# GPT-5-Codex vs Qwen3.5 Max Preview

> Qwen3.5 Max Preview is the stronger model overall, scoring 45.3 to 37.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-codex-vs-qwen3-5-max-preview
- Last updated: 2026-10-11
- Shared benchmarks: 0

## Snapshot

| | GPT-5-Codex | Qwen3.5 Max Preview |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 37.9 | 45.3 |
| Rank | 192 | 71 |
| Context | 400K | — |
| Input $/M | $1.25 | — |
| Output $/M | $10 | — |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-5-Codex: 42.4 (#103)
- Qwen3.5 Max Preview: 44.0 (#77)

| Benchmark | GPT-5-Codex | Qwen3.5 Max Preview |
|---|---|---|
| WeirdML | 54.5% | — |
| LMArena Coding | — | 1487 |

## Agentic & Tool Use

- GPT-5-Codex: 31.0 (#72)
- Qwen3.5 Max Preview: —

| Benchmark | GPT-5-Codex | Qwen3.5 Max Preview |
|---|---|---|
| Terminal-Bench | 44.3% | — |

## Reasoning

- GPT-5-Codex: 30.9 (#83)
- Qwen3.5 Max Preview: 30.8 (#84)

| Benchmark | GPT-5-Codex | Qwen3.5 Max Preview |
|---|---|---|
| Kagi LLM Benchmark | 70.3% | — |
| LMArena Hard Prompts | — | 1483 |

## Math

- GPT-5-Codex: —
- Qwen3.5 Max Preview: 40.1 (#94)

| Benchmark | GPT-5-Codex | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Math | — | 1474 |

## Knowledge

- GPT-5-Codex: —
- Qwen3.5 Max Preview: 41.8 (#107)

| Benchmark | GPT-5-Codex | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Expert | — | 1489 |

## Multilingual

- GPT-5-Codex: —
- Qwen3.5 Max Preview: 56.2 (#22)

| Benchmark | GPT-5-Codex | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Non-English | — | 1465 |
| LMArena Chinese | — | 1534 |
| LMArena French | — | 1484 |
| LMArena German | — | 1487 |
| LMArena Japanese | — | 1495 |
| LMArena Korean | — | 1438 |
| LMArena Russian | — | 1471 |
| LMArena Spanish | — | 1470 |

## Instruction Following

- GPT-5-Codex: —
- Qwen3.5 Max Preview: 77.0 (#31)

| Benchmark | GPT-5-Codex | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Instruction Following | — | 1467 |

## Long Context

- GPT-5-Codex: —
- Qwen3.5 Max Preview: 45.2 (#45)

| Benchmark | GPT-5-Codex | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Longer Query | — | 1476 |

## Writing & Preference

- GPT-5-Codex: —
- Qwen3.5 Max Preview: 66.0 (#41)

| Benchmark | GPT-5-Codex | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Text | — | 1470 |
| LMArena Creative Writing | — | 1464 |
| LMArena Multi-Turn | — | 1478 |

## FAQ

### Is GPT-5-Codex better than Qwen3.5 Max Preview?

Qwen3.5 Max Preview is the stronger model overall, scoring 45.3 to 37.9 on the Noometry Index.

### Is GPT-5-Codex or Qwen3.5 Max Preview better for coding?

Qwen3.5 Max Preview scores higher on coding benchmarks: 44.0 versus 42.4 in the Noometry coding category.

### How many benchmarks do GPT-5-Codex and Qwen3.5 Max Preview share?

0 benchmarks have published results for both models. GPT-5-Codex has 3 scored results on Noometry and Qwen3.5 Max Preview has 17.