# Qwen3.5-9B vs Qwen3.6 Plus

> Qwen3.6 Plus is the stronger model overall, scoring 47.5 to 33.8 on the Noometry Index. Qwen3.5-9B costs 10.0× less per token, which makes it the better buy when Qwen3.6 Plus's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/qwen3-5-9b-vs-qwen3-6-plus
- Last updated: 2026-10-10
- Shared benchmarks: 8

## Summary

- They share 8 benchmarks with published results for both. Qwen3.5-9B scores higher in 0 categories and Qwen3.6 Plus in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in math, where Qwen3.6 Plus leads 51.8 to 34.8.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 61.7% for Qwen3.5-9B and 93.3% for Qwen3.6 Plus.
- Qwen3.5-9B is cheaper at $0.10 / $0.15 per million input/output tokens, against $0.50 / $3 for Qwen3.6 Plus.
- Qwen3.6 Plus accepts more context: 1M tokens versus 262K.
- Qwen3.5-9B has downloadable open weights; the other is API-only.

## Snapshot

| | Qwen3.5-9B | Qwen3.6 Plus |
|---|---|---|
| Provider | Alibaba (Qwen) | Alibaba (Qwen) |
| Noometry Index | 33.8 | 47.5 |
| Rank | 236 | 62 |
| Context | 262K | 1M |
| Input $/M | $0.10 | $0.50 |
| Output $/M | $0.15 | $3 |
| Weights | Open | Proprietary |

## Coding

- Qwen3.5-9B: 35.9 (#217)
- Qwen3.6 Plus: 40.8 (#130)

| Benchmark | Qwen3.5-9B | Qwen3.6 Plus |
|---|---|---|
| SciCode | 27.5% | 40.7% |
| SWE-bench Verified | — | 57.9% |
| LMArena WebDev | — | 1461 |
| LMArena Coding | — | 1467 |
| ALE-Bench | — | 670.15 |

## Agentic & Tool Use

- Qwen3.5-9B: 14.5 (#151)
- Qwen3.6 Plus: —

| Benchmark | Qwen3.5-9B | Qwen3.6 Plus |
|---|---|---|
| Terminal-Bench | 9.2% | — |
| Vending-Bench 2 | — | 5,115 |

## Reasoning

- Qwen3.5-9B: 23.1 (#182)
- Qwen3.6 Plus: 29.3 (#93)

| Benchmark | Qwen3.5-9B | Qwen3.6 Plus |
|---|---|---|
| CritPt | 0.3% | 2.9% |
| Chess Puzzles | 12% | 17% |
| DTBench | 71.2% | 81.9% |
| LMCA | 24.5% | 33.1% |
| Epoch Capabilities Index | 139.46 | 147.65 |
| NYT Connections (extended) | — | 60.3% |
| Thematic Generalization | — | 59.5% |
| LMArena Hard Prompts | — | 1449 |
| Mystery Game Puzzles | — | 12% |

## Math

- Qwen3.5-9B: 34.8 (#192)
- Qwen3.6 Plus: 51.8 (#54)

| Benchmark | Qwen3.5-9B | Qwen3.6 Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 61.7% | 93.3% |
| FrontierMath (Tiers 1-3) | — | 38.2% |
| MathArena Final-Answer Competitions | 48.5% | — |
| LMArena Math | — | 1450 |
| FrontierMath (Feb 2025 set) | — | 26.2% |
| FrontierMath Tier 4 (v1) | — | 8.3% |

## Knowledge

- Qwen3.5-9B: 46.0 (#84)
- Qwen3.6 Plus: 56.1 (#45)

| Benchmark | Qwen3.5-9B | Qwen3.6 Plus |
|---|---|---|
| GPQA Diamond | 79% | 88.4% |
| SimpleQA Verified | — | 44.1% |
| LMArena Expert | — | 1454 |

## Multilingual

- Qwen3.5-9B: —
- Qwen3.6 Plus: 53.3 (#70)

| Benchmark | Qwen3.5-9B | Qwen3.6 Plus |
|---|---|---|
| LMArena Non-English | — | 1424 |
| LMArena Chinese | — | 1477 |
| LMArena French | — | 1455 |
| LMArena German | — | 1452 |
| LMArena Japanese | — | 1389 |
| LMArena Korean | — | 1379 |
| LMArena Russian | — | 1434 |
| LMArena Spanish | — | 1432 |

## Instruction Following

- Qwen3.5-9B: —
- Qwen3.6 Plus: 75.0 (#74)

| Benchmark | Qwen3.5-9B | Qwen3.6 Plus |
|---|---|---|
| LMArena Instruction Following | — | 1425 |

## Long Context

- Qwen3.5-9B: —
- Qwen3.6 Plus: 45.2 (#49)

| Benchmark | Qwen3.5-9B | Qwen3.6 Plus |
|---|---|---|
| CL-bench | — | 20.3% |
| LMArena Longer Query | — | 1439 |

## Writing & Preference

- Qwen3.5-9B: —
- Qwen3.6 Plus: 62.2 (#82)

| Benchmark | Qwen3.5-9B | Qwen3.6 Plus |
|---|---|---|
| LMArena Text | — | 1437 |
| LMArena Creative Writing | — | 1404 |
| LMArena Multi-Turn | — | 1438 |

## FAQ

### Is Qwen3.5-9B better than Qwen3.6 Plus?

Qwen3.6 Plus is the stronger model overall, scoring 47.5 to 33.8 on the Noometry Index. Qwen3.5-9B costs 10.0× less per token, which makes it the better buy when Qwen3.6 Plus's lead doesn't matter for your workload.

### Which is cheaper, Qwen3.5-9B or Qwen3.6 Plus?

Qwen3.5-9B is cheaper. It lists at $0.10 per million input tokens and $0.15 per million output tokens; Qwen3.6 Plus lists at $0.50 and $3.

### Is Qwen3.5-9B or Qwen3.6 Plus better for coding?

Qwen3.6 Plus scores higher on coding benchmarks: 40.8 versus 35.9 in the Noometry coding category.

### Which has the bigger context window?

Qwen3.6 Plus does, with 1M tokens against 262K.

### How many benchmarks do Qwen3.5-9B and Qwen3.6 Plus share?

8 benchmarks have published results for both models. Qwen3.5-9B has 10 scored results on Noometry and Qwen3.6 Plus has 37.