Model comparison
Claude Sonnet 4.5 vs Qwen Plus
Claude Sonnet 4.5 is the stronger model overall, scoring 44.1 to 37.1 on the Noometry Index. Qwen Plus costs 10.0× less per token, which makes it the better buy when Claude Sonnet 4.5's lead doesn't matter for your workload.
Last verified . 20 shared benchmarks.
Alibaba (Qwen)Summary
- They share 20 benchmarks with published results for both. Claude Sonnet 4.5 scores higher in 7 categories and Qwen Plus in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Claude Sonnet 4.5 leads 48.4 to 27.4.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 77.8% for Claude Sonnet 4.5 and 17.8% for Qwen Plus.
- Qwen Plus is cheaper at $0.40 / $1.20 per million input/output tokens, against $3 / $15 for Claude Sonnet 4.5.
- Qwen Plus accepts more context: 1M tokens versus 200K.
Side by side
| Claude Sonnet 4.5 | Qwen Plus | |
|---|---|---|
| Provider | Anthropic | Alibaba (Qwen) |
| Noometry Index | 44.1 | 37.1 |
| Released | 2025-09-29 | 2024-01-25 |
| Weights | Proprietary | Proprietary |
| Context window | 200K | 1M |
| Max output | 64K | 33K |
| Input $ / M tokens | $3 | $0.40 |
| Output $ / M tokens | $15 | $1.20 |
| Results tracked | 73 | 20 |
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Category by category
Coding Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 47.3 (#61), Qwen Plus: 38.9 (#167)
| Benchmark | Claude Sonnet 4.5 | Qwen Plus |
|---|---|---|
| LMArena Coding | 1489 | 1328 |
| SWE-bench Verified | 71.3% | — |
| SWE-bench Verified (bash only) | 71.4% | — |
| LMArena WebDev | 1393 | — |
| SWE-bench Multilingual | 67% | — |
| SciCode | 44.7% | — |
| GSO | 14.7% | — |
| WeirdML | 47.7% | — |
| ALE-Bench | 796.15 | — |
| AlgoTune | 1.52 | — |
Agentic & Tool Use Not comparable
Claude Sonnet 4.5: 38.3 (#32), Qwen Plus: —
| Benchmark | Claude Sonnet 4.5 | Qwen Plus |
|---|---|---|
| Terminal-Bench | 46.5% | — |
| Berkeley Function Calling Leaderboard | 73.2% | — |
| GDPval | 42.5% | — |
| Remote Labor Index | 2.1% | — |
| τ²-bench Airline | 72% | — |
| τ²-bench Banking | 25.3% | — |
| τ²-bench Retail | 72.4% | — |
| τ²-bench Telecom | 84.9% | — |
| Cybench | 60% | — |
| DeepResearch Bench | 52.6% | — |
| OSWorld | 62.9% | — |
| LMArena Search | 1159 | — |
| METR Time Horizons | 67.4% | — |
| Vending-Bench 2 | 3,839 | — |
Reasoning Qwen Plus leads
Claude Sonnet 4.5: 26.9 (#125), Qwen Plus: 28.4 (#107)
| Benchmark | Claude Sonnet 4.5 | Qwen Plus |
|---|---|---|
| Kagi LLM Benchmark | 57.9% | 63.3% |
| LMArena Hard Prompts | 1462 | 1317 |
| DTBench | 83.2% | 81.1% |
| LMCA | 38.8% | 24% |
| ARC-AGI-2 | 13.6% | — |
| SimpleBench | 54.3% | — |
| NYT Connections (extended) | 37.3% | — |
| ARC-AGI-1 | 63.7% | — |
| CritPt | 1.1% | — |
| Chess Puzzles | 12% | — |
| EnigmaEval | 6% | — |
| EBR-Bench | 2.4% | — |
| Mystery Game Puzzles | 17% | — |
| Epoch Capabilities Index | 146.84 | — |
| ForecastBench | 61.9 | — |
Math Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 32.3 (#216), Qwen Plus: 23.3 (#271)
