# GLM-5V-Turbo vs GPT-5.3 Codex

> GPT-5.3 Codex is the stronger model overall, scoring 45.8 to 43.8 on the Noometry Index. GLM-5V-Turbo costs 2.5× less per token, which makes it the better buy when GPT-5.3 Codex's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/glm-5v-turbo-vs-gpt-5-3-codex
- Last updated: 2026-10-12
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. GLM-5V-Turbo scores higher in 0 categories and GPT-5.3 Codex in 1 category; one gap is clear of the uncertainty.
- The widest gap is in coding, where GPT-5.3 Codex leads 48.6 to 42.1.
- GLM-5V-Turbo is cheaper at $1.20 / $4 per million input/output tokens, against $1.75 / $14 for GPT-5.3 Codex.
- GPT-5.3 Codex accepts more context: 400K tokens versus 200K.

## Snapshot

| | GLM-5V-Turbo | GPT-5.3 Codex |
|---|---|---|
| Provider | Z.ai (Zhipu) | OpenAI |
| Noometry Index | 43.8 | 45.8 |
| Rank | 84 | 69 |
| Context | 200K | 400K |
| Input $/M | $1.20 | $1.75 |
| Output $/M | $4 | $14 |
| Weights | Proprietary | Proprietary |

## Coding

- GLM-5V-Turbo: 42.1 (#111)
- GPT-5.3 Codex: 48.6 (#56)

| Benchmark | GLM-5V-Turbo | GPT-5.3 Codex |
|---|---|---|
| LMArena WebDev | 1401 | 1409 |
| SWE-bench Verified | — | 74.8% |
| WeirdML | — | 79.3% |
| LMArena Coding | 1466 | — |
| ALE-Bench | — | 1,655 |

## Agentic & Tool Use

- GLM-5V-Turbo: —
- GPT-5.3 Codex: 48.0 (#9)

| Benchmark | GLM-5V-Turbo | GPT-5.3 Codex |
|---|---|---|
| Terminal-Bench | — | 78.4% |
| METR Time Horizons | — | 74.5% |
| Vending-Bench 2 | — | 5,940 |

## Reasoning

- GLM-5V-Turbo: 29.7 (#89)
- GPT-5.3 Codex: —

| Benchmark | GLM-5V-Turbo | GPT-5.3 Codex |
|---|---|---|
| LMArena Hard Prompts | 1443 | — |
| Epoch Capabilities Index | — | 156.77 |

## Math

- GLM-5V-Turbo: 39.4 (#106)
- GPT-5.3 Codex: —

| Benchmark | GLM-5V-Turbo | GPT-5.3 Codex |
|---|---|---|
| LMArena Math | 1441 | — |

## Knowledge

- GLM-5V-Turbo: 40.6 (#117)
- GPT-5.3 Codex: —

| Benchmark | GLM-5V-Turbo | GPT-5.3 Codex |
|---|---|---|
| LMArena Expert | 1452 | — |

## Multimodal

- GLM-5V-Turbo: 40.9 (#42)
- GPT-5.3 Codex: —

| Benchmark | GLM-5V-Turbo | GPT-5.3 Codex |
|---|---|---|
| LMArena Vision | 1264 | — |
| LMArena Document | 1416 | — |

## Multilingual

- GLM-5V-Turbo: 53.0 (#73)
- GPT-5.3 Codex: —

| Benchmark | GLM-5V-Turbo | GPT-5.3 Codex |
|---|---|---|
| LMArena Non-English | 1420 | — |
| LMArena Chinese | 1488 | — |
| LMArena French | 1444 | — |
| LMArena German | 1423 | — |
| LMArena Korean | 1396 | — |
| LMArena Russian | 1431 | — |
| LMArena Spanish | 1450 | — |

## Instruction Following

- GLM-5V-Turbo: 75.0 (#80)
- GPT-5.3 Codex: —

| Benchmark | GLM-5V-Turbo | GPT-5.3 Codex |
|---|---|---|
| LMArena Instruction Following | 1423 | — |

## Long Context

- GLM-5V-Turbo: 44.0 (#80)
- GPT-5.3 Codex: —

| Benchmark | GLM-5V-Turbo | GPT-5.3 Codex |
|---|---|---|
| LMArena Longer Query | 1438 | — |

## Writing & Preference

- GLM-5V-Turbo: 62.5 (#73)
- GPT-5.3 Codex: —

| Benchmark | GLM-5V-Turbo | GPT-5.3 Codex |
|---|---|---|
| LMArena Text | 1437 | — |
| LMArena Creative Writing | 1416 | — |
| LMArena Multi-Turn | 1432 | — |

## FAQ

### Is GLM-5V-Turbo better than GPT-5.3 Codex?

GPT-5.3 Codex is the stronger model overall, scoring 45.8 to 43.8 on the Noometry Index. GLM-5V-Turbo costs 2.5× less per token, which makes it the better buy when GPT-5.3 Codex's lead doesn't matter for your workload.

### Which is cheaper, GLM-5V-Turbo or GPT-5.3 Codex?

GLM-5V-Turbo is cheaper. It lists at $1.20 per million input tokens and $4 per million output tokens; GPT-5.3 Codex lists at $1.75 and $14.

### Is GLM-5V-Turbo or GPT-5.3 Codex better for coding?

GPT-5.3 Codex scores higher on coding benchmarks: 48.6 versus 42.1 in the Noometry coding category.

### Which has the bigger context window?

GPT-5.3 Codex does, with 400K tokens against 200K.

### How many benchmarks do GLM-5V-Turbo and GPT-5.3 Codex share?

1 benchmark has published results for both models. GLM-5V-Turbo has 19 scored results on Noometry and GPT-5.3 Codex has 8.