Noometry

Model comparison

Gemini 3.1 Flash Lite vs GLM-4.5

GLM-4.5 is the stronger model overall, scoring 42.0 to 40.8 on the Noometry Index. Gemini 3.1 Flash Lite costs 1.8× less per token, which makes it the better buy when GLM-4.5's lead doesn't matter for your workload.

Last verified . 21 shared benchmarks.

Gemini 3.1 Flash Lite Google

40.8

Rank #144 Confirmed

GLM-4.5 Z.ai (Zhipu)

42.0

Rank #122 Confirmed

Summary

  • They share 21 benchmarks with published results for both. Gemini 3.1 Flash Lite scores higher in 4 categories and GLM-4.5 in 4 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where Gemini 3.1 Flash Lite leads 41.9 to 35.9.
  • The biggest single-benchmark swing is WeirdML: 52.2% for Gemini 3.1 Flash Lite and 40.6% for GLM-4.5.
  • Gemini 3.1 Flash Lite is cheaper at $0.25 / $1.50 per million input/output tokens, against $0.60 / $2.20 for GLM-4.5.
  • Gemini 3.1 Flash Lite 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 Flash LiteGLM-4.5
ProviderGoogleZ.ai (Zhipu)
Noometry Index40.842.0
Released2026-03-032025-07-27
WeightsProprietaryOpen
Context window1.05M131K
Max output66K98K
Input $ / M tokens$0.25$0.60
Output $ / M tokens$1.50$2.20
Results tracked3827

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Category by category

Coding GLM-4.5 leads

Gemini 3.1 Flash Lite: 37.8 (#188), GLM-4.5: 41.4 (#125)

BenchmarkGemini 3.1 Flash LiteGLM-4.5
WeirdML52.2%40.6%
LMArena Coding14001434
ALE-Bench797.73344.82
SWE-bench Verified (bash only)—54.2%
LMArena WebDev1256—
SciCode41.9%—
AlgoTune—1.52

Agentic & Tool Use Not comparable

Gemini 3.1 Flash Lite: 30.2 (#79), GLM-4.5: —

BenchmarkGemini 3.1 Flash LiteGLM-4.5
DeepResearch Bench37.3%—

Reasoning GLM-4.5 leads

Gemini 3.1 Flash Lite: 22.9 (#186), GLM-4.5: 28.6 (#100)

BenchmarkGemini 3.1 Flash LiteGLM-4.5
Kagi LLM Benchmark67.2%57.9%
LMArena Hard Prompts14071429
NYT Connections (extended)8.2%—
CritPt1.1%—
Chess Puzzles25%—
EnigmaEval3%—
Thematic Generalization63.3%—
DTBench76.8%—
LMCA35%—
Epoch Capabilities Index144.47—
ForecastBench54.4—

Math Gemini 3.1 Flash Lite leads

Gemini 3.1 Flash Lite: 40.7 (#90), GLM-4.5: 39.0 (#116)

BenchmarkGemini 3.1 Flash LiteGLM-4.5
LMArena Math14281427
FrontierMath (Tiers 1-3)27.7%—
OTIS Mock AIME 2024-202580%—

Knowledge Gemini 3.1 Flash Lite leads

Gemini 3.1 Flash Lite: 41.9 (#104), GLM-4.5: 35.9 (#179)

BenchmarkGemini 3.1 Flash LiteGLM-4.5
Humanity's Last Exam8.6%8.3%
LMArena Expert13981433
GPQA Diamond81.8%—
Confabulations—11.3%
Vectara Hallucination Rate8.2%—

Multimodal Not comparable

Gemini 3.1 Flash Lite: 39.4 (#60), GLM-4.5: —

BenchmarkGemini 3.1 Flash LiteGLM-4.5
LMArena Vision1240—

Multilingual Too close to call

Gemini 3.1 Flash Lite: 52.3 (#86), GLM-4.5: 52.8 (#77)

BenchmarkGemini 3.1 Flash LiteGLM-4.5
LMArena Non-English14111417
LMArena Chinese14611465
LMArena French14241418
LMArena German14291407
LMArena Japanese14131415
LMArena Korean13921380
LMArena Russian14201414
LMArena Spanish14211454

Instruction Following GLM-4.5 leads

Gemini 3.1 Flash Lite: 72.7 (#131), GLM-4.5: 74.1 (#104)

BenchmarkGemini 3.1 Flash LiteGLM-4.5
LMArena Instruction Following13771404

Long Context Gemini 3.1 Flash Lite leads

Gemini 3.1 Flash Lite: 42.5 (#122), GLM-4.5: 38.2 (#201)

BenchmarkGemini 3.1 Flash LiteGLM-4.5
LMArena Longer Query13941412
Fiction.LiveBench—58.3%

Writing & Preference Gemini 3.1 Flash Lite leads

Gemini 3.1 Flash Lite: 60.9 (#94), GLM-4.5: 57.5 (#127)

BenchmarkGemini 3.1 Flash LiteGLM-4.5
LMArena Text14161430
LMArena Creative Writing14011395
LMArena Multi-Turn14171415
Short-Story Creative Writing—73.4%
EQ-Bench Creative Writing—1343

Frequently asked questions

Is Gemini 3.1 Flash Lite better than GLM-4.5?

GLM-4.5 is the stronger model overall, scoring 42.0 to 40.8 on the Noometry Index. Gemini 3.1 Flash Lite costs 1.8× less per token, which makes it the better buy when GLM-4.5's lead doesn't matter for your workload.

Which is cheaper, Gemini 3.1 Flash Lite or GLM-4.5?

Gemini 3.1 Flash Lite is cheaper. It lists at $0.25 per million input tokens and $1.50 per million output tokens; GLM-4.5 lists at $0.60 and $2.20.

Is Gemini 3.1 Flash Lite or GLM-4.5 better for coding?

GLM-4.5 scores higher on coding benchmarks: 41.4 versus 37.8 in the Noometry coding category.

Which has the bigger context window?

Gemini 3.1 Flash Lite does, with 1.05M tokens against 131K.

How many benchmarks do Gemini 3.1 Flash Lite and GLM-4.5 share?

21 benchmarks have published results for both models. Gemini 3.1 Flash Lite has 38 scored results on Noometry and GLM-4.5 has 27.

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