Model comparison
o1-mini vs Qwen3.5 27B
Qwen3.5 27B is the stronger model overall, scoring 41.9 to 34.0 on the Noometry Index.
Last verified . 18 shared benchmarks.
Summary
- They share 18 benchmarks with published results for both. o1-mini scores higher in 0 categories and Qwen3.5 27B in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Qwen3.5 27B leads 27.5 to 8.8.
- Qwen3.5 27B has downloadable open weights; the other is API-only.
Side by side
| o1-mini | Qwen3.5 27B | |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 34.0 | 41.9 |
| Released | 2024-09-12 | 2026-02-23 |
| Weights | Proprietary | Open |
| Context window | — | 262K |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.30 |
| Output $ / M tokens | — | $2.40 |
| Results tracked | 39 | 28 |
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Category by category
Coding Qwen3.5 27B leads
o1-mini: 35.5 (#224), Qwen3.5 27B: 38.9 (#168)
| Benchmark | o1-mini | Qwen3.5 27B |
|---|---|---|
| WeirdML | 36.3% | 39.5% |
| LMArena Coding | 1362 | 1427 |
| Aider Polyglot | 32.9% | — |
| LMArena WebDev | — | 1358 |
| LiveBench Coding | 48% | — |
| ALE-Bench | — | 349.45 |
| HumanEval+ | 89% | — |
| MBPP+ | 78.8% | — |
Agentic & Tool Use Not comparable
o1-mini: 24.6 (#118), Qwen3.5 27B: —
| Benchmark | o1-mini | Qwen3.5 27B |
|---|---|---|
| Cybench | 10% | — |
| Vending-Bench 2 | — | 201.98 |
Reasoning Qwen3.5 27B leads
o1-mini: 8.8 (#346), Qwen3.5 27B: 27.5 (#117)
| Benchmark | o1-mini | Qwen3.5 27B |
|---|---|---|
| LMArena Hard Prompts | 1333 | 1414 |
| ARC-AGI-2 | 0.8% | — |
| SimpleBench | 18.1% | — |
| NYT Connections (extended) | — | 47.9% |
| ARC-AGI-1 | 14% | — |
| Thematic Generalization | — | 45.5% |
| LiveBench Reasoning | 72.3% | — |
| DTBench | — | 82.4% |
| LiveBench Data Analysis | 57.9% | — |
| LMCA | — | 34% |
| Epoch Capabilities Index | 135.82 | — |
| LiveBench | 57.8% | — |
Math Qwen3.5 27B leads
o1-mini: 35.4 (#186), Qwen3.5 27B: 38.8 (#127)
| Benchmark | o1-mini | Qwen3.5 27B |
|---|---|---|
| LMArena Math | 1358 | 1429 |
| MathArena Final-Answer Competitions | — | 56.7% |
| OTIS Mock AIME 2024-2025 | 46.9% | — |
| LiveBench Math | 62% | — |
| MATH Level 5 | 89.2% | — |
| FrontierMath (Feb 2025 set) | 1.7% | — |
Knowledge Qwen3.5 27B leads
o1-mini: 34.9 (#192), Qwen3.5 27B: 38.0 (#150)
| Benchmark | o1-mini | Qwen3.5 27B |
|---|---|---|
| LMArena Expert | 1316 | 1428 |
| GPQA Diamond | 62.4% | — |
| Confabulations | 18.6% | — |
| Vectara Hallucination Rate | — | 12.1% |
Multimodal Not comparable
o1-mini: —, Qwen3.5 27B: 39.4 (#59)
| Benchmark | o1-mini | Qwen3.5 27B |
|---|---|---|
| LMArena Vision | — | 1241 |
Multilingual Qwen3.5 27B leads
o1-mini: 43.6 (#182), Qwen3.5 27B: 50.8 (#115)
| Benchmark | o1-mini | Qwen3.5 27B |
|---|---|---|
| LMArena Non-English | 1289 | 1390 |
| LMArena Chinese | 1314 | 1478 |
| LMArena French | 1293 | 1410 |
| LMArena German | 1278 | 1393 |
| LMArena Japanese | 1245 | 1345 |
| LMArena Korean | 1223 | 1358 |
| LMArena Russian | 1283 | 1390 |
| LMArena Spanish | 1303 | 1407 |
Instruction Following Qwen3.5 27B leads
o1-mini: 66.7 (#206), Qwen3.5 27B: 73.5 (#119)
| Benchmark | o1-mini | Qwen3.5 27B |
|---|---|---|
| LMArena Instruction Following | 1304 | 1393 |
| LiveBench Instruction Following | 65.4% | — |
Long Context Qwen3.5 27B leads
o1-mini: 40.1 (#161), Qwen3.5 27B: 43.1 (#106)
| Benchmark | o1-mini | Qwen3.5 27B |
|---|---|---|
| LMArena Longer Query | 1320 | 1413 |
Writing & Preference Qwen3.5 27B leads
o1-mini: 48.4 (#202), Qwen3.5 27B: 59.3 (#111)
| Benchmark | o1-mini | Qwen3.5 27B |
|---|---|---|
| LMArena Text | 1317 | 1409 |
| LMArena Creative Writing | 1244 | 1362 |
| LMArena Multi-Turn | 1314 | 1410 |
| Short-Story Creative Writing | 64.9% | — |
| LiveBench Language | 40.9% | — |
Frequently asked questions
Is o1-mini better than Qwen3.5 27B?
Qwen3.5 27B is the stronger model overall, scoring 41.9 to 34.0 on the Noometry Index.
Is o1-mini or Qwen3.5 27B better for coding?
Qwen3.5 27B scores higher on coding benchmarks: 38.9 versus 35.5 in the Noometry coding category.
How many benchmarks do o1-mini and Qwen3.5 27B share?
18 benchmarks have published results for both models. o1-mini has 39 scored results on Noometry and Qwen3.5 27B has 28.