# GLM-5 vs GPT-5 Pro

> GLM-5 and GPT-5 Pro score almost the same on the Noometry Index (45.9 vs 46.2), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/glm-5-vs-gpt-5-pro
- Last updated: 2026-10-10
- Shared benchmarks: 7

## Summary

- They share 7 benchmarks with published results for both. GLM-5 scores higher in 1 category and GPT-5 Pro in 3 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5 Pro leads 39.2 to 27.6.
- The biggest single-benchmark swing is ARC-AGI-1: 44.7% for GLM-5 and 70.2% for GPT-5 Pro.
- GLM-5 is cheaper at $1 / $3.20 per million input/output tokens, against $15 / $120 for GPT-5 Pro.
- GPT-5 Pro accepts more context: 400K tokens versus 205K.
- GLM-5 has downloadable open weights; the other is API-only.

## Snapshot

| | GLM-5 | GPT-5 Pro |
|---|---|---|
| Provider | Z.ai (Zhipu) | OpenAI |
| Noometry Index | 45.9 | 46.2 |
| Rank | 59 | 58 |
| Context | 205K | 400K |
| Input $/M | $1 | $15 |
| Output $/M | $3.20 | $120 |
| Weights | Open | Proprietary |

## Coding

- GLM-5: 49.0 (#47)
- GPT-5 Pro: 43.4 (#77)

| Benchmark | GLM-5 | GPT-5 Pro |
|---|---|---|
| WeirdML | 48.2% | 60.4% |
| SWE-bench Verified | 72.1% | — |
| SWE-bench Verified (bash only) | 72.8% | — |
| LMArena WebDev | 1434 | — |
| SWE-bench Multilingual | 69.7% | — |
| LMArena Coding | 1461 | — |
| ALE-Bench | 765.62 | — |
| AlgoTune | — | 1.31 |

## Agentic & Tool Use

- GLM-5: 30.9 (#65)
- GPT-5 Pro: —

| Benchmark | GLM-5 | GPT-5 Pro |
|---|---|---|
| Terminal-Bench | 52.4% | — |
| τ²-bench Airline | 82.5% | — |
| τ²-bench Banking | 9.8% | — |
| τ²-bench Retail | 73.7% | — |
| τ²-bench Telecom | 86.8% | — |
| Vending-Bench 2 | 4,432 | — |

## Reasoning

- GLM-5: 27.6 (#100)
- GPT-5 Pro: 39.2 (#52)

| Benchmark | GLM-5 | GPT-5 Pro |
|---|---|---|
| ARC-AGI-2 | 4.9% | 18.3% |
| SimpleBench | 53.2% | 61.6% |
| Kagi LLM Benchmark | 75% | 76.8% |
| ARC-AGI-1 | 44.7% | 70.2% |
| Epoch Capabilities Index | 145.84 | 150.26 |
| NYT Connections (extended) | 74.8% | — |
| Chess Puzzles | 10% | — |
| EnigmaEval | — | 18.8% |
| LMArena Hard Prompts | 1451 | — |
| ForecastBench | 61 | — |

## Math

- GLM-5: 44.8 (#66)
- GPT-5 Pro: 48.0 (#53)

| Benchmark | GLM-5 | GPT-5 Pro |
|---|---|---|
| FrontierMath Tier 4 (v1) | 2.1% | 14.6% |
| FrontierMath (Tiers 1-3) | — | 55.8% |
| FrontierMath Tier 4 | — | 19.5% |
| MathArena Final-Answer Competitions | 65.7% | — |
| OTIS Mock AIME 2024-2025 | 80% | — |
| LMArena Math | 1440 | — |
| FrontierMath (Feb 2025 set) | 16.4% | — |

## Knowledge

- GLM-5: 52.2 (#59)
- GPT-5 Pro: 56.2 (#39)

| Benchmark | GLM-5 | GPT-5 Pro |
|---|---|---|
| GPQA Diamond | 87.8% | — |
| Humanity's Last Exam | — | 31.6% |
| Vectara Hallucination Rate | 10.1% | — |
| LMArena Expert | 1454 | — |

## Multilingual

- GLM-5: 53.9 (#57)
- GPT-5 Pro: —

| Benchmark | GLM-5 | GPT-5 Pro |
|---|---|---|
| LMArena Non-English | 1430 | — |
| LMArena Chinese | 1511 | — |
| LMArena French | 1455 | — |
| LMArena German | 1445 | — |
| LMArena Japanese | 1416 | — |
| LMArena Korean | 1421 | — |
| LMArena Russian | 1436 | — |
| LMArena Spanish | 1452 | — |

## Instruction Following

- GLM-5: 75.4 (#64)
- GPT-5 Pro: —

| Benchmark | GLM-5 | GPT-5 Pro |
|---|---|---|
| LMArena Instruction Following | 1427 | — |

## Long Context

- GLM-5: 44.6 (#58)
- GPT-5 Pro: —

| Benchmark | GLM-5 | GPT-5 Pro |
|---|---|---|
| CL-bench | 18.7% | — |
| LMArena Longer Query | 1446 | — |

## Writing & Preference

- GLM-5: 66.2 (#38)
- GPT-5 Pro: —

| Benchmark | GLM-5 | GPT-5 Pro |
|---|---|---|
| LMArena Text | 1446 | — |
| LMArena Creative Writing | 1438 | — |
| EQ-Bench Creative Writing | 1601 | — |
| LMArena Multi-Turn | 1456 | — |

## FAQ

### Is GLM-5 better than GPT-5 Pro?

GLM-5 and GPT-5 Pro score almost the same on the Noometry Index (45.9 vs 46.2), so choose on price, context window or the category you care about most.

### Which is cheaper, GLM-5 or GPT-5 Pro?

GLM-5 is cheaper. It lists at $1 per million input tokens and $3.20 per million output tokens; GPT-5 Pro lists at $15 and $120.

### Is GLM-5 or GPT-5 Pro better for coding?

GLM-5 scores higher on coding benchmarks: 49.0 versus 43.4 in the Noometry coding category.

### Which has the bigger context window?

GPT-5 Pro does, with 400K tokens against 205K.

### How many benchmarks do GLM-5 and GPT-5 Pro share?

7 benchmarks have published results for both models. GLM-5 has 45 scored results on Noometry and GPT-5 Pro has 12.