Noometry

Model comparison

Gemini 3.1 Pro Preview vs GLM-4.5

Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 42.0 on the Noometry Index. GLM-4.5 costs 4.5× less per token, which makes it the better buy when Gemini 3.1 Pro Preview's lead doesn't matter for your workload.

Last verified . 22 shared benchmarks.

Gemini 3.1 Pro Preview Google

56.7

Rank #23 Confirmed

GLM-4.5 Z.ai (Zhipu)

42.0

Rank #122 Confirmed

Summary

  • They share 22 benchmarks with published results for both. Gemini 3.1 Pro Preview scores higher in 8 categories and GLM-4.5 in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Gemini 3.1 Pro Preview leads 71.7 to 28.6.
  • The biggest single-benchmark swing is Humanity's Last Exam: 46.4% for Gemini 3.1 Pro Preview and 8.3% for GLM-4.5.
  • GLM-4.5 is cheaper at $0.60 / $2.20 per million input/output tokens, against $2 / $12 for Gemini 3.1 Pro Preview.
  • Gemini 3.1 Pro Preview accepts more context: 1.05M tokens versus 131K.
  • GLM-4.5 has downloadable open weights; the other is API-only.

Side by side

Gemini 3.1 Pro PreviewGLM-4.5
ProviderGoogleZ.ai (Zhipu)
Noometry Index56.742.0
Released2026-02-192025-07-27
WeightsProprietaryOpen
Context window1.05M131K
Max output66K98K
Input $ / M tokens$2$0.60
Output $ / M tokens$12$2.20
Results tracked7127

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Category by category

Coding Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 42.5 (#99), GLM-4.5: 41.4 (#125)

BenchmarkGemini 3.1 Pro PreviewGLM-4.5
WeirdML72.1%40.6%
LMArena Coding14841434
ALE-Bench1,161344.82
AlgoTune2.021.52
SWE-bench Verified75.6%—
DeepSWE11.7%—
SWE-bench Verified (bash only)—54.2%
LMArena WebDev1447—
SciCode58.9%—
GSO22.6%—
MirrorCode8.9%—

Agentic & Tool Use Not comparable

Gemini 3.1 Pro Preview: 37.7 (#34), GLM-4.5: —

BenchmarkGemini 3.1 Pro PreviewGLM-4.5
Terminal-Bench80.2%—
APEX-Agents35.3%—
τ²-bench Banking26%—
DeepResearch Bench47.8%—
PostTrainBench22%—
BALROG57%—
ExploitBench26.1%—
GBAEval0.8%—
GDP.pdf17%—
LMArena Search1211—
METR Time Horizons77%—
Vending-Bench 23,774—

Reasoning Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 71.7 (#12), GLM-4.5: 28.6 (#100)

BenchmarkGemini 3.1 Pro PreviewGLM-4.5
LMArena Hard Prompts14851429
ARC-AGI-277.1%—
SimpleBench79.6%—
Kagi LLM Benchmark—57.9%
NYT Connections (extended)97.4%—
ARC-AGI-198%—
CritPt17.7%—
Chess Puzzles55%—
EnigmaEval36.8%—
Thematic Generalization79.4%—
EBR-Bench14.3%—
Mystery Game Puzzles34%—
DTBench97.1%—
LMCA53.8%—
Epoch Capabilities Index154.77—
ForecastBench59—

Math Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 62.1 (#34), GLM-4.5: 39.0 (#116)

BenchmarkGemini 3.1 Pro PreviewGLM-4.5
LMArena Math14851427
FrontierMath (Tiers 1-3)59.6%—
FrontierMath Tier 426.8%—
MathArena Final-Answer Competitions86.5%—
OTIS Mock AIME 2024-202595.6%—
ProofBench26%—
FrontierMath (Feb 2025 set)36.9%—
FrontierMath Tier 4 (v1)16.7%—

Knowledge Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 71.8 (#3), GLM-4.5: 35.9 (#179)

BenchmarkGemini 3.1 Pro PreviewGLM-4.5
Humanity's Last Exam46.4%8.3%
LMArena Expert14851433
GPQA Diamond94.4%—
SimpleQA Verified73.5%—
Confabulations—11.3%
Vectara Hallucination Rate10.4%—

Multimodal Not comparable

Gemini 3.1 Pro Preview: 37.9 (#69), GLM-4.5: —

BenchmarkGemini 3.1 Pro PreviewGLM-4.5
LMArena Vision1296—
Blueprint-Bench 226.5%—
Furniture Assembly26.7%—
LMArena Document1444—

Multilingual Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 57.0 (#12), GLM-4.5: 52.8 (#77)

BenchmarkGemini 3.1 Pro PreviewGLM-4.5
LMArena Non-English14771417
LMArena Chinese15291465
LMArena French14871418
LMArena German14911407
LMArena Japanese14931415
LMArena Korean14551380
LMArena Russian14981414
LMArena Spanish14791454

Instruction Following Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 77.0 (#32), GLM-4.5: 74.1 (#104)

BenchmarkGemini 3.1 Pro PreviewGLM-4.5
LMArena Instruction Following14661404

Long Context Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 47.4 (#18), GLM-4.5: 38.2 (#201)

BenchmarkGemini 3.1 Pro PreviewGLM-4.5
LMArena Longer Query14831412
Fiction.LiveBench—58.3%
CL-bench20.8%—
CL-bench Life16.9%—

Writing & Preference Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 66.1 (#37), GLM-4.5: 57.5 (#127)

BenchmarkGemini 3.1 Pro PreviewGLM-4.5
LMArena Text14811430
LMArena Creative Writing14821395
EQ-Bench Creative Writing14911343
LMArena Multi-Turn14881415
Short-Story Creative Writing—73.4%
EQ-Bench 41142—

Frequently asked questions

Is Gemini 3.1 Pro Preview better than GLM-4.5?

Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 42.0 on the Noometry Index. GLM-4.5 costs 4.5× less per token, which makes it the better buy when Gemini 3.1 Pro Preview's lead doesn't matter for your workload.

Which is cheaper, Gemini 3.1 Pro Preview or GLM-4.5?

GLM-4.5 is cheaper. It lists at $0.60 per million input tokens and $2.20 per million output tokens; Gemini 3.1 Pro Preview lists at $2 and $12.

Is Gemini 3.1 Pro Preview or GLM-4.5 better for coding?

Gemini 3.1 Pro Preview scores higher on coding benchmarks: 42.5 versus 41.4 in the Noometry coding category.

Which has the bigger context window?

Gemini 3.1 Pro Preview does, with 1.05M tokens against 131K.

How many benchmarks do Gemini 3.1 Pro Preview and GLM-4.5 share?

22 benchmarks have published results for both models. Gemini 3.1 Pro Preview has 71 scored results on Noometry and GLM-4.5 has 27.

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