# GLM-5.3-Flash vs Qwen3.5 Plus

> GLM-5.3-Flash is the stronger model overall, scoring 51.8 to 42.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/glm-5-3-flash-vs-qwen3-5-plus
- Last updated: 2026-10-10
- Shared benchmarks: 6

## Summary

- They share 6 benchmarks with published results for both. GLM-5.3-Flash scores higher in 4 categories and Qwen3.5 Plus in 0 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GLM-5.3-Flash leads 48.0 to 32.8.
- The biggest single-benchmark swing is Mystery Game Puzzles: 8% for GLM-5.3-Flash and 17% for Qwen3.5 Plus.
- GLM-5.3-Flash is cheaper at $0.15 / $0.50 per million input/output tokens, against $0.40 / $2.40 for Qwen3.5 Plus.
- GLM-5.3-Flash has downloadable open weights; the other is API-only.

## Snapshot

| | GLM-5.3-Flash | Qwen3.5 Plus |
|---|---|---|
| Provider | Z.ai (Zhipu) | Alibaba (Qwen) |
| Noometry Index | 51.8 | 42.9 |
| Rank | 41 | 106 |
| Context | 1M | 1M |
| Input $/M | $0.15 | $0.40 |
| Output $/M | $0.50 | $2.40 |
| Weights | Open | Proprietary |

## Coding

- GLM-5.3-Flash: 53.1 (#31)
- Qwen3.5 Plus: —

| Benchmark | GLM-5.3-Flash | Qwen3.5 Plus |
|---|---|---|
| ALE-Bench | 303.55 | 621.92 |
| DeepSWE | 63.4% | — |
| FrontierCode | 31.8% | — |
| CursorBench | 36.8% | — |
| LMArena WebDev | 1609 | — |
| FrontierSWE | 18.1% | — |
| SciCode | 51.6% | — |
| LMArena Coding | 1508 | — |

## Agentic & Tool Use

- GLM-5.3-Flash: 34.2 (#47)
- Qwen3.5 Plus: —

| Benchmark | GLM-5.3-Flash | Qwen3.5 Plus |
|---|---|---|
| APEX-Agents | 52.8% | — |
| GDP.pdf | 14% | — |
| Vending-Bench 2 | — | 0.54 |

## Reasoning

- GLM-5.3-Flash: 48.0 (#42)
- Qwen3.5 Plus: 32.8 (#74)

| Benchmark | GLM-5.3-Flash | Qwen3.5 Plus |
|---|---|---|
| Chess Puzzles | 14% | 22% |
| Mystery Game Puzzles | 8% | 17% |
| Epoch Capabilities Index | 151.88 | 146.78 |
| ARC-AGI-2 | 65.8% | — |
| ARC-AGI-1 | 91% | — |
| CritPt | 15.4% | — |
| LMArena Hard Prompts | 1491 | — |
| DTBench | — | 80.5% |
| LMCA | — | 36.4% |
| Surface Evolver Bench | 52.5% | — |
| Bench to the Future 3 | 0.15 | — |

## Math

- GLM-5.3-Flash: 53.3 (#47)
- Qwen3.5 Plus: 49.6 (#61)

| Benchmark | GLM-5.3-Flash | Qwen3.5 Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 93.9% | 86.7% |
| FrontierMath (Tiers 1-3) | 55.8% | — |
| FrontierMath Tier 4 | 17.1% | — |
| ProofBench | 21% | — |
| LMArena Math | 1500 | — |
| FrontierMath (Feb 2025 set) | — | 21% |
| FrontierMath Tier 4 (v1) | — | 2.1% |

## Knowledge

- GLM-5.3-Flash: 58.4 (#36)
- Qwen3.5 Plus: 46.0 (#83)

| Benchmark | GLM-5.3-Flash | Qwen3.5 Plus |
|---|---|---|
| GPQA Diamond | 90.2% | 84.8% |
| SimpleQA Verified | — | 25.4% |
| Vectara Hallucination Rate | — | 10.7% |
| LMArena Expert | 1513 | — |

## Multimodal

- GLM-5.3-Flash: 42.8 (#27)
- Qwen3.5 Plus: —

| Benchmark | GLM-5.3-Flash | Qwen3.5 Plus |
|---|---|---|
| LMArena Vision | 1296 | — |

## Multilingual

- GLM-5.3-Flash: 56.0 (#25)
- Qwen3.5 Plus: —

| Benchmark | GLM-5.3-Flash | Qwen3.5 Plus |
|---|---|---|
| LMArena Non-English | 1462 | — |
| LMArena Chinese | 1527 | — |
| LMArena French | 1496 | — |
| LMArena German | 1470 | — |
| LMArena Japanese | 1429 | — |
| LMArena Korean | 1446 | — |
| LMArena Russian | 1469 | — |
| LMArena Spanish | 1471 | — |

## Instruction Following

- GLM-5.3-Flash: 77.5 (#20)
- Qwen3.5 Plus: —

| Benchmark | GLM-5.3-Flash | Qwen3.5 Plus |
|---|---|---|
| LMArena Instruction Following | 1478 | — |

## Long Context

- GLM-5.3-Flash: 45.4 (#39)
- Qwen3.5 Plus: 43.0 (#113)

| Benchmark | GLM-5.3-Flash | Qwen3.5 Plus |
|---|---|---|
| CL-bench | — | 19.8% |
| CL-bench Life | — | 12.4% |
| LMArena Longer Query | 1482 | — |

## Writing & Preference

- GLM-5.3-Flash: 65.3 (#50)
- Qwen3.5 Plus: —

| Benchmark | GLM-5.3-Flash | Qwen3.5 Plus |
|---|---|---|
| LMArena Text | 1471 | — |
| LMArena Creative Writing | 1442 | — |
| LMArena Multi-Turn | 1467 | — |

## FAQ

### Is GLM-5.3-Flash better than Qwen3.5 Plus?

GLM-5.3-Flash is the stronger model overall, scoring 51.8 to 42.9 on the Noometry Index.

### Which is cheaper, GLM-5.3-Flash or Qwen3.5 Plus?

GLM-5.3-Flash is cheaper. It lists at $0.15 per million input tokens and $0.50 per million output tokens; Qwen3.5 Plus lists at $0.40 and $2.40.

### Which has the bigger context window?

Both accept 1M tokens.

### How many benchmarks do GLM-5.3-Flash and Qwen3.5 Plus share?

6 benchmarks have published results for both models. GLM-5.3-Flash has 40 scored results on Noometry and Qwen3.5 Plus has 15.