Model comparison
o1-mini vs Qwen3.5-Flash
Qwen3.5-Flash is the stronger model overall, scoring 42.5 to 34.0 on the Noometry Index.
Last verified . 21 shared benchmarks.
Summary
- They share 21 benchmarks with published results for both. o1-mini scores higher in 1 category and Qwen3.5-Flash in 7 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Qwen3.5-Flash leads 33.7 to 8.8.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 46.9% for o1-mini and 84.4% for Qwen3.5-Flash.
Side by side
| o1-mini | Qwen3.5-Flash | |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 34.0 | 42.5 |
| Released | 2024-09-12 | 2026-02-23 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1M |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.10 |
| Output $ / M tokens | — | $0.40 |
| Results tracked | 39 | 32 |
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Category by category
Coding o1-mini leads
o1-mini: 35.5 (#224), Qwen3.5-Flash: 34.2 (#242)
| Benchmark | o1-mini | Qwen3.5-Flash |
|---|---|---|
| LMArena Coding | 1362 | 1412 |
| Aider Polyglot | 32.9% | — |
| LMArena WebDev | — | 1244 |
| WeirdML | 36.3% | — |
| LiveBench Coding | 48% | — |
| ALE-Bench | — | 221.8 |
| HumanEval+ | 89% | — |
| MBPP+ | 78.8% | — |
Agentic & Tool Use Not comparable
o1-mini: 24.6 (#118), Qwen3.5-Flash: —
| Benchmark | o1-mini | Qwen3.5-Flash |
|---|---|---|
| Cybench | 10% | — |
| Vending-Bench 2 | — | 462.69 |
Reasoning Qwen3.5-Flash leads
o1-mini: 8.8 (#346), Qwen3.5-Flash: 33.7 (#72)
| Benchmark | o1-mini | Qwen3.5-Flash |
|---|---|---|
| LMArena Hard Prompts | 1333 | 1403 |
| Epoch Capabilities Index | 135.82 | 143.98 |
| ARC-AGI-2 | 0.8% | — |
| SimpleBench | 18.1% | — |
| ARC-AGI-1 | 14% | — |
| Chess Puzzles | — | 21% |
| LiveBench Reasoning | 72.3% | — |
| Mystery Game Puzzles | — | 20% |
| DTBench | — | 82.9% |
| LiveBench Data Analysis | 57.9% | — |
| LMCA | — | 29.1% |
| LiveBench | 57.8% | — |
Math Qwen3.5-Flash leads
o1-mini: 35.4 (#186), Qwen3.5-Flash: 37.4 (#158)
| Benchmark | o1-mini | Qwen3.5-Flash |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 46.9% | 84.4% |
| LMArena Math | 1358 | 1407 |
| FrontierMath (Feb 2025 set) | 1.7% | 6.2% |
| FrontierMath (Tiers 1-3) | — | 18.2% |
| LiveBench Math | 62% | — |
| MATH Level 5 | 89.2% | — |
| FrontierMath Tier 4 (v1) | — | 0% |
Knowledge Qwen3.5-Flash leads
o1-mini: 34.9 (#192), Qwen3.5-Flash: 43.2 (#93)
| Benchmark | o1-mini | Qwen3.5-Flash |
|---|---|---|
| GPQA Diamond | 62.4% | 82.3% |
| LMArena Expert | 1316 | 1407 |
| SimpleQA Verified | — | 20.3% |
| Confabulations | 18.6% | — |
| Vectara Hallucination Rate | — | 10.5% |
Multilingual Qwen3.5-Flash leads
o1-mini: 43.6 (#182), Qwen3.5-Flash: 50.5 (#121)
| Benchmark | o1-mini | Qwen3.5-Flash |
|---|---|---|
| LMArena Non-English | 1289 | 1385 |
| LMArena Chinese | 1314 | 1446 |
| LMArena French | 1293 | 1412 |
| LMArena German | 1278 | 1390 |
| LMArena Japanese | 1245 | 1368 |
| LMArena Korean | 1223 | 1344 |
| LMArena Russian | 1283 | 1379 |
| LMArena Spanish | 1303 | 1400 |
Instruction Following Qwen3.5-Flash leads
o1-mini: 66.7 (#206), Qwen3.5-Flash: 72.6 (#139)
| Benchmark | o1-mini | Qwen3.5-Flash |
|---|---|---|
| LMArena Instruction Following | 1304 | 1374 |
| LiveBench Instruction Following | 65.4% | — |
Long Context Qwen3.5-Flash leads
o1-mini: 40.1 (#161), Qwen3.5-Flash: 42.4 (#124)
| Benchmark | o1-mini | Qwen3.5-Flash |
|---|---|---|
| LMArena Longer Query | 1320 | 1392 |
Writing & Preference Qwen3.5-Flash leads
o1-mini: 48.4 (#202), Qwen3.5-Flash: 57.9 (#122)
| Benchmark | o1-mini | Qwen3.5-Flash |
|---|---|---|
| LMArena Text | 1317 | 1397 |
| LMArena Creative Writing | 1244 | 1343 |
| LMArena Multi-Turn | 1314 | 1393 |
| Short-Story Creative Writing | 64.9% | — |
| LiveBench Language | 40.9% | — |
Frequently asked questions
Is o1-mini better than Qwen3.5-Flash?
Qwen3.5-Flash is the stronger model overall, scoring 42.5 to 34.0 on the Noometry Index.
Is o1-mini or Qwen3.5-Flash better for coding?
o1-mini scores higher on coding benchmarks: 35.5 versus 34.2 in the Noometry coding category.
How many benchmarks do o1-mini and Qwen3.5-Flash share?
21 benchmarks have published results for both models. o1-mini has 39 scored results on Noometry and Qwen3.5-Flash has 32.