Noometry

Model comparison

GLM-5.3 vs GPT-4.5

GLM-5.3 is the stronger model overall, scoring 54.8 to 37.2 on the Noometry Index.

Last verified . 21 shared benchmarks.

GLM-5.3 Z.ai (Zhipu)

54.8

Rank #26 Confirmed

GPT-4.5 OpenAI

37.2

Rank #208 Confirmed

Summary

  • They share 21 benchmarks with published results for both. GLM-5.3 scores higher in 9 categories and GPT-4.5 in 0 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where GLM-5.3 leads 46.1 to 13.9.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 91.1% for GLM-5.3 and 37.8% for GPT-4.5.
  • GLM-5.3 has downloadable open weights; the other is API-only.

Side by side

GLM-5.3GPT-4.5
ProviderZ.ai (Zhipu)OpenAI
Noometry Index54.837.2
Released2026-08-142025-02-27
WeightsOpenProprietary
Context window1M—
Max output131K—
Input $ / M tokens$1.40—
Output $ / M tokens$4.40—
Results tracked4242

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Category by category

Coding GLM-5.3 leads

GLM-5.3: 59.5 (#14), GPT-4.5: 42.2 (#109)

BenchmarkGLM-5.3GPT-4.5
WeirdML75.4%39.4%
LMArena Coding14961396
DeepSWE69%—
FrontierCode40.1%—
Aider Polyglot—44.9%
CursorBench42.6%—
LMArena WebDev1622—
FrontierSWE30.2%—
SciCode59%—
LiveBench Coding—75.2%
ALE-Bench1,317—

Agentic & Tool Use GLM-5.3 leads

GLM-5.3: 36.4 (#38), GPT-4.5: 27.9 (#97)

BenchmarkGLM-5.3GPT-4.5
APEX-Agents56.6%—
Cybench—17.5%
Vending-Bench 28,164—

Reasoning GLM-5.3 leads

GLM-5.3: 46.1 (#46), GPT-4.5: 13.9 (#330)

BenchmarkGLM-5.3GPT-4.5
LMArena Hard Prompts14891403
Epoch Capabilities Index155.61136.74
ARC-AGI-2—0.8%
SimpleBench—34.5%
NYT Connections (extended)74.2%—
ARC-AGI-1—10.3%
CritPt19.1%—
Chess Puzzles21%—
EnigmaEval—3.2%
LiveBench Reasoning—71.1%
Mystery Game Puzzles33%—
DTBench87.7%—
LiveBench Data Analysis—64.3%
LMCA55.5%—
Bench to the Future 30.15—
ForecastBench—61.7
LiveBench—69%

Math GLM-5.3 leads

GLM-5.3: 62.3 (#33), GPT-4.5: 32.6 (#211)

BenchmarkGLM-5.3GPT-4.5
OTIS Mock AIME 2024-202591.1%37.8%
LMArena Math14891412
FrontierMath (Tiers 1-3)68.8%—
FrontierMath Tier 429.3%—
ProofBench49%—
LiveBench Math—69.3%
MATH Level 5—78.6%

Knowledge GLM-5.3 leads

GLM-5.3: 58.3 (#37), GPT-4.5: 32.5 (#211)

BenchmarkGLM-5.3GPT-4.5
GPQA Diamond90.9%68.7%
LMArena Expert15161394
Humanity's Last Exam—5.4%
SimpleQA Verified41%—
Confabulations—13.6%

Multimodal Not comparable

GLM-5.3: —, GPT-4.5: 37.6 (#71)

BenchmarkGLM-5.3GPT-4.5
LMArena Vision—1195
VPCT—45%

Multilingual GLM-5.3 leads

GLM-5.3: 55.7 (#28), GPT-4.5: 52.5 (#83)

BenchmarkGLM-5.3GPT-4.5
LMArena Non-English14571413
LMArena Chinese15281421
LMArena French14991418
LMArena German14991457
LMArena Japanese14531416
LMArena Korean14721392
LMArena Russian14631419
LMArena Spanish1460—

Instruction Following GLM-5.3 leads

GLM-5.3: 77.5 (#23), GPT-4.5: 72.6 (#134)

BenchmarkGLM-5.3GPT-4.5
LMArena Instruction Following14771404
LiveBench Instruction Following—72.3%

Long Context GLM-5.3 leads

GLM-5.3: 45.4 (#41), GPT-4.5: 40.4 (#155)

BenchmarkGLM-5.3GPT-4.5
LMArena Longer Query14821406
Fiction.LiveBench—63.9%

Writing & Preference GLM-5.3 leads

GLM-5.3: 75.7 (#6), GPT-4.5: 56.9 (#134)

BenchmarkGLM-5.3GPT-4.5
LMArena Text14711417
LMArena Creative Writing14571394
EQ-Bench Creative Writing20751258
LMArena Multi-Turn14721444
Short-Story Creative Writing—75.6%
LiveBench Language—61.5%

Frequently asked questions

Is GLM-5.3 better than GPT-4.5?

GLM-5.3 is the stronger model overall, scoring 54.8 to 37.2 on the Noometry Index.

Is GLM-5.3 or GPT-4.5 better for coding?

GLM-5.3 scores higher on coding benchmarks: 59.5 versus 42.2 in the Noometry coding category.

How many benchmarks do GLM-5.3 and GPT-4.5 share?

21 benchmarks have published results for both models. GLM-5.3 has 42 scored results on Noometry and GPT-4.5 has 42.

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