# GPT-5 Pro vs Qwen3.5 Plus

> GPT-5 Pro is the stronger model overall, scoring 46.2 to 42.3 on the Noometry Index. Qwen3.5 Plus costs 46× less per token, which makes it the better buy when GPT-5 Pro's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gpt-5-pro-vs-qwen3-5-plus
- Last updated: 2026-10-10
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. GPT-5 Pro scores higher in 3 categories and Qwen3.5 Plus in 0 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5 Pro leads 56.2 to 46.0.
- Qwen3.5 Plus is cheaper at $0.40 / $2.40 per million input/output tokens, against $15 / $120 for GPT-5 Pro.
- Qwen3.5 Plus accepts more context: 1M tokens versus 400K.

## Snapshot

| | GPT-5 Pro | Qwen3.5 Plus |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 46.2 | 42.3 |
| Rank | 58 | 103 |
| Context | 400K | 1M |
| Input $/M | $15 | $0.40 |
| Output $/M | $120 | $2.40 |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-5 Pro: 43.4 (#77)
- Qwen3.5 Plus: —

| Benchmark | GPT-5 Pro | Qwen3.5 Plus |
|---|---|---|
| WeirdML | 60.4% | — |
| ALE-Bench | — | 621.92 |
| AlgoTune | 1.31 | — |

## Agentic & Tool Use

- GPT-5 Pro: —
- Qwen3.5 Plus: —

| Benchmark | GPT-5 Pro | Qwen3.5 Plus |
|---|---|---|
| Vending-Bench 2 | — | 0.54 |

## Reasoning

- GPT-5 Pro: 39.2 (#52)
- Qwen3.5 Plus: 32.0 (#67)

| Benchmark | GPT-5 Pro | Qwen3.5 Plus |
|---|---|---|
| Epoch Capabilities Index | 150.26 | 146.79 |
| ARC-AGI-2 | 18.3% | — |
| SimpleBench | 61.6% | — |
| Kagi LLM Benchmark | 76.8% | — |
| ARC-AGI-1 | 70.2% | — |
| Chess Puzzles | — | 22% |
| EnigmaEval | 18.8% | — |
| Mystery Game Puzzles | — | 17% |
| DTBench | — | 80.5% |
| LMCA | — | 36.4% |

## Math

- GPT-5 Pro: 48.0 (#53)
- Qwen3.5 Plus: 47.9 (#55)

| Benchmark | GPT-5 Pro | Qwen3.5 Plus |
|---|---|---|
| FrontierMath Tier 4 (v1) | 14.6% | 2.1% |
| FrontierMath (Tiers 1-3) | 55.8% | — |
| FrontierMath Tier 4 | 19.5% | — |
| OTIS Mock AIME 2024-2025 | — | 86.7% |
| FrontierMath (Feb 2025 set) | — | 21% |

## Knowledge

- GPT-5 Pro: 56.2 (#39)
- Qwen3.5 Plus: 46.0 (#78)

| Benchmark | GPT-5 Pro | Qwen3.5 Plus |
|---|---|---|
| GPQA Diamond | — | 84.8% |
| Humanity's Last Exam | 31.6% | — |
| SimpleQA Verified | — | 25.4% |
| Vectara Hallucination Rate | — | 10.7% |

## Long Context

- GPT-5 Pro: —
- Qwen3.5 Plus: 42.9 (#109)

| Benchmark | GPT-5 Pro | Qwen3.5 Plus |
|---|---|---|
| CL-bench | — | 19.8% |
| CL-bench Life | — | 12.4% |

## FAQ

### Is GPT-5 Pro better than Qwen3.5 Plus?

GPT-5 Pro is the stronger model overall, scoring 46.2 to 42.3 on the Noometry Index. Qwen3.5 Plus costs 46× less per token, which makes it the better buy when GPT-5 Pro's lead doesn't matter for your workload.

### Which is cheaper, GPT-5 Pro or Qwen3.5 Plus?

Qwen3.5 Plus is cheaper. It lists at $0.40 per million input tokens and $2.40 per million output tokens; GPT-5 Pro lists at $15 and $120.

### Which has the bigger context window?

Qwen3.5 Plus does, with 1M tokens against 400K.

### How many benchmarks do GPT-5 Pro and Qwen3.5 Plus share?

2 benchmarks have published results for both models. GPT-5 Pro has 12 scored results on Noometry and Qwen3.5 Plus has 15.