Noometry

Model comparison

GLM-5.3 vs Grok Build 0.1

GLM-5.3 is the stronger model overall, scoring 54.6 to 35.8 on the Noometry Index. Grok Build 0.1 costs 1.7× less per token, which makes it the better buy when GLM-5.3's lead doesn't matter for your workload.

Last verified . 2 shared benchmarks.

GLM-5.3 Z.ai (Zhipu)

54.6

Rank #25 Confirmed

Grok Build 0.1 xAI

35.8

Rank #214 Reported

Summary

  • They share 2 benchmarks with published results for both. GLM-5.3 scores higher in 3 categories and Grok Build 0.1 in 0 categories; 3 gaps are clear of the uncertainty.
  • The widest gap is in coding, where GLM-5.3 leads 59.0 to 42.5.
  • The biggest single-benchmark swing is CritPt: 19.1% for GLM-5.3 and 9.1% for Grok Build 0.1.
  • Grok Build 0.1 is cheaper at $1 / $2 per million input/output tokens, against $1.40 / $4.40 for GLM-5.3.
  • GLM-5.3 accepts more context: 1M tokens versus 256K.
  • GLM-5.3 has downloadable open weights; the other is API-only.

Side by side

GLM-5.3Grok Build 0.1
ProviderZ.ai (Zhipu)xAI
Noometry Index54.635.8
Released2026-08-142026-04-16
WeightsOpenProprietary
Context window1M256K
Max output131K256K
Input $ / M tokens$1.40$1
Output $ / M tokens$4.40$2
Results tracked413

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Category by category

Coding GLM-5.3 leads

GLM-5.3: 59.0 (#12), Grok Build 0.1: 42.5 (#90)

BenchmarkGLM-5.3Grok Build 0.1
SciCode59%50.2%
DeepSWE69%—
FrontierCode40.1%—
LMArena WebDev1623—
FrontierSWE30.2%—
WeirdML75.4%—
LMArena Coding1499—
ALE-Bench1,317—

Agentic & Tool Use GLM-5.3 leads

GLM-5.3: 36.3 (#34), Grok Build 0.1: 22.5 (#122)

BenchmarkGLM-5.3Grok Build 0.1
APEX-Agents56.6%—
GBAEval—2.4%
Vending-Bench 28,164—

Reasoning GLM-5.3 leads

GLM-5.3: 45.2 (#42), Grok Build 0.1: 31.3 (#73)

BenchmarkGLM-5.3Grok Build 0.1
CritPt19.1%9.1%
NYT Connections (extended)74.2%—
Chess Puzzles21%—
LMArena Hard Prompts1491—
Mystery Game Puzzles33%—
DTBench87.7%—
LMCA55.5%—
Bench to the Future 30.15—
Epoch Capabilities Index155.56—

Math Not comparable

GLM-5.3: 62.1 (#27), Grok Build 0.1: —

BenchmarkGLM-5.3Grok Build 0.1
FrontierMath (Tiers 1-3)68.8%—
FrontierMath Tier 429.3%—
OTIS Mock AIME 2024-202591.1%—
ProofBench49%—
LMArena Math1493—

Knowledge Not comparable

GLM-5.3: 58.3 (#34), Grok Build 0.1: —

BenchmarkGLM-5.3Grok Build 0.1
GPQA Diamond90.9%—
SimpleQA Verified41%—
LMArena Expert1512—

Multilingual Not comparable

GLM-5.3: 55.9 (#27), Grok Build 0.1: —

BenchmarkGLM-5.3Grok Build 0.1
LMArena Non-English1457—
LMArena Chinese1523—
LMArena French1499—
LMArena German1505—
LMArena Japanese1438—
LMArena Korean1478—
LMArena Russian1460—
LMArena Spanish1444—

Instruction Following Not comparable

GLM-5.3: 77.8 (#15), Grok Build 0.1: —

BenchmarkGLM-5.3Grok Build 0.1
LMArena Instruction Following1481—

Long Context Not comparable

GLM-5.3: 45.5 (#32), Grok Build 0.1: —

BenchmarkGLM-5.3Grok Build 0.1
LMArena Longer Query1485—

Writing & Preference Not comparable

GLM-5.3: 75.9 (#6), Grok Build 0.1: —

BenchmarkGLM-5.3Grok Build 0.1
LMArena Text1473—
LMArena Creative Writing1459—
EQ-Bench Creative Writing2075—
LMArena Multi-Turn1473—

Frequently asked questions

Is GLM-5.3 better than Grok Build 0.1?

GLM-5.3 is the stronger model overall, scoring 54.6 to 35.8 on the Noometry Index. Grok Build 0.1 costs 1.7× less per token, which makes it the better buy when GLM-5.3's lead doesn't matter for your workload.

Which is cheaper, GLM-5.3 or Grok Build 0.1?

Grok Build 0.1 is cheaper. It lists at $1 per million input tokens and $2 per million output tokens; GLM-5.3 lists at $1.40 and $4.40.

Is GLM-5.3 or Grok Build 0.1 better for coding?

GLM-5.3 scores higher on coding benchmarks: 59.0 versus 42.5 in the Noometry coding category.

Which has the bigger context window?

GLM-5.3 does, with 1M tokens against 256K.

How many benchmarks do GLM-5.3 and Grok Build 0.1 share?

2 benchmarks have published results for both models. GLM-5.3 has 41 scored results on Noometry and Grok Build 0.1 has 3.

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