Noometry

Model comparison

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.

Last verified . 12 shared benchmarks.

GLM-4.6V Z.ai (Zhipu)

41.3

Rank #137 Confirmed

Grok 4.1 Fast xAI

41.4

Rank #136 Confirmed

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.

Side by side

GLM-4.6VGrok 4.1 Fast
ProviderZ.ai (Zhipu)xAI
Noometry Index41.341.4
Released2025-12-082025-06-27
WeightsOpenProprietary
Context window128K128K
Max output33K30K
Input $ / M tokens$0.30$0.20
Output $ / M tokens$0.90$0.50
Results tracked1232

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Category by category

Coding GLM-4.6V leads

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

BenchmarkGLM-4.6VGrok 4.1 Fast
LMArena Coding13901411
LMArena WebDev—1242
ALE-Bench—394.93

Agentic & Tool Use Not comparable

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

BenchmarkGLM-4.6VGrok 4.1 Fast
Berkeley Function Calling Leaderboard—69.6%
τ²-bench Banking—13.1%
LMArena Search—1171
Vending-Bench 2—1,107

Reasoning Grok 4.1 Fast leads

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

BenchmarkGLM-4.6VGrok 4.1 Fast
LMArena Hard Prompts13681407
SimpleBench—56%
NYT Connections (extended)—87.4%
DTBench—87.7%
ForecastBench—61

Math Not comparable

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

BenchmarkGLM-4.6VGrok 4.1 Fast
MathArena Final-Answer Competitions—60.9%
ProofBench—4%
LMArena Math—1408

Knowledge GLM-4.6V leads

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

BenchmarkGLM-4.6VGrok 4.1 Fast
LMArena Expert13711399
Vectara Hallucination Rate—17.8%

Multimodal Grok 4.1 Fast leads

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

BenchmarkGLM-4.6VGrok 4.1 Fast
LMArena Vision11641201

Multilingual Grok 4.1 Fast leads

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

BenchmarkGLM-4.6VGrok 4.1 Fast
LMArena Non-English13591391
LMArena Chinese14251441
LMArena Russian13401387
LMArena French—1415
LMArena German—1404
LMArena Japanese—1349
LMArena Korean—1361
LMArena Spanish—1413

Instruction Following Grok 4.1 Fast leads

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

BenchmarkGLM-4.6VGrok 4.1 Fast
LMArena Instruction Following13521376

Long Context Grok 4.1 Fast leads

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

BenchmarkGLM-4.6VGrok 4.1 Fast
LMArena Longer Query13581390

Writing & Preference Too close to call

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

BenchmarkGLM-4.6VGrok 4.1 Fast
LMArena Text13771408
LMArena Creative Writing13471394
LMArena Multi-Turn13601389
EQ-Bench Creative Writing—1327

Frequently asked questions

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.

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