| Benchmark | Claude Sonnet 4.5 | Qwen Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 77.8% | 17.8% |
| LMArena Math | 1449 | 1326 |
| MATH Level 5 | 97.7% | 65.3% |
| FrontierMath (Feb 2025 set) | 15.2% | 1.7% |
| FrontierMath (Tiers 1-3) | 23.9% | — |
| FrontierMath Tier 4 | 2.4% | — |
| ProofBench | 19% | — |
| Omni-MATH | 55.3% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 48.4 (#76), Qwen Plus: 27.4 (#251)
| Benchmark | Claude Sonnet 4.5 | Qwen Plus |
|---|---|---|
| GPQA Diamond | 82.3% | 48.1% |
| LMArena Expert | 1482 | 1328 |
| Humanity's Last Exam | 13.7% | — |
| SimpleQA Verified | 30.7% | — |
| MMLU-Pro | 86.9% | — |
| Vectara Hallucination Rate | 12% | — |
| GPQA (HELM) | 68.6% | — |
Multimodal Not comparable
Claude Sonnet 4.5: 34.8 (#89), Qwen Plus: —
| Benchmark | Claude Sonnet 4.5 | Qwen Plus |
|---|---|---|
| VPCT | 39.8% | — |
| LMArena Document | 1450 | — |
Multilingual Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 53.4 (#69), Qwen Plus: 45.1 (#175)
| Benchmark | Claude Sonnet 4.5 | Qwen Plus |
|---|---|---|
| LMArena Non-English | 1425 | 1310 |
| LMArena Chinese | 1459 | 1347 |
| LMArena Japanese | 1390 | 1251 |
| LMArena Russian | 1437 | 1323 |
| LMArena French | 1458 | — |
| LMArena German | 1427 | — |
| LMArena Korean | 1403 | — |
| LMArena Spanish | 1457 | — |
Instruction Following Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 75.0 (#78), Qwen Plus: 68.8 (#181)
| Benchmark | Claude Sonnet 4.5 | Qwen Plus |
|---|---|---|
| LMArena Instruction Following | 1459 | 1303 |
| IFEval | 85% | — |
Long Context Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 45.2 (#46), Qwen Plus: 40.3 (#158)
| Benchmark | Claude Sonnet 4.5 | Qwen Plus |
|---|---|---|
| LMArena Longer Query | 1476 | 1324 |
Writing & Preference Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 66.5 (#34), Qwen Plus: 52.2 (#176)
| Benchmark | Claude Sonnet 4.5 | Qwen Plus |
|---|---|---|
| LMArena Text | 1439 | 1326 |
| LMArena Creative Writing | 1442 | 1293 |
| LMArena Multi-Turn | 1465 | 1336 |
| EQ-Bench Creative Writing | 1678 | — |
| WildBench | 85.4% | — |
Frequently asked questions
Is Claude Sonnet 4.5 better than Qwen Plus?
Claude Sonnet 4.5 is the stronger model overall, scoring 44.1 to 37.1 on the Noometry Index. Qwen Plus costs 10.0× less per token, which makes it the better buy when Claude Sonnet 4.5's lead doesn't matter for your workload.
Which is cheaper, Claude Sonnet 4.5 or Qwen Plus?
Qwen Plus is cheaper. It lists at $0.40 per million input tokens and $1.20 per million output tokens; Claude Sonnet 4.5 lists at $3 and $15.
Is Claude Sonnet 4.5 or Qwen Plus better for coding?
Claude Sonnet 4.5 scores higher on coding benchmarks: 47.3 versus 38.9 in the Noometry coding category.
Which has the bigger context window?
Qwen Plus does, with 1M tokens against 200K.
How many benchmarks do Claude Sonnet 4.5 and Qwen Plus share?
20 benchmarks have published results for both models. Claude Sonnet 4.5 has 73 scored results on Noometry and Qwen Plus has 20.