Model comparison
o3-pro vs Qwen3.5 35B-A3B
o3-pro and Qwen3.5 35B-A3B score almost the same on the Noometry Index (42.9 vs 42.0), so choose on price, context window or the category you care about most.
Last verified . 4 shared benchmarks.
Alibaba (Qwen)Summary
- They share 4 benchmarks with published results for both. o3-pro scores higher in 2 categories and Qwen3.5 35B-A3B in 3 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in long context, where o3-pro leads 72.2 to 42.4.
- The biggest single-benchmark swing is Vectara Hallucination Rate: 23.3% for o3-pro and 10.5% for Qwen3.5 35B-A3B.
- Qwen3.5 35B-A3B is cheaper at $0.25 / $2 per million input/output tokens, against $20 / $80 for o3-pro.
- Qwen3.5 35B-A3B accepts more context: 262K tokens versus 200K.
- Qwen3.5 35B-A3B has downloadable open weights; the other is API-only.
Side by side
| o3-pro | Qwen3.5 35B-A3B | |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 42.9 | 42.0 |
| Released | 2025-06-10 | 2026-02-01 |
| Weights | Proprietary | Open |
| Context window | 200K | 262K |
| Max output | 100K | 66K |
| Input $ / M tokens | $20 | $0.25 |
| Output $ / M tokens | $80 | $2 |
| Results tracked | 12 | 28 |
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Category by category
Coding o3-pro leads
o3-pro: 55.5 (#24), Qwen3.5 35B-A3B: 33.8 (#251)
| Benchmark | o3-pro | Qwen3.5 35B-A3B |
|---|---|---|
| Aider Polyglot | 84.9% | — |
| LMArena WebDev | — | 1254 |
| SciCode | — | 29.3% |
| WeirdML | 58.2% | — |
| LMArena Coding | — | 1410 |
Reasoning Too close to call
o3-pro: 23.8 (#171), Qwen3.5 35B-A3B: 24.6 (#161)
| Benchmark | o3-pro | Qwen3.5 35B-A3B |
|---|---|---|
| DTBench | 86.9% | 80% |
| LMCA | 38.5% | 29.5% |
| Epoch Capabilities Index | 147.42 | 142.52 |
| ARC-AGI-2 | 4.9% | — |
| Kagi LLM Benchmark | 72.1% | — |
| ARC-AGI-1 | 59.3% | — |
| CritPt | — | 0.6% |
| Chess Puzzles | — | 10% |
| LMArena Hard Prompts | — | 1400 |
Math Not comparable
o3-pro: —, Qwen3.5 35B-A3B: 39.9 (#97)
| Benchmark | o3-pro | Qwen3.5 35B-A3B |
|---|---|---|
| MathArena Final-Answer Competitions | — | 56% |
| OTIS Mock AIME 2024-2025 | — | 70% |
| LMArena Math | — | 1404 |
Knowledge Qwen3.5 35B-A3B leads
o3-pro: 29.5 (#238), Qwen3.5 35B-A3B: 47.8 (#79)
| Benchmark | o3-pro | Qwen3.5 35B-A3B |
|---|---|---|
| Vectara Hallucination Rate | 23.3% | 10.5% |
| GPQA Diamond | — | 83.5% |
| Confabulations | 14.2% | — |
| LMArena Expert | — | 1408 |
Multilingual Not comparable
o3-pro: —, Qwen3.5 35B-A3B: 50.0 (#127)
| Benchmark | o3-pro | Qwen3.5 35B-A3B |
|---|---|---|
| LMArena Non-English | — | 1378 |
| LMArena Chinese | — | 1457 |
| LMArena French | — | 1412 |
| LMArena German | — | 1367 |
| LMArena Japanese | — | 1325 |
| LMArena Korean | — | 1356 |
| LMArena Russian | — | 1376 |
| LMArena Spanish | — | 1392 |
Instruction Following Not comparable
o3-pro: —, Qwen3.5 35B-A3B: 72.8 (#128)
| Benchmark | o3-pro | Qwen3.5 35B-A3B |
|---|---|---|
| LMArena Instruction Following | — | 1379 |
Long Context o3-pro leads
o3-pro: 72.2 (#1), Qwen3.5 35B-A3B: 42.4 (#127)
| Benchmark | o3-pro | Qwen3.5 35B-A3B |
|---|---|---|
| Fiction.LiveBench | 97.2% | — |
| LMArena Longer Query | — | 1389 |
Writing & Preference Too close to call
o3-pro: 57.1 (#133), Qwen3.5 35B-A3B: 57.9 (#124)
| Benchmark | o3-pro | Qwen3.5 35B-A3B |
|---|---|---|
| LMArena Text | — | 1395 |
| LMArena Creative Writing | — | 1346 |
| Short-Story Creative Writing | 84.4% | — |
| LMArena Multi-Turn | — | 1390 |
Frequently asked questions
Is o3-pro better than Qwen3.5 35B-A3B?
o3-pro and Qwen3.5 35B-A3B score almost the same on the Noometry Index (42.9 vs 42.0), so choose on price, context window or the category you care about most.
Which is cheaper, o3-pro or Qwen3.5 35B-A3B?
Qwen3.5 35B-A3B is cheaper. It lists at $0.25 per million input tokens and $2 per million output tokens; o3-pro lists at $20 and $80.
Is o3-pro or Qwen3.5 35B-A3B better for coding?
o3-pro scores higher on coding benchmarks: 55.5 versus 33.8 in the Noometry coding category.
Which has the bigger context window?
Qwen3.5 35B-A3B does, with 262K tokens against 200K.
How many benchmarks do o3-pro and Qwen3.5 35B-A3B share?
4 benchmarks have published results for both models. o3-pro has 12 scored results on Noometry and Qwen3.5 35B-A3B has 28.