Noometry

Model comparison

Gemini 1.5 Flash 8B vs GLM-5.1

GLM-5.1 is the stronger model overall, scoring 47.8 to 29.9 on the Noometry Index.

Last verified . 19 shared benchmarks.

Gemini 1.5 Flash 8B Google

29.9

Rank #301 Confirmed

GLM-5.1 Z.ai (Zhipu)

47.8

Rank #59 Confirmed

Summary

  • They share 19 benchmarks with published results for both. Gemini 1.5 Flash 8B scores higher in 0 categories and GLM-5.1 in 8 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where GLM-5.1 leads 54.9 to 16.0.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 4.6% for Gemini 1.5 Flash 8B and 93.3% for GLM-5.1.
  • GLM-5.1 has downloadable open weights; the other is API-only.

Side by side

Gemini 1.5 Flash 8BGLM-5.1
ProviderGoogleZ.ai (Zhipu)
Noometry Index29.947.8
Released2024-10-032026-04-07
WeightsProprietaryOpen
Context window—200K
Max output—131K
Input $ / M tokens—$1.40
Output $ / M tokens—$4.40
Results tracked2141

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Category by category

Coding GLM-5.1 leads

Gemini 1.5 Flash 8B: 35.5 (#225), GLM-5.1: 48.7 (#55)

BenchmarkGemini 1.5 Flash 8BGLM-5.1
LMArena Coding12181485
SWE-bench Verified—74.2%
LMArena WebDev—1508
SciCode—43.8%
WeirdML—57.1%
ALE-Bench—887.1

Agentic & Tool Use Not comparable

Gemini 1.5 Flash 8B: —, GLM-5.1: 24.9 (#113)

BenchmarkGemini 1.5 Flash 8BGLM-5.1
APEX-Agents—40.9%
ExploitBench—18.1%
GBAEval—0%
Vending-Bench 2—5,634

Reasoning GLM-5.1 leads

Gemini 1.5 Flash 8B: 20.0 (#244), GLM-5.1: 39.1 (#60)

BenchmarkGemini 1.5 Flash 8BGLM-5.1
LMArena Hard Prompts12091472
SimpleBench—55.1%
NYT Connections (extended)—77.7%
CritPt—4.6%
Chess Puzzles—19%
Thematic Generalization—69.8%
DTBench50%—
Epoch Capabilities Index—149.84

Math GLM-5.1 leads

Gemini 1.5 Flash 8B: 14.2 (#302), GLM-5.1: 49.7 (#60)

BenchmarkGemini 1.5 Flash 8BGLM-5.1
OTIS Mock AIME 2024-20254.6%93.3%
LMArena Math12071473
FrontierMath (Tiers 1-3)—36.8%
MathArena Final-Answer Competitions—67.1%
ProofBench—22.2%
FrontierMath (Feb 2025 set)—33.4%
FrontierMath Tier 4 (v1)—12.5%

Knowledge GLM-5.1 leads

Gemini 1.5 Flash 8B: 16.0 (#289), GLM-5.1: 54.9 (#50)

BenchmarkGemini 1.5 Flash 8BGLM-5.1
GPQA Diamond33%89.9%
LMArena Expert11851476
SimpleQA Verified—34%

Multimodal Not comparable

Gemini 1.5 Flash 8B: 28.2 (#115), GLM-5.1: —

BenchmarkGemini 1.5 Flash 8BGLM-5.1
LMArena Vision1044—

Multilingual GLM-5.1 leads

Gemini 1.5 Flash 8B: 38.5 (#229), GLM-5.1: 55.0 (#36)

BenchmarkGemini 1.5 Flash 8BGLM-5.1
LMArena Non-English12151447
LMArena Chinese12311515
LMArena French12341474
LMArena German12061465
LMArena Japanese11501434
LMArena Korean11401418
LMArena Russian12361454
LMArena Spanish12121469

Instruction Following GLM-5.1 leads

Gemini 1.5 Flash 8B: 62.8 (#236), GLM-5.1: 76.3 (#42)

BenchmarkGemini 1.5 Flash 8BGLM-5.1
LMArena Instruction Following11991451

Long Context GLM-5.1 leads

Gemini 1.5 Flash 8B: 37.0 (#225), GLM-5.1: 44.9 (#53)

BenchmarkGemini 1.5 Flash 8BGLM-5.1
LMArena Longer Query12191466

Writing & Preference GLM-5.1 leads

Gemini 1.5 Flash 8B: 42.8 (#232), GLM-5.1: 66.9 (#31)

BenchmarkGemini 1.5 Flash 8BGLM-5.1
LMArena Text12261461
LMArena Creative Writing12181453
LMArena Multi-Turn11851472
EQ-Bench Creative Writing—1592

Frequently asked questions

Is Gemini 1.5 Flash 8B better than GLM-5.1?

GLM-5.1 is the stronger model overall, scoring 47.8 to 29.9 on the Noometry Index.

Is Gemini 1.5 Flash 8B or GLM-5.1 better for coding?

GLM-5.1 scores higher on coding benchmarks: 48.7 versus 35.5 in the Noometry coding category.

How many benchmarks do Gemini 1.5 Flash 8B and GLM-5.1 share?

19 benchmarks have published results for both models. Gemini 1.5 Flash 8B has 21 scored results on Noometry and GLM-5.1 has 41.

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