Model comparison
GLM-4.5-Air vs Grok 4.1
Grok 4.1 is the stronger model overall, scoring 40.8 to 38.7 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. GLM-4.5-Air scores higher in 1 category and Grok 4.1 in 7 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Grok 4.1 leads 62.6 to 56.1.
- GLM-4.5-Air has downloadable open weights; the other is API-only.
Side by side
| GLM-4.5-Air | Grok 4.1 | |
|---|---|---|
| Provider | Z.ai (Zhipu) | xAI |
| Noometry Index | 38.7 | 40.8 |
| Released | 2025-07-20 | 2025-11-17 |
| Weights | Open | Proprietary |
| Context window | 131K | — |
| Max output | 98K | — |
| Input $ / M tokens | $0.20 | — |
| Output $ / M tokens | $1.10 | — |
| Results tracked | 27 | 19 |
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Category by category
Coding GLM-4.5-Air leads
GLM-4.5-Air: 34.5 (#225), Grok 4.1: 33.4 (#246)
| Benchmark | GLM-4.5-Air | Grok 4.1 |
|---|---|---|
| LMArena Coding | 1397 | 1445 |
| LMArena WebDev | — | 1214 |
| GSO | 2.9% | — |
Agentic & Tool Use Not comparable
GLM-4.5-Air: —, Grok 4.1: 33.8 (#47)
| Benchmark | GLM-4.5-Air | Grok 4.1 |
|---|---|---|
| Cybench | — | 39% |
Reasoning Grok 4.1 leads
GLM-4.5-Air: 23.3 (#166), Grok 4.1: 28.3 (#91)
| Benchmark | GLM-4.5-Air | Grok 4.1 |
|---|---|---|
| LMArena Hard Prompts | 1379 | 1436 |
| Kagi LLM Benchmark | 43% | — |
| ForecastBench | 59.2 | — |
Math Grok 4.1 leads
GLM-4.5-Air: 33.8 (#166), Grok 4.1: 36.2 (#124)
| Benchmark | GLM-4.5-Air | Grok 4.1 |
|---|---|---|
| LMArena Math | 1396 | 1422 |
| Omni-MATH | 39.1% | — |
Knowledge Grok 4.1 leads
GLM-4.5-Air: 34.6 (#184), Grok 4.1: 38.9 (#129)
| Benchmark | GLM-4.5-Air | Grok 4.1 |
|---|---|---|
| LMArena Expert | 1370 | 1417 |
| Humanity's Last Exam | 8.1% | — |
| MMLU-Pro | 76.2% | — |
| Vectara Hallucination Rate | 9.3% | — |
| GPQA (HELM) | 59.4% | — |
Multilingual Grok 4.1 leads
GLM-4.5-Air: 49.4 (#130), Grok 4.1: 53.6 (#64)
| Benchmark | GLM-4.5-Air | Grok 4.1 |
|---|---|---|
| LMArena Non-English | 1366 | 1425 |
| LMArena Chinese | 1427 | 1464 |
| LMArena French | 1399 | 1448 |
| LMArena German | 1376 | 1447 |
| LMArena Japanese | 1348 | 1396 |
| LMArena Korean | 1306 | 1407 |
| LMArena Russian | 1373 | 1434 |
| LMArena Spanish | 1385 | 1438 |
Instruction Following Grok 4.1 leads
GLM-4.5-Air: 69.8 (#165), Grok 4.1: 74.0 (#106)
| Benchmark | GLM-4.5-Air | Grok 4.1 |
|---|---|---|
| LMArena Instruction Following | 1353 | 1400 |
| IFEval | 81.2% | — |
Long Context Grok 4.1 leads
GLM-4.5-Air: 41.6 (#130), Grok 4.1: 43.2 (#96)
| Benchmark | GLM-4.5-Air | Grok 4.1 |
|---|---|---|
| LMArena Longer Query | 1367 | 1416 |
Writing & Preference Grok 4.1 leads
GLM-4.5-Air: 56.1 (#134), Grok 4.1: 62.6 (#71)
| Benchmark | GLM-4.5-Air | Grok 4.1 |
|---|---|---|
| LMArena Text | 1384 | 1437 |
| LMArena Creative Writing | 1343 | 1411 |
| LMArena Multi-Turn | 1371 | 1438 |
| WildBench | 78.9% | — |
Frequently asked questions
Is GLM-4.5-Air better than Grok 4.1?
Grok 4.1 is the stronger model overall, scoring 40.8 to 38.7 on the Noometry Index.
Is GLM-4.5-Air or Grok 4.1 better for coding?
GLM-4.5-Air scores higher on coding benchmarks: 34.5 versus 33.4 in the Noometry coding category.
How many benchmarks do GLM-4.5-Air and Grok 4.1 share?
17 benchmarks have published results for both models. GLM-4.5-Air has 27 scored results on Noometry and Grok 4.1 has 19.