Noometry

Model comparison

GLM-4.5 vs Grok 4

Grok 4 is the stronger model overall, scoring 48.1 to 42.0 on the Noometry Index.

Last verified . 22 shared benchmarks.

GLM-4.5 Z.ai (Zhipu)

42.0

Rank #122 Confirmed

Grok 4 xAI

48.1

Rank #56 Confirmed

Summary

  • They share 22 benchmarks with published results for both. GLM-4.5 scores higher in 1 category and Grok 4 in 7 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in long context, where Grok 4 leads 63.1 to 38.2.
  • The biggest single-benchmark swing is Fiction.LiveBench: 58.3% for GLM-4.5 and 94.4% for Grok 4.
  • GLM-4.5 has downloadable open weights; the other is API-only.

Side by side

GLM-4.5Grok 4
ProviderZ.ai (Zhipu)xAI
Noometry Index42.048.1
Released2025-07-272025-07-09
WeightsOpenProprietary
Context window131K—
Max output98K—
Input $ / M tokens$0.60—
Output $ / M tokens$2.20—
Results tracked2748

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Category by category

Coding Grok 4 leads

GLM-4.5: 41.4 (#125), Grok 4: 50.3 (#46)

BenchmarkGLM-4.5Grok 4
WeirdML40.6%45.7%
LMArena Coding14341408
SWE-bench Verified (bash only)54.2%—
Aider Polyglot—79.6%
ALE-Bench344.82—
AlgoTune1.52—

Agentic & Tool Use Not comparable

GLM-4.5: —, Grok 4: 32.3 (#68)

BenchmarkGLM-4.5Grok 4
Terminal-Bench—27.2%
Berkeley Function Calling Leaderboard—63%
GDPval—21.1%
Cybench—43%
DeepResearch Bench—47.3%
BALROG—43.6%
LMArena Search—1142
METR Time Horizons—66.6%

Reasoning Grok 4 leads

GLM-4.5: 28.6 (#100), Grok 4: 36.7 (#65)

BenchmarkGLM-4.5Grok 4
Kagi LLM Benchmark57.9%73.6%
LMArena Hard Prompts14291409
ARC-AGI-2—16%
SimpleBench—60.5%
ARC-AGI-1—66.7%
Chess Puzzles—28%
Epoch Capabilities Index—146.44
ForecastBench—60.9

Math Grok 4 leads

GLM-4.5: 39.0 (#116), Grok 4: 48.4 (#64)

BenchmarkGLM-4.5Grok 4
LMArena Math14271422
OTIS Mock AIME 2024-2025—84%
Omni-MATH—60.3%
FrontierMath (Feb 2025 set)—19.7%
FrontierMath Tier 4 (v1)—2.1%

Knowledge Grok 4 leads

GLM-4.5: 35.9 (#179), Grok 4: 53.8 (#55)

BenchmarkGLM-4.5Grok 4
Confabulations11.3%12.4%
LMArena Expert14331415
GPQA Diamond—87%
Humanity's Last Exam8.3%—
MMLU-Pro—85.1%
GPQA (HELM)—72.7%

Multimodal Not comparable

GLM-4.5: —, Grok 4: 33.7 (#94)

BenchmarkGLM-4.5Grok 4
LMArena Vision—1210
GeoBench—45%

Multilingual GLM-4.5 leads

GLM-4.5: 52.8 (#77), Grok 4: 51.8 (#103)

BenchmarkGLM-4.5Grok 4
LMArena Non-English14171403
LMArena Chinese14651427
LMArena French14181418
LMArena German14071429
LMArena Japanese14151394
LMArena Korean13801377
LMArena Russian14141410
LMArena Spanish14541420

Instruction Following Grok 4 leads

GLM-4.5: 74.1 (#104), Grok 4: 79.2 (#5)

BenchmarkGLM-4.5Grok 4
LMArena Instruction Following14041387
IFEval—94.9%

Long Context Grok 4 leads

GLM-4.5: 38.2 (#201), Grok 4: 63.1 (#4)

BenchmarkGLM-4.5Grok 4
Fiction.LiveBench58.3%94.4%
LMArena Longer Query14121409

Writing & Preference Too close to call

GLM-4.5: 57.5 (#127), Grok 4: 58.5 (#116)

BenchmarkGLM-4.5Grok 4
LMArena Text14301411
LMArena Creative Writing13951397
Short-Story Creative Writing73.4%76.9%
LMArena Multi-Turn14151416
EQ-Bench Creative Writing1343—
WildBench—79.7%

Frequently asked questions

Is GLM-4.5 better than Grok 4?

Grok 4 is the stronger model overall, scoring 48.1 to 42.0 on the Noometry Index.

Is GLM-4.5 or Grok 4 better for coding?

Grok 4 scores higher on coding benchmarks: 50.3 versus 41.4 in the Noometry coding category.

How many benchmarks do GLM-4.5 and Grok 4 share?

22 benchmarks have published results for both models. GLM-4.5 has 27 scored results on Noometry and Grok 4 has 48.

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