# o1 vs Qwen3.5 Plus

> Side-by-side benchmark comparison for o1 and Qwen3.5 Plus across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/o1-vs-qwen3-5-plus
- Last updated: September 28, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Evidence is too thin for a benchmark verdict: o1 and Qwen3.5 Plus share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Qwen3.5 Plus has the lower published output-token price.
- Qwen3.5 Plus has the larger published context window at 1M.

## Model Snapshot

| Property | o1 | Qwen3.5 Plus |
|----------|----------|----------|
| Creator | OpenAI | Alibaba |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 200K | 1M |
| Independent public score (not head-to-head) | 37.57 | 48.92 |
| Benchmarks Covered | 4 | 4 |
| Pricing (input/output) | $15.00 / $60.00 | $0.40 / $2.40 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- o1 public-lane score: Coming soon
- Qwen3.5 Plus public-lane score: Coming soon

| Benchmark | o1 | Qwen3.5 Plus | Winner |
|-----------|-----------|-----------|--------|
| JobBench | Coming soon | 18.5% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- o1 public-lane score: 30.5 (Estimated · #91/142)
- Qwen3.5 Plus public-lane score: Coming soon

| Benchmark | o1 | Qwen3.5 Plus | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | Coming soon | 15.74% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- o1 public-lane score: 67 (Unranked · 2 rankable rows)
- Qwen3.5 Plus public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- o1 public-lane score: 40.9 (Supported · #95/168)
- Qwen3.5 Plus public-lane score: Coming soon

| Benchmark | o1 | Qwen3.5 Plus | Winner |
|-----------|-----------|-----------|--------|
| MMLU | 91.8% | Coming soon | Coming soon |
| GPQA | 75.7% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- o1 public-lane score: 84.5 (#40/124)
- Qwen3.5 Plus public-lane score: Coming soon

| Benchmark | o1 | Qwen3.5 Plus | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 92.2% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- o1 public-lane score: 32.5 (Unranked · 1 rankable row)
- Qwen3.5 Plus public-lane score: 39.3 (Unranked · 2 rankable rows)

| Benchmark | o1 | Qwen3.5 Plus | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 9.310% | 21.034% | Qwen3.5 Plus |
| FrontierMath v2 (Tier 4) | Coming soon | 2.083% | Coming soon |

## FAQ

### Is there enough evidence to pick between o1 and Qwen3.5 Plus?

Not yet. The models share only 1 sourced benchmark row, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [o1 vs o1-preview](/compare/o1-vs-o1-preview)
- [Qwen3.5 Plus vs o1-preview](/compare/o1-preview-vs-qwen3-5-plus)
- [o1 vs o1-pro](/compare/o1-vs-o1-pro)
- [Qwen3.5 Plus vs o1-pro](/compare/o1-pro-vs-qwen3-5-plus)

## Explore More

- [o1 profile](/models/o1)
- [Qwen3.5 Plus profile](/models/qwen3-5-plus)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)