# 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.

- Canonical page: https://noometry.com/compare/o3-pro-vs-qwen3-5-35b-a3b
- Last updated: 2026-10-12
- Shared benchmarks: 4

## 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.

## Snapshot

| | o3-pro | Qwen3.5 35B-A3B |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 42.9 | 42.0 |
| Rank | 105 | 123 |
| Context | 200K | 262K |
| Input $/M | $20 | $0.25 |
| Output $/M | $80 | $2 |
| Weights | Proprietary | Open |

## Coding

- 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

- 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

- 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

- 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

- 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

- o3-pro: —
- Qwen3.5 35B-A3B: 72.8 (#128)

| Benchmark | o3-pro | Qwen3.5 35B-A3B |
|---|---|---|
| LMArena Instruction Following | — | 1379 |

## Long Context

- 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

- 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 |

## FAQ

### 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.