# Claude Opus 5 vs Qwen3.6 Flash

> Claude Opus 5 is the stronger model overall, scoring 67.7 to 38.4 on the Noometry Index. Qwen3.6 Flash costs 24× less per token, which makes it the better buy when Claude Opus 5's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/claude-opus-5-vs-qwen3-6-flash
- Last updated: 2026-10-10
- Shared benchmarks: 11

## Summary

- They share 11 benchmarks with published results for both. Claude Opus 5 scores higher in 3 categories and Qwen3.6 Flash in 0 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Claude Opus 5 leads 77.1 to 28.4.
- The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 85.6% for Claude Opus 5 and 22.5% for Qwen3.6 Flash.
- Qwen3.6 Flash is cheaper at $0.19 / $1.13 per million input/output tokens, against $5 / $25 for Claude Opus 5.

## Snapshot

| | Claude Opus 5 | Qwen3.6 Flash |
|---|---|---|
| Provider | Anthropic | Alibaba (Qwen) |
| Noometry Index | 67.7 | 38.4 |
| Rank | 4 | 176 |
| Context | 1M | 1M |
| Input $/M | $5 | $0.19 |
| Output $/M | $25 | $1.13 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Opus 5: 67.0 (#5)
- Qwen3.6 Flash: —

| Benchmark | Claude Opus 5 | Qwen3.6 Flash |
|---|---|---|
| ALE-Bench | 2,165 | 326.4 |
| DeepSWE | 73.6% | — |
| FrontierCode | 53.4% | — |
| CursorBench | 46.6% | — |
| LMArena WebDev | 1694 | — |
| FrontierSWE | 52% | — |
| SciCode | 56.4% | — |
| WeirdML | 91.8% | — |
| LMArena Coding | 1533 | — |

## Agentic & Tool Use

- Claude Opus 5: 55.5 (#1)
- Qwen3.6 Flash: —

| Benchmark | Claude Opus 5 | Qwen3.6 Flash |
|---|---|---|
| APEX-Agents | 65.8% | — |
| OSWorld 2.0 | 31.4% | — |
| τ²-bench Banking | 48.7% | — |
| PostTrainBench | 35% | — |
| BALROG | 63.4% | — |
| GBAEval | 79.6% | — |
| GDP.pdf | 24% | — |
| Vending-Bench 2 | 11,182 | — |

## Reasoning

- Claude Opus 5: 77.1 (#3)
- Qwen3.6 Flash: 28.4 (#90)

| Benchmark | Claude Opus 5 | Qwen3.6 Flash |
|---|---|---|
| SimpleBench | 80.6% | 35.2% |
| Chess Puzzles | 42% | 20% |
| Mystery Game Puzzles | 59% | 18% |
| DTBench | 97.9% | 77.1% |
| LMCA | 64.5% | 31% |
| Epoch Capabilities Index | 162.67 | 143.26 |
| ARC-AGI-2 | 90.4% | — |
| NYT Connections (extended) | 94.3% | — |
| ARC-AGI-1 | 97.5% | — |
| CritPt | 29.1% | — |
| EBR-Bench | 45.7% | — |
| LMArena Hard Prompts | 1525 | — |
| Bench to the Future 3 | 0.12 | — |

## Math

- Claude Opus 5: 86.1 (#6)
- Qwen3.6 Flash: 38.0 (#88)

| Benchmark | Claude Opus 5 | Qwen3.6 Flash |
|---|---|---|
| FrontierMath (Tiers 1-3) | 85.6% | 22.5% |
| OTIS Mock AIME 2024-2025 | 98.9% | 84.4% |
| FrontierMath Tier 4 | 73.2% | — |
| ProofBench | 99% | — |
| LMArena Math | 1533 | — |
| FrontierMath (Feb 2025 set) | — | 10.3% |
| FrontierMath Tier 4 (v1) | — | 0% |

## Knowledge

- Claude Opus 5: 66.8 (#8)
- Qwen3.6 Flash: 42.2 (#90)

| Benchmark | Claude Opus 5 | Qwen3.6 Flash |
|---|---|---|
| GPQA Diamond | 93.9% | 83.3% |
| SimpleQA Verified | 59.9% | 15.9% |
| LMArena Expert | 1558 | — |

## Multimodal

- Claude Opus 5: 51.1 (#6)
- Qwen3.6 Flash: —

| Benchmark | Claude Opus 5 | Qwen3.6 Flash |
|---|---|---|
| LMArena Vision | 1321 | — |
| Blueprint-Bench 2 | 30.4% | — |
| Furniture Assembly | 60.8% | — |
| LMArena Document | 1516 | — |

## Multilingual

- Claude Opus 5: 58.8 (#3)
- Qwen3.6 Flash: —

| Benchmark | Claude Opus 5 | Qwen3.6 Flash |
|---|---|---|
| LMArena Non-English | 1500 | — |
| LMArena Chinese | 1575 | — |
| LMArena French | 1522 | — |
| LMArena German | 1522 | — |
| LMArena Japanese | 1510 | — |
| LMArena Korean | 1526 | — |
| LMArena Russian | 1507 | — |
| LMArena Spanish | 1519 | — |

## Instruction Following

- Claude Opus 5: 79.3 (#5)
- Qwen3.6 Flash: —

| Benchmark | Claude Opus 5 | Qwen3.6 Flash |
|---|---|---|
| LMArena Instruction Following | 1516 | — |

## Long Context

- Claude Opus 5: 46.5 (#20)
- Qwen3.6 Flash: —

| Benchmark | Claude Opus 5 | Qwen3.6 Flash |
|---|---|---|
| LMArena Longer Query | 1516 | — |

## Writing & Preference

- Claude Opus 5: 79.3 (#2)
- Qwen3.6 Flash: —

| Benchmark | Claude Opus 5 | Qwen3.6 Flash |
|---|---|---|
| LMArena Text | 1506 | — |
| LMArena Creative Writing | 1491 | — |
| EQ-Bench Creative Writing | 2133 | — |
| EQ-Bench 4 | 1385 | — |
| LMArena Multi-Turn | 1496 | — |

## FAQ

### Is Claude Opus 5 better than Qwen3.6 Flash?

Claude Opus 5 is the stronger model overall, scoring 67.7 to 38.4 on the Noometry Index. Qwen3.6 Flash costs 24× less per token, which makes it the better buy when Claude Opus 5's lead doesn't matter for your workload.

### Which is cheaper, Claude Opus 5 or Qwen3.6 Flash?

Qwen3.6 Flash is cheaper. It lists at $0.19 per million input tokens and $1.13 per million output tokens; Claude Opus 5 lists at $5 and $25.

### Which has the bigger context window?

Both accept 1M tokens.

### How many benchmarks do Claude Opus 5 and Qwen3.6 Flash share?

11 benchmarks have published results for both models. Claude Opus 5 has 57 scored results on Noometry and Qwen3.6 Flash has 13.