Model comparison
Claude Sonnet 5.5 vs Qwen3.6 35B-A3B
Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 37.6 on the Noometry Index. Qwen3.6 35B-A3B costs 7.2× less per token, which makes it the better buy when Claude Sonnet 5.5's lead doesn't matter for your workload.
Last verified . 8 shared benchmarks.
Summary
- They share 8 benchmarks with published results for both. Claude Sonnet 5.5 scores higher in 5 categories and Qwen3.6 35B-A3B in 0 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Sonnet 5.5 leads 87.9 to 38.9.
- The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 88.8% for Claude Sonnet 5.5 and 20.4% for Qwen3.6 35B-A3B.
- Qwen3.6 35B-A3B is cheaper at $0.25 / $1.49 per million input/output tokens, against $2 / $10 for Claude Sonnet 5.5.
- Claude Sonnet 5.5 accepts more context: 1M tokens versus 262K.
- Qwen3.6 35B-A3B has downloadable open weights; the other is API-only.
Side by side
| Claude Sonnet 5.5 | Qwen3.6 35B-A3B | |
|---|---|---|
| Provider | Anthropic | Alibaba (Qwen) |
| Noometry Index | 61.9 | 37.6 |
| Released | 2026-09-28 | 2026-04-01 |
| Weights | Proprietary | Open |
| Context window | 1M | 262K |
| Max output | 128K | 66K |
| Input $ / M tokens | $2 | $0.25 |
| Output $ / M tokens | $10 | $1.49 |
| Results tracked | 32 | 14 |
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Category by category
Coding Claude Sonnet 5.5 leads
Claude Sonnet 5.5: 67.3 (#6), Qwen3.6 35B-A3B: 37.2 (#196)
| Benchmark | Claude Sonnet 5.5 | Qwen3.6 35B-A3B |
|---|---|---|
| SciCode | 61% | 35.8% |
| FrontierCode | 52.1% | — |
| CursorBench | 55.5% | — |
| LMArena WebDev | 1774 | — |
| FrontierSWE | 61.9% | — |
| WeirdML | — | 34.5% |
| LMArena Coding | 1513 | — |
| ALE-Bench | 1,819 | — |
Agentic & Tool Use Claude Sonnet 5.5 leads
Claude Sonnet 5.5: 45.0 (#16), Qwen3.6 35B-A3B: 22.1 (#134)
| Benchmark | Claude Sonnet 5.5 | Qwen3.6 35B-A3B |
|---|---|---|
| Terminal-Bench | — | 23% |
| APEX-Agents | 75.5% | — |
Reasoning Claude Sonnet 5.5 leads
Claude Sonnet 5.5: 54.0 (#28), Qwen3.6 35B-A3B: 28.0 (#109)
| Benchmark | Claude Sonnet 5.5 | Qwen3.6 35B-A3B |
|---|---|---|
| NYT Connections (extended) | 80.5% | 41.6% |
| CritPt | 31.4% | 0.3% |
| Mystery Game Puzzles | 65% | 22% |
| Epoch Capabilities Index | 165.03 | 143.93 |
| Chess Puzzles | — | 26% |
| LMArena Hard Prompts | 1495 | — |
| DTBench | — | 73.9% |
| LMCA | — | 29.7% |
| Surface Evolver Bench | — | 44.4% |
Math Claude Sonnet 5.5 leads
Claude Sonnet 5.5: 87.9 (#6), Qwen3.6 35B-A3B: 38.9 (#121)
| Benchmark | Claude Sonnet 5.5 | Qwen3.6 35B-A3B |
|---|---|---|
| FrontierMath (Tiers 1-3) | 88.8% | 20.4% |
| OTIS Mock AIME 2024-2025 | 100% | 86.7% |
| FrontierMath Tier 4 | 80.5% | — |
| ProofBench | 100% | — |
| LMArena Math | 1510 | — |
| FrontierMath Erdős | 2.9% | — |
Knowledge Claude Sonnet 5.5 leads
Claude Sonnet 5.5: 66.0 (#12), Qwen3.6 35B-A3B: 51.3 (#68)
| Benchmark | Claude Sonnet 5.5 | Qwen3.6 35B-A3B |
|---|---|---|
| GPQA Diamond | 95.6% | 84.8% |
| SimpleQA Verified | 46.5% | — |
| LMArena Expert | 1540 | — |
Multimodal Not comparable
Claude Sonnet 5.5: 51.5 (#6), Qwen3.6 35B-A3B: —
| Benchmark | Claude Sonnet 5.5 | Qwen3.6 35B-A3B |
|---|---|---|
| LMArena Vision | 1289 | — |
| Furniture Assembly | 75% | — |
Multilingual Not comparable
Claude Sonnet 5.5: 55.3 (#30), Qwen3.6 35B-A3B: —
| Benchmark | Claude Sonnet 5.5 | Qwen3.6 35B-A3B |
|---|---|---|
| LMArena Non-English | 1452 | — |
| LMArena Chinese | 1522 | — |
| LMArena Russian | 1451 | — |
Instruction Following Not comparable
Claude Sonnet 5.5: 78.3 (#11), Qwen3.6 35B-A3B: —
| Benchmark | Claude Sonnet 5.5 | Qwen3.6 35B-A3B |
|---|---|---|
| LMArena Instruction Following | 1495 | — |
Long Context Not comparable
Claude Sonnet 5.5: 45.9 (#28), Qwen3.6 35B-A3B: —
| Benchmark | Claude Sonnet 5.5 | Qwen3.6 35B-A3B |
|---|---|---|
| LMArena Longer Query | 1498 | — |
Writing & Preference Not comparable
Claude Sonnet 5.5: 66.0 (#40), Qwen3.6 35B-A3B: —
| Benchmark | Claude Sonnet 5.5 | Qwen3.6 35B-A3B |
|---|---|---|
| LMArena Text | 1471 | — |
| LMArena Creative Writing | 1465 | — |
| LMArena Multi-Turn | 1474 | — |
Frequently asked questions
Is Claude Sonnet 5.5 better than Qwen3.6 35B-A3B?
Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 37.6 on the Noometry Index. Qwen3.6 35B-A3B costs 7.2× less per token, which makes it the better buy when Claude Sonnet 5.5's lead doesn't matter for your workload.
Which is cheaper, Claude Sonnet 5.5 or Qwen3.6 35B-A3B?
Qwen3.6 35B-A3B is cheaper. It lists at $0.25 per million input tokens and $1.49 per million output tokens; Claude Sonnet 5.5 lists at $2 and $10.
Is Claude Sonnet 5.5 or Qwen3.6 35B-A3B better for coding?
Claude Sonnet 5.5 scores higher on coding benchmarks: 67.3 versus 37.2 in the Noometry coding category.
Which has the bigger context window?
Claude Sonnet 5.5 does, with 1M tokens against 262K.
How many benchmarks do Claude Sonnet 5.5 and Qwen3.6 35B-A3B share?
8 benchmarks have published results for both models. Claude Sonnet 5.5 has 32 scored results on Noometry and Qwen3.6 35B-A3B has 14.