Noometry

Model comparison

Gemini 3 Flash Preview vs GLM-5.3-Flash

Gemini 3 Flash Preview and GLM-5.3-Flash score almost the same on the Noometry Index (52.3 vs 51.8), so choose on price, context window or the category you care about most.

Last verified . 31 shared benchmarks.

Gemini 3 Flash Preview Google

52.3

Rank #40 Confirmed

GLM-5.3-Flash Z.ai (Zhipu)

51.8

Rank #41 Confirmed

Summary

  • They share 31 benchmarks with published results for both. Gemini 3 Flash Preview scores higher in 5 categories and GLM-5.3-Flash in 5 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in agentic & tool use, where Gemini 3 Flash Preview leads 38.7 to 34.2.
  • The biggest single-benchmark swing is ARC-AGI-2: 33.6% for Gemini 3 Flash Preview and 65.8% for GLM-5.3-Flash.
  • GLM-5.3-Flash is cheaper at $0.15 / $0.50 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 1M.
  • GLM-5.3-Flash has downloadable open weights; the other is API-only.

Side by side

Gemini 3 Flash PreviewGLM-5.3-Flash
ProviderGoogleZ.ai (Zhipu)
Noometry Index52.351.8
Released2025-12-172026-08-20
WeightsProprietaryOpen
Context window1.05M1M
Max output66K131K
Input $ / M tokens$0.50$0.15
Output $ / M tokens$3$0.50
Results tracked5940

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Category by category

Coding GLM-5.3-Flash leads

Gemini 3 Flash Preview: 50.9 (#42), GLM-5.3-Flash: 53.1 (#31)

BenchmarkGemini 3 Flash PreviewGLM-5.3-Flash
LMArena WebDev14391609
LMArena Coding14601508
ALE-Bench1,367303.55
SWE-bench Verified75.4%—
DeepSWE—63.4%
FrontierCode—31.8%
SWE-bench Verified (bash only)75.8%—
CursorBench—36.8%
SWE-bench Multilingual72.7%—
FrontierSWE—18.1%
SciCode—51.6%
GSO9.8%—
WeirdML61.6%—

Agentic & Tool Use Gemini 3 Flash Preview leads

Gemini 3 Flash Preview: 38.7 (#29), GLM-5.3-Flash: 34.2 (#47)

BenchmarkGemini 3 Flash PreviewGLM-5.3-Flash
GDP.pdf10%14%
Terminal-Bench64.3%—
APEX-Agents—52.8%
τ²-bench Airline82.5%—
τ²-bench Banking27.3%—
τ²-bench Retail76.8%—
τ²-bench Telecom91.2%—
DeepResearch Bench49.8%—
BALROG48.1%—
LMArena Search1198—
Vending-Bench 23,635—

Reasoning Gemini 3 Flash Preview leads

Gemini 3 Flash Preview: 49.2 (#37), GLM-5.3-Flash: 48.0 (#42)

BenchmarkGemini 3 Flash PreviewGLM-5.3-Flash
ARC-AGI-233.6%65.8%
ARC-AGI-184.7%91%
Chess Puzzles40%14%
LMArena Hard Prompts14651491
Mystery Game Puzzles26%8%
Epoch Capabilities Index151.8151.88
SimpleBench61.1%—
NYT Connections (extended)83.1%—
CritPt—15.4%
DTBench89.1%—
LMCA43.1%—
Surface Evolver Bench—52.5%
Bench to the Future 3—0.15
ForecastBench58.5—

Math GLM-5.3-Flash leads

Gemini 3 Flash Preview: 51.7 (#55), GLM-5.3-Flash: 53.3 (#47)

BenchmarkGemini 3 Flash PreviewGLM-5.3-Flash
FrontierMath (Tiers 1-3)51.2%55.8%
FrontierMath Tier 417.1%17.1%
OTIS Mock AIME 2024-202595.6%93.9%
ProofBench15%21%
LMArena Math14731500
MathArena Final-Answer Competitions67.6%—
FrontierMath (Feb 2025 set)35.6%—
FrontierMath Tier 4 (v1)4.2%—

Knowledge Too close to call

Gemini 3 Flash Preview: 58.8 (#33), GLM-5.3-Flash: 58.4 (#36)

BenchmarkGemini 3 Flash PreviewGLM-5.3-Flash
GPQA Diamond89.4%90.2%
LMArena Expert14621513
SimpleQA Verified66.8%—
Vectara Hallucination Rate13.5%—

Multimodal Gemini 3 Flash Preview leads

Gemini 3 Flash Preview: 45.5 (#16), GLM-5.3-Flash: 42.8 (#27)

BenchmarkGemini 3 Flash PreviewGLM-5.3-Flash
LMArena Vision12851296
GeoBench88%—
VPCT72.6%—
Blueprint-Bench 20%—
LMArena Document1413—

Multilingual Too close to call

Gemini 3 Flash Preview: 55.7 (#27), GLM-5.3-Flash: 56.0 (#25)

BenchmarkGemini 3 Flash PreviewGLM-5.3-Flash
LMArena Non-English14581462
LMArena Chinese15111527
LMArena French14771496
LMArena German14971470
LMArena Japanese14891429
LMArena Korean14431446
LMArena Russian14801469
LMArena Spanish14691471

Instruction Following GLM-5.3-Flash leads

Gemini 3 Flash Preview: 75.7 (#56), GLM-5.3-Flash: 77.5 (#20)

BenchmarkGemini 3 Flash PreviewGLM-5.3-Flash
LMArena Instruction Following14371478

Long Context GLM-5.3-Flash leads

Gemini 3 Flash Preview: 44.4 (#67), GLM-5.3-Flash: 45.4 (#39)

BenchmarkGemini 3 Flash PreviewGLM-5.3-Flash
LMArena Longer Query14521482

Writing & Preference Too close to call

Gemini 3 Flash Preview: 65.5 (#45), GLM-5.3-Flash: 65.3 (#50)

BenchmarkGemini 3 Flash PreviewGLM-5.3-Flash
LMArena Text14661471
LMArena Creative Writing14571442
LMArena Multi-Turn14711467

Frequently asked questions

Is Gemini 3 Flash Preview better than GLM-5.3-Flash?

Gemini 3 Flash Preview and GLM-5.3-Flash score almost the same on the Noometry Index (52.3 vs 51.8), so choose on price, context window or the category you care about most.

Which is cheaper, Gemini 3 Flash Preview or GLM-5.3-Flash?

GLM-5.3-Flash is cheaper. It lists at $0.15 per million input tokens and $0.50 per million output tokens; Gemini 3 Flash Preview lists at $0.50 and $3.

Is Gemini 3 Flash Preview or GLM-5.3-Flash better for coding?

GLM-5.3-Flash scores higher on coding benchmarks: 53.1 versus 50.9 in the Noometry coding category.

Which has the bigger context window?

Gemini 3 Flash Preview does, with 1.05M tokens against 1M.

How many benchmarks do Gemini 3 Flash Preview and GLM-5.3-Flash share?

31 benchmarks have published results for both models. Gemini 3 Flash Preview has 59 scored results on Noometry and GLM-5.3-Flash has 40.

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