# GLM-4.5 vs GPT-5.4 Pro

> GPT-5.4 Pro is the stronger model overall, scoring 58.8 to 41.4 on the Noometry Index. GLM-4.5 costs 68× less per token, which makes it the better buy when GPT-5.4 Pro's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/glm-4-5-vs-gpt-5-4-pro
- Last updated: 2026-10-10
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. GLM-4.5 scores higher in 0 categories and GPT-5.4 Pro in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5.4 Pro leads 71.0 to 27.7.
- The biggest single-benchmark swing is Humanity's Last Exam: 8.3% for GLM-4.5 and 44.3% for GPT-5.4 Pro.
- GLM-4.5 is cheaper at $0.60 / $2.20 per million input/output tokens, against $30 / $180 for GPT-5.4 Pro.
- GPT-5.4 Pro accepts more context: 1.05M tokens versus 131K.
- GLM-4.5 has downloadable open weights; the other is API-only.

## Snapshot

| | GLM-4.5 | GPT-5.4 Pro |
|---|---|---|
| Provider | Z.ai (Zhipu) | OpenAI |
| Noometry Index | 41.4 | 58.8 |
| Rank | 125 | 16 |
| Context | 131K | 1.05M |
| Input $/M | $0.60 | $30 |
| Output $/M | $2.20 | $180 |
| Weights | Open | Proprietary |

## Coding

- GLM-4.5: 41.1 (#121)
- GPT-5.4 Pro: 42.6 (#89)

| Benchmark | GLM-4.5 | GPT-5.4 Pro |
|---|---|---|
| WeirdML | 40.6% | 57.4% |
| SWE-bench Verified (bash only) | 54.2% | — |
| LMArena Coding | 1434 | — |
| ALE-Bench | 344.82 | — |
| AlgoTune | 1.52 | — |

## Reasoning

- GLM-4.5: 27.7 (#99)
- GPT-5.4 Pro: 71.0 (#10)

| Benchmark | GLM-4.5 | GPT-5.4 Pro |
|---|---|---|
| ARC-AGI-2 | — | 83.3% |
| SimpleBench | — | 74.1% |
| Kagi LLM Benchmark | 57.9% | — |
| ARC-AGI-1 | — | 94.5% |
| CritPt | — | 30% |
| Chess Puzzles | — | 58.6% |
| EnigmaEval | — | 23.8% |
| LMArena Hard Prompts | 1430 | — |
| Epoch Capabilities Index | — | 159.12 |

## Math

- GLM-4.5: 36.3 (#119)
- GPT-5.4 Pro: 72.0 (#17)

| Benchmark | GLM-4.5 | GPT-5.4 Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 82.5% |
| FrontierMath Tier 4 | — | 58.5% |
| LMArena Math | 1427 | — |
| FrontierMath (Feb 2025 set) | — | 50% |
| FrontierMath Tier 4 (v1) | — | 37.5% |

## Knowledge

- GLM-4.5: 35.5 (#172)
- GPT-5.4 Pro: 68.3 (#6)

| Benchmark | GLM-4.5 | GPT-5.4 Pro |
|---|---|---|
| Humanity's Last Exam | 8.3% | 44.3% |
| GPQA Diamond | — | 94.6% |
| SimpleQA Verified | — | 46.3% |
| Confabulations | 11.3% | — |
| Vectara Hallucination Rate | — | 8.3% |
| LMArena Expert | 1433 | — |

## Multilingual

- GLM-4.5: 53.0 (#74)
- GPT-5.4 Pro: —

| Benchmark | GLM-4.5 | GPT-5.4 Pro |
|---|---|---|
| LMArena Non-English | 1417 | — |
| LMArena Chinese | 1465 | — |
| LMArena French | 1423 | — |
| LMArena German | 1406 | — |
| LMArena Japanese | 1416 | — |
| LMArena Korean | 1382 | — |
| LMArena Russian | 1414 | — |
| LMArena Spanish | 1454 | — |

## Instruction Following

- GLM-4.5: 74.3 (#100)
- GPT-5.4 Pro: —

| Benchmark | GLM-4.5 | GPT-5.4 Pro |
|---|---|---|
| LMArena Instruction Following | 1405 | — |

## Long Context

- GLM-4.5: 38.2 (#196)
- GPT-5.4 Pro: —

| Benchmark | GLM-4.5 | GPT-5.4 Pro |
|---|---|---|
| Fiction.LiveBench | 58.3% | — |
| LMArena Longer Query | 1413 | — |

## Writing & Preference

- GLM-4.5: 57.7 (#121)
- GPT-5.4 Pro: —

| Benchmark | GLM-4.5 | GPT-5.4 Pro |
|---|---|---|
| LMArena Text | 1430 | — |
| LMArena Creative Writing | 1395 | — |
| Short-Story Creative Writing | 73.4% | — |
| EQ-Bench Creative Writing | 1343 | — |
| LMArena Multi-Turn | 1415 | — |

## FAQ

### Is GLM-4.5 better than GPT-5.4 Pro?

GPT-5.4 Pro is the stronger model overall, scoring 58.8 to 41.4 on the Noometry Index. GLM-4.5 costs 68× less per token, which makes it the better buy when GPT-5.4 Pro's lead doesn't matter for your workload.

### Which is cheaper, GLM-4.5 or GPT-5.4 Pro?

GLM-4.5 is cheaper. It lists at $0.60 per million input tokens and $2.20 per million output tokens; GPT-5.4 Pro lists at $30 and $180.

### Is GLM-4.5 or GPT-5.4 Pro better for coding?

GPT-5.4 Pro scores higher on coding benchmarks: 42.6 versus 41.1 in the Noometry coding category.

### Which has the bigger context window?

GPT-5.4 Pro does, with 1.05M tokens against 131K.

### How many benchmarks do GLM-4.5 and GPT-5.4 Pro share?

2 benchmarks have published results for both models. GLM-4.5 has 27 scored results on Noometry and GPT-5.4 Pro has 16.