# GLM-4.5-Air vs GLM-4.7-Flash

> GLM-4.5-Air and GLM-4.7-Flash score almost the same on the Noometry Index (38.7 vs 38.4), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/glm-4-5-air-vs-glm-4-7-flash
- 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 4 categories and GLM-4.7-Flash in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where GLM-4.5-Air leads 56.1 to 47.7.
- GLM-4.7-Flash is cheaper at $0.06 / $0.40 per million input/output tokens, against $0.20 / $1.10 for GLM-4.5-Air.
- GLM-4.7-Flash accepts more context: 200K tokens versus 131K.

## Snapshot

| | GLM-4.5-Air | GLM-4.7-Flash |
|---|---|---|
| Provider | Z.ai (Zhipu) | Z.ai (Zhipu) |
| Noometry Index | 38.7 | 38.4 |
| Rank | 169 | 175 |
| Context | 131K | 200K |
| Input $/M | $0.20 | $0.06 |
| Output $/M | $1.10 | $0.40 |
| Weights | Open | Open |

## Coding

- GLM-4.5-Air: 34.5 (#225)
- GLM-4.7-Flash: 40.0 (#133)

| Benchmark | GLM-4.5-Air | GLM-4.7-Flash |
|---|---|---|
| LMArena Coding | 1397 | 1383 |
| GSO | 2.9% | — |

## Reasoning

- GLM-4.5-Air: 23.3 (#166)
- GLM-4.7-Flash: 20.2 (#224)

| Benchmark | GLM-4.5-Air | GLM-4.7-Flash |
|---|---|---|
| LMArena Hard Prompts | 1379 | 1356 |
| Kagi LLM Benchmark | 43% | — |
| Chess Puzzles | — | 0% |
| ForecastBench | 59.2 | — |

## Math

- GLM-4.5-Air: 33.8 (#166)
- GLM-4.7-Flash: 34.4 (#159)

| Benchmark | GLM-4.5-Air | GLM-4.7-Flash |
|---|---|---|
| LMArena Math | 1396 | 1354 |
| OTIS Mock AIME 2024-2025 | — | 58.3% |
| Omni-MATH | 39.1% | — |

## Knowledge

- GLM-4.5-Air: 34.6 (#184)
- GLM-4.7-Flash: 35.4 (#177)

| Benchmark | GLM-4.5-Air | GLM-4.7-Flash |
|---|---|---|
| Vectara Hallucination Rate | 9.3% | 9.3% |
| LMArena Expert | 1370 | 1357 |
| GPQA Diamond | — | 60.5% |
| Humanity's Last Exam | 8.1% | — |
| MMLU-Pro | 76.2% | — |
| GPQA (HELM) | 59.4% | — |

## Multilingual

- GLM-4.5-Air: 49.4 (#130)
- GLM-4.7-Flash: 46.8 (#152)

| Benchmark | GLM-4.5-Air | GLM-4.7-Flash |
|---|---|---|
| LMArena Non-English | 1366 | 1331 |
| LMArena Chinese | 1427 | 1403 |
| LMArena French | 1399 | 1332 |
| LMArena German | 1376 | 1336 |
| LMArena Korean | 1306 | 1284 |
| LMArena Russian | 1373 | 1333 |
| LMArena Spanish | 1385 | 1351 |
| LMArena Japanese | 1348 | — |

## Instruction Following

- GLM-4.5-Air: 69.8 (#165)
- GLM-4.7-Flash: 70.3 (#162)

| Benchmark | GLM-4.5-Air | GLM-4.7-Flash |
|---|---|---|
| LMArena Instruction Following | 1353 | 1327 |
| IFEval | 81.2% | — |

## Long Context

- GLM-4.5-Air: 41.6 (#130)
- GLM-4.7-Flash: 40.9 (#143)

| Benchmark | GLM-4.5-Air | GLM-4.7-Flash |
|---|---|---|
| LMArena Longer Query | 1367 | 1345 |

## Writing & Preference

- GLM-4.5-Air: 56.1 (#134)
- GLM-4.7-Flash: 47.7 (#206)

| Benchmark | GLM-4.5-Air | GLM-4.7-Flash |
|---|---|---|
| LMArena Text | 1384 | 1351 |
| LMArena Creative Writing | 1343 | 1297 |
| LMArena Multi-Turn | 1371 | 1342 |
| EQ-Bench Creative Writing | — | 1125 |
| WildBench | 78.9% | — |

## FAQ

### Is GLM-4.5-Air better than GLM-4.7-Flash?

GLM-4.5-Air and GLM-4.7-Flash score almost the same on the Noometry Index (38.7 vs 38.4), so choose on price, context window or the category you care about most.

### Which is cheaper, GLM-4.5-Air or GLM-4.7-Flash?

GLM-4.7-Flash is cheaper. It lists at $0.06 per million input tokens and $0.40 per million output tokens; GLM-4.5-Air lists at $0.20 and $1.10.

### Is GLM-4.5-Air or GLM-4.7-Flash better for coding?

GLM-4.7-Flash scores higher on coding benchmarks: 40.0 versus 34.5 in the Noometry coding category.

### Which has the bigger context window?

GLM-4.7-Flash does, with 200K tokens against 131K.

### How many benchmarks do GLM-4.5-Air and GLM-4.7-Flash share?

17 benchmarks have published results for both models. GLM-4.5-Air has 27 scored results on Noometry and GLM-4.7-Flash has 21.