — |
| SimpleBench | 61.1% | — |
| NYT Connections (extended) | 89.6% | — |
| ARC-AGI-1 | 89% | — |
| CritPt | 16.6% | — |
| Chess Puzzles | 33% | — |
| Mystery Game Puzzles | 34% | — |
| Epoch Capabilities Index | 154.49 | — |

## Math

- DeepSeek V4 Flash: 60.3 (#37)
- Qwen Plus: 23.3 (#271)

| Benchmark | DeepSeek V4 Flash | Qwen Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 94.4% | 17.8% |
| LMArena Math | 1427 | 1326 |
| FrontierMath (Tiers 1-3) | 57.5% | — |
| FrontierMath Tier 4 | 24.4% | — |
| MathArena Final-Answer Competitions | 76.5% | — |
| ProofBench | 56% | — |
| MATH Level 5 | — | 65.3% |
| FrontierMath (Feb 2025 set) | — | 1.7% |

## Knowledge

- DeepSeek V4 Flash: 55.4 (#48)
- Qwen Plus: 27.4 (#251)

| Benchmark | DeepSeek V4 Flash | Qwen Plus |
|---|---|---|
| GPQA Diamond | 91% | 48.1% |
| LMArena Expert | 1441 | 1328 |
| SimpleQA Verified | 33.6% | — |

## Multilingual

- DeepSeek V4 Flash: 53.0 (#72)
- Qwen Plus: 45.1 (#175)

| Benchmark | DeepSeek V4 Flash | Qwen Plus |
|---|---|---|
| LMArena Non-English | 1420 | 1310 |
| LMArena Chinese | 1468 | 1347 |
| LMArena Japanese | 1406 | 1251 |
| LMArena Russian | 1428 | 1323 |
| LMArena French | 1439 | — |
| LMArena German | 1418 | — |
| LMArena Korean | 1384 | — |
| LMArena Spanish | 1436 | — |

## Instruction Following

- DeepSeek V4 Flash: 74.9 (#81)
- Qwen Plus: 68.8 (#181)

| Benchmark | DeepSeek V4 Flash | Qwen Plus |
|---|---|---|
| LMArena Instruction Following | 1421 | 1303 |

## Long Context

- DeepSeek V4 Flash: 43.8 (#85)
- Qwen Plus: 40.3 (#158)

| Benchmark | DeepSeek V4 Flash | Qwen Plus |
|---|---|---|
| LMArena Longer Query | 1434 | 1324 |

## Writing & Preference

- DeepSeek V4 Flash: 63.8 (#61)
- Qwen Plus: 52.2 (#176)

| Benchmark | DeepSeek V4 Flash | Qwen Plus |
|---|---|---|
| LMArena Text | 1432 | 1326 |
| LMArena Creative Writing | 1403 | 1293 |
| LMArena Multi-Turn | 1449 | 1336 |
| EQ-Bench Creative Writing | 1559 | — |

## FAQ

### Is DeepSeek V4 Flash better than Qwen Plus?

DeepSeek V4 Flash is the stronger model overall, scoring 53.6 to 37.1 on the Noometry Index.

### Which is cheaper, DeepSeek V4 Flash or Qwen Plus?

DeepSeek V4 Flash is cheaper. It lists at $0.15 per million input tokens and $0.60 per million output tokens; Qwen Plus lists at $0.40 and $1.20.

### Is DeepSeek V4 Flash or Qwen Plus better for coding?

DeepSeek V4 Flash scores higher on coding benchmarks: 47.9 versus 38.9 in the Noometry coding category.

### Which has the bigger context window?

Both accept 1M tokens.

### How many benchmarks do DeepSeek V4 Flash and Qwen Plus share?

18 benchmarks have published results for both models. DeepSeek V4 Flash has 41 scored results on Noometry and Qwen Plus has 20.