# Gemini 1.5 Flash 8B vs GLM-5.3

> GLM-5.3 is the stronger model overall, scoring 54.8 to 29.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-1-5-flash-8b-vs-glm-5-3
- Last updated: 2026-10-10
- Shared benchmarks: 20

## Summary

- They share 20 benchmarks with published results for both. Gemini 1.5 Flash 8B scores higher in 0 categories and GLM-5.3 in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where GLM-5.3 leads 62.3 to 14.2.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 4.6% for Gemini 1.5 Flash 8B and 91.1% for GLM-5.3.
- GLM-5.3 has downloadable open weights; the other is API-only.

## Snapshot

| | Gemini 1.5 Flash 8B | GLM-5.3 |
|---|---|---|
| Provider | Google | Z.ai (Zhipu) |
| Noometry Index | 29.9 | 54.8 |
| Rank | 301 | 26 |
| Context | — | 1M |
| Input $/M | — | $1.40 |
| Output $/M | — | $4.40 |
| Weights | Proprietary | Open |

## Coding

- Gemini 1.5 Flash 8B: 35.5 (#225)
- GLM-5.3: 59.5 (#14)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3 |
|---|---|---|
| LMArena Coding | 1218 | 1496 |
| DeepSWE | — | 69% |
| FrontierCode | — | 40.1% |
| CursorBench | — | 42.6% |
| LMArena WebDev | — | 1622 |
| FrontierSWE | — | 30.2% |
| SciCode | — | 59% |
| WeirdML | — | 75.4% |
| ALE-Bench | — | 1,317 |

## Agentic & Tool Use

- Gemini 1.5 Flash 8B: —
- GLM-5.3: 36.4 (#38)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3 |
|---|---|---|
| APEX-Agents | — | 56.6% |
| Vending-Bench 2 | — | 8,164 |

## Reasoning

- Gemini 1.5 Flash 8B: 20.0 (#244)
- GLM-5.3: 46.1 (#46)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3 |
|---|---|---|
| LMArena Hard Prompts | 1209 | 1489 |
| DTBench | 50% | 87.7% |
| NYT Connections (extended) | — | 74.2% |
| CritPt | — | 19.1% |
| Chess Puzzles | — | 21% |
| Mystery Game Puzzles | — | 33% |
| LMCA | — | 55.5% |
| Bench to the Future 3 | — | 0.15 |
| Epoch Capabilities Index | — | 155.61 |

## Math

- Gemini 1.5 Flash 8B: 14.2 (#302)
- GLM-5.3: 62.3 (#33)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 4.6% | 91.1% |
| LMArena Math | 1207 | 1489 |
| FrontierMath (Tiers 1-3) | — | 68.8% |
| FrontierMath Tier 4 | — | 29.3% |
| ProofBench | — | 49% |

## Knowledge

- Gemini 1.5 Flash 8B: 16.0 (#289)
- GLM-5.3: 58.3 (#37)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3 |
|---|---|---|
| GPQA Diamond | 33% | 90.9% |
| LMArena Expert | 1185 | 1516 |
| SimpleQA Verified | — | 41% |

## Multimodal

- Gemini 1.5 Flash 8B: 28.2 (#115)
- GLM-5.3: —

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3 |
|---|---|---|
| LMArena Vision | 1044 | — |

## Multilingual

- Gemini 1.5 Flash 8B: 38.5 (#229)
- GLM-5.3: 55.7 (#28)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3 |
|---|---|---|
| LMArena Non-English | 1215 | 1457 |
| LMArena Chinese | 1231 | 1528 |
| LMArena French | 1234 | 1499 |
| LMArena German | 1206 | 1499 |
| LMArena Japanese | 1150 | 1453 |
| LMArena Korean | 1140 | 1472 |
| LMArena Russian | 1236 | 1463 |
| LMArena Spanish | 1212 | 1460 |

## Instruction Following

- Gemini 1.5 Flash 8B: 62.8 (#236)
- GLM-5.3: 77.5 (#23)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3 |
|---|---|---|
| LMArena Instruction Following | 1199 | 1477 |

## Long Context

- Gemini 1.5 Flash 8B: 37.0 (#225)
- GLM-5.3: 45.4 (#41)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3 |
|---|---|---|
| LMArena Longer Query | 1219 | 1482 |

## Writing & Preference

- Gemini 1.5 Flash 8B: 42.8 (#232)
- GLM-5.3: 75.7 (#6)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3 |
|---|---|---|
| LMArena Text | 1226 | 1471 |
| LMArena Creative Writing | 1218 | 1457 |
| LMArena Multi-Turn | 1185 | 1472 |
| EQ-Bench Creative Writing | — | 2075 |

## FAQ

### Is Gemini 1.5 Flash 8B better than GLM-5.3?

GLM-5.3 is the stronger model overall, scoring 54.8 to 29.9 on the Noometry Index.

### Is Gemini 1.5 Flash 8B or GLM-5.3 better for coding?

GLM-5.3 scores higher on coding benchmarks: 59.5 versus 35.5 in the Noometry coding category.

### How many benchmarks do Gemini 1.5 Flash 8B and GLM-5.3 share?

20 benchmarks have published results for both models. Gemini 1.5 Flash 8B has 21 scored results on Noometry and GLM-5.3 has 42.