Noometry

Model comparison

GLM-5.3 vs Grok 4.6

Grok 4.6 is the stronger model overall, scoring 56.9 to 54.8 on the Noometry Index.

Last verified . 40 shared benchmarks.

GLM-5.3 Z.ai (Zhipu)

54.8

Rank #26 Confirmed

Grok 4.6 xAI

56.9

Rank #21 Confirmed

Summary

  • They share 40 benchmarks with published results for both. GLM-5.3 scores higher in 5 categories and Grok 4.6 in 4 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Grok 4.6 leads 61.4 to 46.1.
  • The biggest single-benchmark swing is Chess Puzzles: 21% for GLM-5.3 and 40% for Grok 4.6.
  • GLM-5.3 is cheaper at $1.40 / $4.40 per million input/output tokens, against $2 / $6 for Grok 4.6.
  • GLM-5.3 accepts more context: 1M tokens versus 500K.
  • GLM-5.3 has downloadable open weights; the other is API-only.

Side by side

GLM-5.3Grok 4.6
ProviderZ.ai (Zhipu)xAI
Noometry Index54.856.9
Released2026-08-142026-08-12
WeightsOpenProprietary
Context window1M500K
Max output131K500K
Input $ / M tokens$1.40$2
Output $ / M tokens$4.40$6
Results tracked4249

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Category by category

Coding GLM-5.3 leads

GLM-5.3: 59.5 (#14), Grok 4.6: 58.5 (#16)

BenchmarkGLM-5.3Grok 4.6
DeepSWE69%67.5%
FrontierCode40.1%48%
CursorBench42.6%41.4%
LMArena WebDev16221617
FrontierSWE30.2%25.3%
SciCode59%56.5%
WeirdML75.4%67.3%
LMArena Coding14961465
ALE-Bench1,3171,508

Agentic & Tool Use Grok 4.6 leads

GLM-5.3: 36.4 (#38), Grok 4.6: 39.4 (#27)

BenchmarkGLM-5.3Grok 4.6
APEX-Agents56.6%65.3%
Vending-Bench 28,1649,047
GDP.pdf—17.2%

Reasoning Grok 4.6 leads

GLM-5.3: 46.1 (#46), Grok 4.6: 61.4 (#20)

BenchmarkGLM-5.3Grok 4.6
NYT Connections (extended)74.2%80%
CritPt19.1%19.7%
Chess Puzzles21%40%
LMArena Hard Prompts14891447
Mystery Game Puzzles33%34%
DTBench87.7%97.3%
LMCA55.5%48.5%
Epoch Capabilities Index155.61156.44
ARC-AGI-2—67.1%
SimpleBench—75.9%
ARC-AGI-1—87.5%
EBR-Bench—30.5%
Bench to the Future 30.15—

Math Grok 4.6 leads

GLM-5.3: 62.3 (#33), Grok 4.6: 67.0 (#24)

BenchmarkGLM-5.3Grok 4.6
FrontierMath (Tiers 1-3)68.8%66%
FrontierMath Tier 429.3%31.7%
OTIS Mock AIME 2024-202591.1%99.2%
ProofBench49%51%
LMArena Math14891423

Knowledge Grok 4.6 leads

GLM-5.3: 58.3 (#37), Grok 4.6: 63.3 (#20)

BenchmarkGLM-5.3Grok 4.6
GPQA Diamond90.9%94%
SimpleQA Verified41%49.3%
LMArena Expert15161467

Multimodal Not comparable

GLM-5.3: —, Grok 4.6: 43.6 (#23)

BenchmarkGLM-5.3Grok 4.6
LMArena Vision—1263
Blueprint-Bench 2—33.2%
Furniture Assembly—40%
LMArena Document—1452

Multilingual GLM-5.3 leads

GLM-5.3: 55.7 (#28), Grok 4.6: 53.0 (#74)

BenchmarkGLM-5.3Grok 4.6
LMArena Non-English14571420
LMArena Chinese15281480
LMArena French14991461
LMArena German14991431
LMArena Japanese14531376
LMArena Korean14721397
LMArena Russian14631422
LMArena Spanish14601404

Instruction Following GLM-5.3 leads

GLM-5.3: 77.5 (#23), Grok 4.6: 75.4 (#63)

BenchmarkGLM-5.3Grok 4.6
LMArena Instruction Following14771431

Long Context Too close to call

GLM-5.3: 45.4 (#41), Grok 4.6: 44.5 (#66)

BenchmarkGLM-5.3Grok 4.6
LMArena Longer Query14821454

Writing & Preference GLM-5.3 leads

GLM-5.3: 75.7 (#6), Grok 4.6: 62.3 (#80)

BenchmarkGLM-5.3Grok 4.6
LMArena Text14711428
LMArena Creative Writing14571428
LMArena Multi-Turn14721425
EQ-Bench Creative Writing2075—

Frequently asked questions

Is GLM-5.3 better than Grok 4.6?

Grok 4.6 is the stronger model overall, scoring 56.9 to 54.8 on the Noometry Index.

Which is cheaper, GLM-5.3 or Grok 4.6?

GLM-5.3 is cheaper. It lists at $1.40 per million input tokens and $4.40 per million output tokens; Grok 4.6 lists at $2 and $6.

Is GLM-5.3 or Grok 4.6 better for coding?

GLM-5.3 scores higher on coding benchmarks: 59.5 versus 58.5 in the Noometry coding category.

Which has the bigger context window?

GLM-5.3 does, with 1M tokens against 500K.

How many benchmarks do GLM-5.3 and Grok 4.6 share?

40 benchmarks have published results for both models. GLM-5.3 has 42 scored results on Noometry and Grok 4.6 has 49.

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