Model comparison
Claude 3.5 Sonnet vs Qwen3.5-9B
Claude 3.5 Sonnet and Qwen3.5-9B score almost the same on the Noometry Index (34.6 vs 33.8), so choose on price, context window or the category you care about most.
Last verified . 4 shared benchmarks.
Alibaba (Qwen)Summary
- They share 4 benchmarks with published results for both. Claude 3.5 Sonnet scores higher in 2 categories and Qwen3.5-9B in 3 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in agentic & tool use, where Claude 3.5 Sonnet leads 32.3 to 14.5.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 8.5% for Claude 3.5 Sonnet and 61.7% for Qwen3.5-9B.
- Qwen3.5-9B has downloadable open weights; the other is API-only.
Side by side
| Claude 3.5 Sonnet | Qwen3.5-9B | |
|---|---|---|
| Provider | Anthropic | Alibaba (Qwen) |
| Noometry Index | 34.6 | 33.8 |
| Released | 2024-06-20 | 2026-02-23 |
| Weights | Proprietary | Open |
| Context window | — | 262K |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.10 |
| Output $ / M tokens | — | $0.15 |
| Results tracked | 60 | 10 |
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Category by category
Coding Claude 3.5 Sonnet leads
Claude 3.5 Sonnet: 39.0 (#165), Qwen3.5-9B: 35.9 (#217)
| Benchmark | Claude 3.5 Sonnet | Qwen3.5-9B |
|---|---|---|
| Aider Polyglot | 51.6% | — |
| SciCode | — | 27.5% |
| GSO | 4.6% | — |
| WeirdML | 40% | — |
| BigCodeBench Instruct | 46.8% | — |
| LiveBench Coding | 67.1% | — |
| LMArena Coding | 1342 | — |
| BigCodeBench Complete | 58.6% | — |
| CadEval | 48% | — |
| HumanEval+ | 81.7% | — |
| MBPP+ | 74.3% | — |
Agentic & Tool Use Claude 3.5 Sonnet leads
Claude 3.5 Sonnet: 32.3 (#67), Qwen3.5-9B: 14.5 (#151)
| Benchmark | Claude 3.5 Sonnet | Qwen3.5-9B |
|---|---|---|
| Terminal-Bench | — | 9.2% |
| TheAgentCompany | 24% | — |
| Cybench | 17.5% | — |
| BALROG | 32.6% | — |
| METR Time Horizons | 45.2% | — |
Reasoning Too close to call
Claude 3.5 Sonnet: 23.1 (#183), Qwen3.5-9B: 23.1 (#182)
| Benchmark | Claude 3.5 Sonnet | Qwen3.5-9B |
|---|---|---|
| DTBench | 67.8% | 71.2% |
| Epoch Capabilities Index | 133.55 | 139.46 |
| SimpleBench | 41.4% | — |
| CritPt | — | 0.3% |
| Chess Puzzles | — | 12% |
| EnigmaEval | 0.9% | — |
| LiveBench Reasoning | 56.7% | — |
| LMArena Hard Prompts | 1305 | — |
| LiveBench Data Analysis | 55% | — |
| LMCA | — | 24.5% |
| ForecastBench | 60.7 | — |
| LiveBench | 59% | — |
Math Qwen3.5-9B leads
Claude 3.5 Sonnet: 19.2 (#288), Qwen3.5-9B: 34.8 (#192)
| Benchmark | Claude 3.5 Sonnet | Qwen3.5-9B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 8.5% | 61.7% |
| MathArena Final-Answer Competitions | — | 48.5% |
| Omni-MATH | 27.6% | — |
| LiveBench Math | 52.3% | — |
| LMArena Math | 1307 | — |
| MATH Level 5 | 56.9% | — |
| FrontierMath (Feb 2025 set) | 2.1% | — |
| FrontierMath Tier 4 (v1) | 0% | — |
Knowledge Qwen3.5-9B leads
Claude 3.5 Sonnet: 28.6 (#245), Qwen3.5-9B: 46.0 (#84)
| Benchmark | Claude 3.5 Sonnet | Qwen3.5-9B |
|---|---|---|
| GPQA Diamond | 55.3% | 79% |
| Humanity's Last Exam | 4.1% | — |
| MMLU-Pro | 77.7% | — |
| Confabulations | 19.9% | — |
| GPQA (HELM) | 56.5% | — |
| LMArena Expert | 1265 | — |
| MMLU | 87.3% | — |
Multimodal Not comparable
Claude 3.5 Sonnet: 26.5 (#120), Qwen3.5-9B: —
| Benchmark | Claude 3.5 Sonnet | Qwen3.5-9B |
|---|---|---|
| LMArena Vision | 1125 | — |
| Video-MME | 60% | — |
| GeoBench | 62% | — |
| VPCT | 33% | — |
Multilingual Not comparable
Claude 3.5 Sonnet: 43.2 (#185), Qwen3.5-9B: —
| Benchmark | Claude 3.5 Sonnet | Qwen3.5-9B |
|---|---|---|
| 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), Qwen3.5-9B: —
| Benchmark | Claude 3.5 Sonnet | Qwen3.5-9B |
|---|---|---|
| LiveBench Instruction Following | 69.3% | — |
| IFEval | 85.5% | — |
| LMArena Instruction Following | 1297 | — |
Long Context Not comparable
Claude 3.5 Sonnet: 39.9 (#167), Qwen3.5-9B: —
| Benchmark | Claude 3.5 Sonnet | Qwen3.5-9B |
|---|---|---|
| LMArena Longer Query | 1311 | — |
Writing & Preference Not comparable
Claude 3.5 Sonnet: 52.9 (#164), Qwen3.5-9B: —
| Benchmark | Claude 3.5 Sonnet | Qwen3.5-9B |
|---|---|---|
| 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 Qwen3.5-9B?
Claude 3.5 Sonnet and Qwen3.5-9B score almost the same on the Noometry Index (34.6 vs 33.8), so choose on price, context window or the category you care about most.
Is Claude 3.5 Sonnet or Qwen3.5-9B better for coding?
Claude 3.5 Sonnet scores higher on coding benchmarks: 39.0 versus 35.9 in the Noometry coding category.
How many benchmarks do Claude 3.5 Sonnet and Qwen3.5-9B share?
4 benchmarks have published results for both models. Claude 3.5 Sonnet has 60 scored results on Noometry and Qwen3.5-9B has 10.