# GLM-4.5-Air vs Inkling-Small

> Inkling-Small is the stronger model overall, scoring 46.5 to 38.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/glm-4-5-air-vs-inkling-small
- 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 0 categories and Inkling-Small in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Inkling-Small leads 39.0 to 23.3.
- GLM-4.5-Air is cheaper at $0.20 / $1.10 per million input/output tokens, against $0.45 / $1.20 for Inkling-Small.
- Inkling-Small accepts more context: 524K tokens versus 131K.

## Snapshot

| | GLM-4.5-Air | Inkling-Small |
|---|---|---|
| Provider | Z.ai (Zhipu) | Thinking Machines Lab |
| Noometry Index | 38.7 | 46.5 |
| Rank | 169 | 57 |
| Context | 131K | 524K |
| Input $/M | $0.20 | $0.45 |
| Output $/M | $1.10 | $1.20 |
| Weights | Open | Open |

## Coding

- GLM-4.5-Air: 34.5 (#225)
- Inkling-Small: 43.3 (#80)

| Benchmark | GLM-4.5-Air | Inkling-Small |
|---|---|---|
| LMArena Coding | 1397 | 1451 |
| LMArena WebDev | — | 1408 |
| SciCode | — | 48.7% |
| GSO | 2.9% | — |

## Reasoning

- GLM-4.5-Air: 23.3 (#166)
- Inkling-Small: 39.0 (#53)

| Benchmark | GLM-4.5-Air | Inkling-Small |
|---|---|---|
| LMArena Hard Prompts | 1379 | 1424 |
| ARC-AGI-2 | — | 40.1% |
| Kagi LLM Benchmark | 43% | — |
| ARC-AGI-1 | — | 84% |
| CritPt | — | 8.3% |
| Chess Puzzles | — | 18% |
| Mystery Game Puzzles | — | 6% |
| Epoch Capabilities Index | — | 150.13 |
| ForecastBench | 59.2 | — |

## Math

- GLM-4.5-Air: 33.8 (#166)
- Inkling-Small: 44.9 (#65)

| Benchmark | GLM-4.5-Air | Inkling-Small |
|---|---|---|
| LMArena Math | 1396 | 1453 |
| FrontierMath (Tiers 1-3) | — | 46.3% |
| FrontierMath Tier 4 | — | 17.1% |
| OTIS Mock AIME 2024-2025 | — | 90% |
| ProofBench | — | 6% |
| Omni-MATH | 39.1% | — |

## Knowledge

- GLM-4.5-Air: 34.6 (#184)
- Inkling-Small: 48.3 (#71)

| Benchmark | GLM-4.5-Air | Inkling-Small |
|---|---|---|
| LMArena Expert | 1370 | 1442 |
| GPQA Diamond | — | 88.5% |
| Humanity's Last Exam | 8.1% | — |
| SimpleQA Verified | — | 19.1% |
| MMLU-Pro | 76.2% | — |
| Vectara Hallucination Rate | 9.3% | — |
| GPQA (HELM) | 59.4% | — |

## Multimodal

- GLM-4.5-Air: —
- Inkling-Small: 38.4 (#59)

| Benchmark | GLM-4.5-Air | Inkling-Small |
|---|---|---|
| LMArena Vision | — | 1235 |

## Multilingual

- GLM-4.5-Air: 49.4 (#130)
- Inkling-Small: 51.7 (#102)

| Benchmark | GLM-4.5-Air | Inkling-Small |
|---|---|---|
| LMArena Non-English | 1366 | 1400 |
| LMArena Chinese | 1427 | 1458 |
| LMArena French | 1399 | 1438 |
| LMArena German | 1376 | 1412 |
| LMArena Japanese | 1348 | 1399 |
| LMArena Korean | 1306 | 1355 |
| LMArena Russian | 1373 | 1392 |
| LMArena Spanish | 1385 | 1426 |

## Instruction Following

- GLM-4.5-Air: 69.8 (#165)
- Inkling-Small: 73.9 (#112)

| Benchmark | GLM-4.5-Air | Inkling-Small |
|---|---|---|
| LMArena Instruction Following | 1353 | 1397 |
| IFEval | 81.2% | — |

## Long Context

- GLM-4.5-Air: 41.6 (#130)
- Inkling-Small: 42.7 (#113)

| Benchmark | GLM-4.5-Air | Inkling-Small |
|---|---|---|
| LMArena Longer Query | 1367 | 1401 |

## Writing & Preference

- GLM-4.5-Air: 56.1 (#134)
- Inkling-Small: 59.8 (#102)

| Benchmark | GLM-4.5-Air | Inkling-Small |
|---|---|---|
| LMArena Text | 1384 | 1413 |
| LMArena Creative Writing | 1343 | 1330 |
| LMArena Multi-Turn | 1371 | 1420 |
| EQ-Bench Creative Writing | — | 1491 |
| WildBench | 78.9% | — |

## FAQ

### Is GLM-4.5-Air better than Inkling-Small?

Inkling-Small is the stronger model overall, scoring 46.5 to 38.7 on the Noometry Index.

### Which is cheaper, GLM-4.5-Air or Inkling-Small?

GLM-4.5-Air is cheaper. It lists at $0.20 per million input tokens and $1.10 per million output tokens; Inkling-Small lists at $0.45 and $1.20.

### Is GLM-4.5-Air or Inkling-Small better for coding?

Inkling-Small scores higher on coding benchmarks: 43.3 versus 34.5 in the Noometry coding category.

### Which has the bigger context window?

Inkling-Small does, with 524K tokens against 131K.

### How many benchmarks do GLM-4.5-Air and Inkling-Small share?

17 benchmarks have published results for both models. GLM-4.5-Air has 27 scored results on Noometry and Inkling-Small has 33.