Model comparison
Claude 3.5 Sonnet vs Qwen3.5 Plus
Qwen3.5 Plus is the stronger model overall, scoring 42.9 to 34.6 on the Noometry Index.
Last verified . 6 shared benchmarks.
Alibaba (Qwen)Summary
- They share 6 benchmarks with published results for both. Claude 3.5 Sonnet scores higher in 0 categories and Qwen3.5 Plus in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in math, where Qwen3.5 Plus leads 49.6 to 19.2.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 8.5% for Claude 3.5 Sonnet and 86.7% for Qwen3.5 Plus.
Side by side
| Claude 3.5 Sonnet | Qwen3.5 Plus | |
|---|---|---|
| Provider | Anthropic | Alibaba (Qwen) |
| Noometry Index | 34.6 | 42.9 |
| Released | 2024-06-20 | 2026-02-16 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1M |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.40 |
| Output $ / M tokens | — | $2.40 |
| Results tracked | 60 | 15 |
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Category by category
Coding Not comparable
Claude 3.5 Sonnet: 39.0 (#165), Qwen3.5 Plus: —
| Benchmark | Claude 3.5 Sonnet | Qwen3.5 Plus |
|---|---|---|
| Aider Polyglot | 51.6% | — |
| GSO | 4.6% | — |
| WeirdML | 40% | — |
| BigCodeBench Instruct | 46.8% | — |
| LiveBench Coding | 67.1% | — |
| LMArena Coding | 1342 | — |
| BigCodeBench Complete | 58.6% | — |
| CadEval | 48% | — |
| ALE-Bench | — | 621.92 |
| HumanEval+ | 81.7% | — |
| MBPP+ | 74.3% | — |
Agentic & Tool Use Not comparable
Claude 3.5 Sonnet: 32.3 (#67), Qwen3.5 Plus: —
| Benchmark | Claude 3.5 Sonnet | Qwen3.5 Plus |
|---|---|---|
| TheAgentCompany | 24% | — |
| Cybench | 17.5% | — |
| BALROG | 32.6% | — |
| METR Time Horizons | 45.2% | — |
| Vending-Bench 2 | — | 0.54 |
Reasoning Qwen3.5 Plus leads
Claude 3.5 Sonnet: 23.1 (#183), Qwen3.5 Plus: 32.8 (#74)
| Benchmark | Claude 3.5 Sonnet | Qwen3.5 Plus |
|---|---|---|
| DTBench | 67.8% | 80.5% |
| Epoch Capabilities Index | 133.55 | 146.78 |
| SimpleBench | 41.4% | — |
| Chess Puzzles | — | 22% |
| EnigmaEval | 0.9% | — |
| LiveBench Reasoning | 56.7% | — |
| LMArena Hard Prompts | 1305 | — |
| Mystery Game Puzzles | — | 17% |
| LiveBench Data Analysis | 55% | — |
| LMCA | — | 36.4% |
| ForecastBench | 60.7 | — |
| LiveBench | 59% | — |
Math Qwen3.5 Plus leads
Claude 3.5 Sonnet: 19.2 (#288), Qwen3.5 Plus: 49.6 (#61)
| Benchmark | Claude 3.5 Sonnet | Qwen3.5 Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 8.5% | 86.7% |
| FrontierMath (Feb 2025 set) | 2.1% | 21% |
| FrontierMath Tier 4 (v1) | 0% | 2.1% |
| Omni-MATH | 27.6% | — |
| LiveBench Math | 52.3% | — |
| LMArena Math | 1307 | — |
| MATH Level 5 | 56.9% | — |
Knowledge Qwen3.5 Plus leads
Claude 3.5 Sonnet: 28.6 (#245), Qwen3.5 Plus: 46.0 (#83)
| Benchmark | Claude 3.5 Sonnet | Qwen3.5 Plus |
|---|---|---|
| GPQA Diamond | 55.3% | 84.8% |
| Humanity's Last Exam | 4.1% | — |
| SimpleQA Verified | — | 25.4% |
| MMLU-Pro | 77.7% | — |
| Confabulations | 19.9% | — |
| Vectara Hallucination Rate | — | 10.7% |
| GPQA (HELM) | 56.5% | — |
| LMArena Expert | 1265 | — |
| MMLU | 87.3% | — |
Multimodal Not comparable
Claude 3.5 Sonnet: 26.5 (#120), Qwen3.5 Plus: —
| Benchmark | Claude 3.5 Sonnet | Qwen3.5 Plus |
|---|---|---|
| LMArena Vision | 1125 | — |
| Video-MME | 60% | — |
| GeoBench | 62% | — |
| VPCT | 33% | — |
Multilingual Not comparable
Claude 3.5 Sonnet: 43.2 (#185), Qwen3.5 Plus: —
| Benchmark | Claude 3.5 Sonnet | Qwen3.5 Plus |
|---|---|---|
| LMArena Non-English | 1283 | — |
| LMArena Chinese | 1272 | — |
| LMArena French | 1305 | — |
| LMArena German | 1297 | — |
| LMArena Japanese | 1234 | — |
| LMArena Korean | 1200 | — |
| LMArena Russian | 1306 | — |
| LMArena Spanish | 1290 | — |
Instruction Following Not comparable
Claude 3.5 Sonnet: 68.8 (#182), Qwen3.5 Plus: —
| Benchmark | Claude 3.5 Sonnet | Qwen3.5 Plus |
|---|---|---|
| LiveBench Instruction Following | 69.3% | — |
| IFEval | 85.5% | — |
| LMArena Instruction Following | 1297 | — |
Long Context Qwen3.5 Plus leads
Claude 3.5 Sonnet: 39.9 (#167), Qwen3.5 Plus: 43.0 (#113)
| Benchmark | Claude 3.5 Sonnet | Qwen3.5 Plus |
|---|---|---|
| CL-bench | — | 19.8% |
| CL-bench Life | — | 12.4% |
| LMArena Longer Query | 1311 | — |
Writing & Preference Not comparable
Claude 3.5 Sonnet: 52.9 (#164), Qwen3.5 Plus: —
| Benchmark | Claude 3.5 Sonnet | Qwen3.5 Plus |
|---|---|---|
| LMArena Text | 1298 | — |
| LMArena Creative Writing | 1292 | — |
| Short-Story Creative Writing | 80.3% | — |
| EQ-Bench Creative Writing | 1451 | — |
| WildBench | 79.2% | — |
| LMArena Multi-Turn | 1326 | — |
| LiveBench Language | 53.8% | — |
Frequently asked questions
Is Claude 3.5 Sonnet better than Qwen3.5 Plus?
Qwen3.5 Plus is the stronger model overall, scoring 42.9 to 34.6 on the Noometry Index.
How many benchmarks do Claude 3.5 Sonnet and Qwen3.5 Plus share?
6 benchmarks have published results for both models. Claude 3.5 Sonnet has 60 scored results on Noometry and Qwen3.5 Plus has 15.