# GLM-4.5-Air vs o1-mini

> GLM-4.5-Air is the stronger model overall, scoring 38.9 to 34.0 on the Noometry Index.

- Canonical page: https://noometry.com/compare/glm-4-5-air-vs-o1-mini
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. GLM-4.5-Air scores higher in 7 categories and o1-mini in 1 category; 6 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GLM-4.5-Air leads 24.1 to 8.8.
- GLM-4.5-Air has downloadable open weights; the other is API-only.

## Snapshot

| | GLM-4.5-Air | o1-mini |
|---|---|---|
| Provider | Z.ai (Zhipu) | OpenAI |
| Noometry Index | 38.9 | 34.0 |
| Rank | 177 | 235 |
| Context | 131K | — |
| Input $/M | $0.20 | — |
| Output $/M | $1.10 | — |
| Weights | Open | Proprietary |

## Coding

- GLM-4.5-Air: 33.3 (#259)
- o1-mini: 35.5 (#224)

| Benchmark | GLM-4.5-Air | o1-mini |
|---|---|---|
| LMArena Coding | 1397 | 1362 |
| Aider Polyglot | — | 32.9% |
| GSO | 2.9% | — |
| WeirdML | — | 36.3% |
| LiveBench Coding | — | 48% |
| HumanEval+ | — | 89% |
| MBPP+ | — | 78.8% |

## Agentic & Tool Use

- GLM-4.5-Air: —
- o1-mini: 24.6 (#118)

| Benchmark | GLM-4.5-Air | o1-mini |
|---|---|---|
| Cybench | — | 10% |

## Reasoning

- GLM-4.5-Air: 24.1 (#166)
- o1-mini: 8.8 (#346)

| Benchmark | GLM-4.5-Air | o1-mini |
|---|---|---|
| LMArena Hard Prompts | 1379 | 1333 |
| ARC-AGI-2 | — | 0.8% |
| SimpleBench | — | 18.1% |
| Kagi LLM Benchmark | 43% | — |
| ARC-AGI-1 | — | 14% |
| LiveBench Reasoning | — | 72.3% |
| LiveBench Data Analysis | — | 57.9% |
| Epoch Capabilities Index | — | 135.82 |
| ForecastBench | 59.2 | — |
| LiveBench | — | 57.8% |

## Math

- GLM-4.5-Air: 36.2 (#170)
- o1-mini: 35.4 (#186)

| Benchmark | GLM-4.5-Air | o1-mini |
|---|---|---|
| LMArena Math | 1396 | 1358 |
| OTIS Mock AIME 2024-2025 | — | 46.9% |
| Omni-MATH | 39.1% | — |
| LiveBench Math | — | 62% |
| MATH Level 5 | — | 89.2% |
| FrontierMath (Feb 2025 set) | — | 1.7% |

## Knowledge

- GLM-4.5-Air: 35.0 (#191)
- o1-mini: 34.9 (#192)

| Benchmark | GLM-4.5-Air | o1-mini |
|---|---|---|
| LMArena Expert | 1370 | 1316 |
| GPQA Diamond | — | 62.4% |
| Humanity's Last Exam | 8.1% | — |
| MMLU-Pro | 76.2% | — |
| Confabulations | — | 18.6% |
| Vectara Hallucination Rate | 9.3% | — |
| GPQA (HELM) | 59.4% | — |

## Multilingual

- GLM-4.5-Air: 49.1 (#135)
- o1-mini: 43.6 (#182)

| Benchmark | GLM-4.5-Air | o1-mini |
|---|---|---|
| LMArena Non-English | 1366 | 1289 |
| LMArena Chinese | 1426 | 1314 |
| LMArena French | 1399 | 1293 |
| LMArena German | 1377 | 1278 |
| LMArena Japanese | 1348 | 1245 |
| LMArena Korean | 1308 | 1223 |
| LMArena Russian | 1373 | 1283 |
| LMArena Spanish | 1386 | 1303 |

## Instruction Following

- GLM-4.5-Air: 69.6 (#171)
- o1-mini: 66.7 (#206)

| Benchmark | GLM-4.5-Air | o1-mini |
|---|---|---|
| LMArena Instruction Following | 1354 | 1304 |
| LiveBench Instruction Following | — | 65.4% |
| IFEval | 81.2% | — |

## Long Context

- GLM-4.5-Air: 41.6 (#135)
- o1-mini: 40.1 (#161)

| Benchmark | GLM-4.5-Air | o1-mini |
|---|---|---|
| LMArena Longer Query | 1366 | 1320 |

## Writing & Preference

- GLM-4.5-Air: 55.9 (#139)
- o1-mini: 48.4 (#202)

| Benchmark | GLM-4.5-Air | o1-mini |
|---|---|---|
| LMArena Text | 1384 | 1317 |
| LMArena Creative Writing | 1343 | 1244 |
| LMArena Multi-Turn | 1371 | 1314 |
| Short-Story Creative Writing | — | 64.9% |
| WildBench | 78.9% | — |
| LiveBench Language | — | 40.9% |

## FAQ

### Is GLM-4.5-Air better than o1-mini?

GLM-4.5-Air is the stronger model overall, scoring 38.9 to 34.0 on the Noometry Index.

### Is GLM-4.5-Air or o1-mini better for coding?

o1-mini scores higher on coding benchmarks: 35.5 versus 33.3 in the Noometry coding category.

### How many benchmarks do GLM-4.5-Air and o1-mini share?

17 benchmarks have published results for both models. GLM-4.5-Air has 27 scored results on Noometry and o1-mini has 39.