Model comparison
Claude 2.1 vs Qwen3.5-9B
Qwen3.5-9B is the stronger model overall, scoring 33.8 to 25.2 on the Noometry Index.
Last verified . 4 shared benchmarks.
Alibaba (Qwen)Summary
- They share 4 benchmarks with published results for both. Claude 2.1 scores higher in 0 categories and Qwen3.5-9B in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Qwen3.5-9B leads 46.0 to 15.4.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 1.9% for Claude 2.1 and 61.7% for Qwen3.5-9B.
- Qwen3.5-9B has downloadable open weights; the other is API-only.
Side by side
| Claude 2.1 | Qwen3.5-9B | |
|---|---|---|
| Provider | Anthropic | Alibaba (Qwen) |
| Noometry Index | 25.2 | 33.8 |
| Released | 2023-11-21 | 2026-02-23 |
| Weights | Proprietary | Open |
| Context window | — | 262K |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.10 |
| Output $ / M tokens | — | $0.15 |
| Results tracked | 7 | 10 |
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Category by category
Coding Qwen3.5-9B leads
Claude 2.1: 26.2 (#327), Qwen3.5-9B: 35.9 (#217)
Agentic & Tool Use Not comparable
Claude 2.1: —, Qwen3.5-9B: 14.5 (#151)
| Benchmark | Claude 2.1 | Qwen3.5-9B |
|---|---|---|
| Terminal-Bench | — | 9.2% |
Reasoning Qwen3.5-9B leads
Claude 2.1: 21.4 (#221), Qwen3.5-9B: 23.1 (#182)
| Benchmark | Claude 2.1 | Qwen3.5-9B |
|---|---|---|
| DTBench | 51% | 71.2% |
| Epoch Capabilities Index | 119.27 | 139.46 |
| CritPt | — | 0.3% |
| Chess Puzzles | — | 12% |
| LMCA | — | 24.5% |
| ForecastBench | 54.2 | — |
Math Qwen3.5-9B leads
Claude 2.1: 10.2 (#315), Qwen3.5-9B: 34.8 (#192)
| Benchmark | Claude 2.1 | Qwen3.5-9B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 1.9% | 61.7% |
| MathArena Final-Answer Competitions | — | 48.5% |
Knowledge Qwen3.5-9B leads
Claude 2.1: 15.4 (#292), Qwen3.5-9B: 46.0 (#84)
| Benchmark | Claude 2.1 | Qwen3.5-9B |
|---|---|---|
| GPQA Diamond | 33% | 79% |
| MMLU | 73.5% | — |
Frequently asked questions
Is Claude 2.1 better than Qwen3.5-9B?
Qwen3.5-9B is the stronger model overall, scoring 33.8 to 25.2 on the Noometry Index.
Is Claude 2.1 or Qwen3.5-9B better for coding?
Qwen3.5-9B scores higher on coding benchmarks: 35.9 versus 26.2 in the Noometry coding category.
How many benchmarks do Claude 2.1 and Qwen3.5-9B share?
4 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and Qwen3.5-9B has 10.