Noometry

Model comparison

Gemini 3.8 Flash vs GLM-4.5V

Gemini 3.8 Flash is the stronger model overall, scoring 61.8 to 39.8 on the Noometry Index. GLM-4.5V costs 1.7× less per token, which makes it the better buy when Gemini 3.8 Flash's lead doesn't matter for your workload.

Last verified . 14 shared benchmarks.

Gemini 3.8 Flash Google

61.8

Rank #11 Confirmed

GLM-4.5V Z.ai (Zhipu)

39.8

Rank #158 Confirmed

Summary

  • They share 14 benchmarks with published results for both. Gemini 3.8 Flash scores higher in 9 categories and GLM-4.5V in 0 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Gemini 3.8 Flash leads 76.9 to 27.4.
  • GLM-4.5V is cheaper at $0.60 / $1.80 per million input/output tokens, against $0.75 / $3.75 for Gemini 3.8 Flash.
  • Gemini 3.8 Flash accepts more context: 1.05M tokens versus 64K.
  • GLM-4.5V has downloadable open weights; the other is API-only.

Side by side

Gemini 3.8 FlashGLM-4.5V
ProviderGoogleZ.ai (Zhipu)
Noometry Index61.839.8
Released2026-09-022025-08-11
WeightsProprietaryOpen
Context window1.05M64K
Max output66K16K
Input $ / M tokens$0.75$0.60
Output $ / M tokens$3.75$1.80
Results tracked5015

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Category by category

Coding Gemini 3.8 Flash leads

Gemini 3.8 Flash: 59.2 (#15), GLM-4.5V: 39.5 (#155)

BenchmarkGemini 3.8 FlashGLM-4.5V
LMArena Coding15101347
DeepSWE73.8%—
FrontierCode41.2%—
CursorBench39.6%—
LMArena WebDev1584—
FrontierSWE19.6%—
SciCode56.6%—
WeirdML84.8%—
ALE-Bench1,270—

Agentic & Tool Use Not comparable

Gemini 3.8 Flash: 41.8 (#21), GLM-4.5V: —

BenchmarkGemini 3.8 FlashGLM-4.5V
APEX-Agents64.3%—
Remote Labor Index5.8%—
GDP.pdf23.4%—
Vending-Bench 25,094—

Reasoning Gemini 3.8 Flash leads

Gemini 3.8 Flash: 76.9 (#5), GLM-4.5V: 27.4 (#119)

BenchmarkGemini 3.8 FlashGLM-4.5V
LMArena Hard Prompts15081334
ARC-AGI-289.2%—
Kagi LLM Benchmark—59.8%
NYT Connections (extended)97.4%—
ARC-AGI-198.5%—
CritPt18.3%—
Chess Puzzles61%—
Mystery Game Puzzles47%—
DTBench95.7%—
LMCA52.9%—
Surface Evolver Bench76.9%—
Epoch Capabilities Index156.71—

Math Gemini 3.8 Flash leads

Gemini 3.8 Flash: 65.3 (#28), GLM-4.5V: 37.4 (#159)

BenchmarkGemini 3.8 FlashGLM-4.5V
LMArena Math15281354
FrontierMath (Tiers 1-3)68.4%—
FrontierMath Tier 422%—
OTIS Mock AIME 2024-202598.9%—
ProofBench48%—

Knowledge Gemini 3.8 Flash leads

Gemini 3.8 Flash: 74.8 (#2), GLM-4.5V: 37.5 (#156)

BenchmarkGemini 3.8 FlashGLM-4.5V
LMArena Expert15241353
GPQA Diamond95.4%—
Humanity's Last Exam44.5%—
SimpleQA Verified69.7%—

Multimodal Gemini 3.8 Flash leads

Gemini 3.8 Flash: 40.7 (#45), GLM-4.5V: 34.3 (#92)

BenchmarkGemini 3.8 FlashGLM-4.5V
LMArena Vision13141154
Blueprint-Bench 238.6%—
Furniture Assembly31.7%—

Multilingual Gemini 3.8 Flash leads

Gemini 3.8 Flash: 58.0 (#5), GLM-4.5V: 44.6 (#177)

BenchmarkGemini 3.8 FlashGLM-4.5V
LMArena Non-English14911303
LMArena Chinese15541337
LMArena Russian15151298
LMArena Spanish14851336
LMArena French1498—
LMArena German1493—
LMArena Japanese1502—
LMArena Korean1459—

Instruction Following Gemini 3.8 Flash leads

Gemini 3.8 Flash: 78.0 (#13), GLM-4.5V: 69.2 (#175)

BenchmarkGemini 3.8 FlashGLM-4.5V
LMArena Instruction Following14901311

Long Context Gemini 3.8 Flash leads

Gemini 3.8 Flash: 46.3 (#24), GLM-4.5V: 39.6 (#171)

BenchmarkGemini 3.8 FlashGLM-4.5V
LMArena Longer Query15081304

Writing & Preference Gemini 3.8 Flash leads

Gemini 3.8 Flash: 72.2 (#15), GLM-4.5V: 52.5 (#170)

BenchmarkGemini 3.8 FlashGLM-4.5V
LMArena Text14991333
LMArena Creative Writing14921295
LMArena Multi-Turn15011332
EQ-Bench Creative Writing1748—

Frequently asked questions

Is Gemini 3.8 Flash better than GLM-4.5V?

Gemini 3.8 Flash is the stronger model overall, scoring 61.8 to 39.8 on the Noometry Index. GLM-4.5V costs 1.7× less per token, which makes it the better buy when Gemini 3.8 Flash's lead doesn't matter for your workload.

Which is cheaper, Gemini 3.8 Flash or GLM-4.5V?

GLM-4.5V is cheaper. It lists at $0.60 per million input tokens and $1.80 per million output tokens; Gemini 3.8 Flash lists at $0.75 and $3.75.

Is Gemini 3.8 Flash or GLM-4.5V better for coding?

Gemini 3.8 Flash scores higher on coding benchmarks: 59.2 versus 39.5 in the Noometry coding category.

Which has the bigger context window?

Gemini 3.8 Flash does, with 1.05M tokens against 64K.

How many benchmarks do Gemini 3.8 Flash and GLM-4.5V share?

14 benchmarks have published results for both models. Gemini 3.8 Flash has 50 scored results on Noometry and GLM-4.5V has 15.

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