Noometry

Model comparison

Gemini 3 Flash Preview vs GLM-4.5-Air

Gemini 3 Flash Preview is the stronger model overall, scoring 52.3 to 38.9 on the Noometry Index. GLM-4.5-Air costs 2.6× less per token, which makes it the better buy when Gemini 3 Flash Preview's lead doesn't matter for your workload.

Last verified . 20 shared benchmarks.

Gemini 3 Flash Preview Google

52.3

Rank #40 Confirmed

GLM-4.5-Air Z.ai (Zhipu)

38.9

Rank #177 Confirmed

Summary

  • They share 20 benchmarks with published results for both. Gemini 3 Flash Preview scores higher in 8 categories and GLM-4.5-Air in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Gemini 3 Flash Preview leads 49.2 to 24.1.
  • The biggest single-benchmark swing is GSO: 9.8% for Gemini 3 Flash Preview and 2.9% for GLM-4.5-Air.
  • GLM-4.5-Air is cheaper at $0.20 / $1.10 per million input/output tokens, against $0.50 / $3 for Gemini 3 Flash Preview.
  • Gemini 3 Flash Preview accepts more context: 1.05M tokens versus 131K.
  • GLM-4.5-Air has downloadable open weights; the other is API-only.

Side by side

Gemini 3 Flash PreviewGLM-4.5-Air
ProviderGoogleZ.ai (Zhipu)
Noometry Index52.338.9
Released2025-12-172025-07-20
WeightsProprietaryOpen
Context window1.05M131K
Max output66K98K
Input $ / M tokens$0.50$0.20
Output $ / M tokens$3$1.10
Results tracked5927

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Category by category

Coding Gemini 3 Flash Preview leads

Gemini 3 Flash Preview: 50.9 (#42), GLM-4.5-Air: 33.3 (#259)

BenchmarkGemini 3 Flash PreviewGLM-4.5-Air
GSO9.8%2.9%
LMArena Coding14601397
SWE-bench Verified75.4%—
SWE-bench Verified (bash only)75.8%—
LMArena WebDev1439—
SWE-bench Multilingual72.7%—
WeirdML61.6%—
ALE-Bench1,367—

Agentic & Tool Use Not comparable

Gemini 3 Flash Preview: 38.7 (#29), GLM-4.5-Air: —

BenchmarkGemini 3 Flash PreviewGLM-4.5-Air
Terminal-Bench64.3%—
τ²-bench Airline82.5%—
τ²-bench Banking27.3%—
τ²-bench Retail76.8%—
τ²-bench Telecom91.2%—
DeepResearch Bench49.8%—
BALROG48.1%—
GDP.pdf10%—
LMArena Search1198—
Vending-Bench 23,635—

Reasoning Gemini 3 Flash Preview leads

Gemini 3 Flash Preview: 49.2 (#37), GLM-4.5-Air: 24.1 (#166)

BenchmarkGemini 3 Flash PreviewGLM-4.5-Air
LMArena Hard Prompts14651379
ForecastBench58.559.2
ARC-AGI-233.6%—
SimpleBench61.1%—
Kagi LLM Benchmark—43%
NYT Connections (extended)83.1%—
ARC-AGI-184.7%—
Chess Puzzles40%—
Mystery Game Puzzles26%—
DTBench89.1%—
LMCA43.1%—
Epoch Capabilities Index151.8—

Math Gemini 3 Flash Preview leads

Gemini 3 Flash Preview: 51.7 (#55), GLM-4.5-Air: 36.2 (#170)

BenchmarkGemini 3 Flash PreviewGLM-4.5-Air
LMArena Math14731396
FrontierMath (Tiers 1-3)51.2%—
FrontierMath Tier 417.1%—
MathArena Final-Answer Competitions67.6%—
OTIS Mock AIME 2024-202595.6%—
ProofBench15%—
Omni-MATH—39.1%
FrontierMath (Feb 2025 set)35.6%—
FrontierMath Tier 4 (v1)4.2%—

Knowledge Gemini 3 Flash Preview leads

Gemini 3 Flash Preview: 58.8 (#33), GLM-4.5-Air: 35.0 (#191)

BenchmarkGemini 3 Flash PreviewGLM-4.5-Air
Vectara Hallucination Rate13.5%9.3%
LMArena Expert14621370
GPQA Diamond89.4%—
Humanity's Last Exam—8.1%
SimpleQA Verified66.8%—
MMLU-Pro—76.2%
GPQA (HELM)—59.4%

Multimodal Not comparable

Gemini 3 Flash Preview: 45.5 (#16), GLM-4.5-Air: —

BenchmarkGemini 3 Flash PreviewGLM-4.5-Air
LMArena Vision1285—
GeoBench88%—
VPCT72.6%—
Blueprint-Bench 20%—
LMArena Document1413—

Multilingual Gemini 3 Flash Preview leads

Gemini 3 Flash Preview: 55.7 (#27), GLM-4.5-Air: 49.1 (#135)

BenchmarkGemini 3 Flash PreviewGLM-4.5-Air
LMArena Non-English14581366
LMArena Chinese15111426
LMArena French14771399
LMArena German14971377
LMArena Japanese14891348
LMArena Korean14431308
LMArena Russian14801373
LMArena Spanish14691386

Instruction Following Gemini 3 Flash Preview leads

Gemini 3 Flash Preview: 75.7 (#56), GLM-4.5-Air: 69.6 (#171)

BenchmarkGemini 3 Flash PreviewGLM-4.5-Air
LMArena Instruction Following14371354
IFEval—81.2%

Long Context Gemini 3 Flash Preview leads

Gemini 3 Flash Preview: 44.4 (#67), GLM-4.5-Air: 41.6 (#135)

BenchmarkGemini 3 Flash PreviewGLM-4.5-Air
LMArena Longer Query14521366

Writing & Preference Gemini 3 Flash Preview leads

Gemini 3 Flash Preview: 65.5 (#45), GLM-4.5-Air: 55.9 (#139)

BenchmarkGemini 3 Flash PreviewGLM-4.5-Air
LMArena Text14661384
LMArena Creative Writing14571343
LMArena Multi-Turn14711371
WildBench—78.9%

Frequently asked questions

Is Gemini 3 Flash Preview better than GLM-4.5-Air?

Gemini 3 Flash Preview is the stronger model overall, scoring 52.3 to 38.9 on the Noometry Index. GLM-4.5-Air costs 2.6× less per token, which makes it the better buy when Gemini 3 Flash Preview's lead doesn't matter for your workload.

Which is cheaper, Gemini 3 Flash Preview or GLM-4.5-Air?

GLM-4.5-Air is cheaper. It lists at $0.20 per million input tokens and $1.10 per million output tokens; Gemini 3 Flash Preview lists at $0.50 and $3.

Is Gemini 3 Flash Preview or GLM-4.5-Air better for coding?

Gemini 3 Flash Preview scores higher on coding benchmarks: 50.9 versus 33.3 in the Noometry coding category.

Which has the bigger context window?

Gemini 3 Flash Preview does, with 1.05M tokens against 131K.

How many benchmarks do Gemini 3 Flash Preview and GLM-4.5-Air share?

20 benchmarks have published results for both models. Gemini 3 Flash Preview has 59 scored results on Noometry and GLM-4.5-Air has 27.

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