# GLM-4.6V vs Grok 4.1 Fast

> GLM-4.6V and Grok 4.1 Fast score almost the same on the Noometry Index (41.3 vs 41.4), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/glm-4-6v-vs-grok-4-1-fast
- Last updated: 2026-10-12
- Shared benchmarks: 12

## Summary

- They share 12 benchmarks with published results for both. GLM-4.6V scores higher in 2 categories and Grok 4.1 Fast in 6 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.1 Fast leads 43.4 to 27.6.
- Grok 4.1 Fast is cheaper at $0.20 / $0.50 per million input/output tokens, against $0.30 / $0.90 for GLM-4.6V.
- GLM-4.6V has downloadable open weights; the other is API-only.

## Snapshot

| | GLM-4.6V | Grok 4.1 Fast |
|---|---|---|
| Provider | Z.ai (Zhipu) | xAI |
| Noometry Index | 41.3 | 41.4 |
| Rank | 137 | 136 |
| Context | 128K | 128K |
| Input $/M | $0.30 | $0.20 |
| Output $/M | $0.90 | $0.50 |
| Weights | Open | Proprietary |

## Coding

- GLM-4.6V: 40.9 (#128)
- Grok 4.1 Fast: 34.1 (#245)

| Benchmark | GLM-4.6V | Grok 4.1 Fast |
|---|---|---|
| LMArena Coding | 1390 | 1411 |
| LMArena WebDev | — | 1242 |
| ALE-Bench | — | 394.93 |

## Agentic & Tool Use

- GLM-4.6V: —
- Grok 4.1 Fast: 36.3 (#39)

| Benchmark | GLM-4.6V | Grok 4.1 Fast |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 69.6% |
| τ²-bench Banking | — | 13.1% |
| LMArena Search | — | 1171 |
| Vending-Bench 2 | — | 1,107 |

## Reasoning

- GLM-4.6V: 27.6 (#115)
- Grok 4.1 Fast: 43.4 (#49)

| Benchmark | GLM-4.6V | Grok 4.1 Fast |
|---|---|---|
| LMArena Hard Prompts | 1368 | 1407 |
| SimpleBench | — | 56% |
| NYT Connections (extended) | — | 87.4% |
| DTBench | — | 87.7% |
| ForecastBench | — | 61 |

## Math

- GLM-4.6V: —
- Grok 4.1 Fast: 31.9 (#221)

| Benchmark | GLM-4.6V | Grok 4.1 Fast |
|---|---|---|
| MathArena Final-Answer Competitions | — | 60.9% |
| ProofBench | — | 4% |
| LMArena Math | — | 1408 |

## Knowledge

- GLM-4.6V: 38.0 (#149)
- Grok 4.1 Fast: 33.1 (#207)

| Benchmark | GLM-4.6V | Grok 4.1 Fast |
|---|---|---|
| LMArena Expert | 1371 | 1399 |
| Vectara Hallucination Rate | — | 17.8% |

## Multimodal

- GLM-4.6V: 34.8 (#90)
- Grok 4.1 Fast: 37.0 (#76)

| Benchmark | GLM-4.6V | Grok 4.1 Fast |
|---|---|---|
| LMArena Vision | 1164 | 1201 |

## Multilingual

- GLM-4.6V: 48.6 (#141)
- Grok 4.1 Fast: 51.0 (#114)

| Benchmark | GLM-4.6V | Grok 4.1 Fast |
|---|---|---|
| LMArena Non-English | 1359 | 1391 |
| LMArena Chinese | 1425 | 1441 |
| LMArena Russian | 1340 | 1387 |
| LMArena French | — | 1415 |
| LMArena German | — | 1404 |
| LMArena Japanese | — | 1349 |
| LMArena Korean | — | 1361 |
| LMArena Spanish | — | 1413 |

## Instruction Following

- GLM-4.6V: 71.4 (#151)
- Grok 4.1 Fast: 72.7 (#133)

| Benchmark | GLM-4.6V | Grok 4.1 Fast |
|---|---|---|
| LMArena Instruction Following | 1352 | 1376 |

## Long Context

- GLM-4.6V: 41.3 (#143)
- Grok 4.1 Fast: 42.4 (#126)

| Benchmark | GLM-4.6V | Grok 4.1 Fast |
|---|---|---|
| LMArena Longer Query | 1358 | 1390 |

## Writing & Preference

- GLM-4.6V: 56.6 (#137)
- Grok 4.1 Fast: 57.2 (#131)

| Benchmark | GLM-4.6V | Grok 4.1 Fast |
|---|---|---|
| LMArena Text | 1377 | 1408 |
| LMArena Creative Writing | 1347 | 1394 |
| LMArena Multi-Turn | 1360 | 1389 |
| EQ-Bench Creative Writing | — | 1327 |

## FAQ

### Is GLM-4.6V better than Grok 4.1 Fast?

GLM-4.6V and Grok 4.1 Fast score almost the same on the Noometry Index (41.3 vs 41.4), so choose on price, context window or the category you care about most.

### Which is cheaper, GLM-4.6V or Grok 4.1 Fast?

Grok 4.1 Fast is cheaper. It lists at $0.20 per million input tokens and $0.50 per million output tokens; GLM-4.6V lists at $0.30 and $0.90.

### Is GLM-4.6V or Grok 4.1 Fast better for coding?

GLM-4.6V scores higher on coding benchmarks: 40.9 versus 34.1 in the Noometry coding category.

### Which has the bigger context window?

Both accept 128K tokens.

### How many benchmarks do GLM-4.6V and Grok 4.1 Fast share?

12 benchmarks have published results for both models. GLM-4.6V has 12 scored results on Noometry and Grok 4.1 Fast has 32.