# Gemini 1.5 Flash 8B vs GLM-5.3-Flash

> GLM-5.3-Flash is the stronger model overall, scoring 51.8 to 29.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-1-5-flash-8b-vs-glm-5-3-flash
- Last updated: 2026-10-12
- 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-Flash in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GLM-5.3-Flash leads 58.4 to 16.0.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 4.6% for Gemini 1.5 Flash 8B and 93.9% for GLM-5.3-Flash.
- GLM-5.3-Flash has downloadable open weights; the other is API-only.

## Snapshot

| | Gemini 1.5 Flash 8B | GLM-5.3-Flash |
|---|---|---|
| Provider | Google | Z.ai (Zhipu) |
| Noometry Index | 29.9 | 51.8 |
| Rank | 301 | 41 |
| Context | — | 1M |
| Input $/M | — | $0.15 |
| Output $/M | — | $0.50 |
| Weights | Proprietary | Open |

## Coding

- Gemini 1.5 Flash 8B: 35.5 (#225)
- GLM-5.3-Flash: 53.1 (#31)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3-Flash |
|---|---|---|
| LMArena Coding | 1218 | 1508 |
| DeepSWE | — | 63.4% |
| FrontierCode | — | 31.8% |
| CursorBench | — | 36.8% |
| LMArena WebDev | — | 1609 |
| FrontierSWE | — | 18.1% |
| SciCode | — | 51.6% |
| ALE-Bench | — | 303.55 |

## Agentic & Tool Use

- Gemini 1.5 Flash 8B: —
- GLM-5.3-Flash: 34.2 (#47)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3-Flash |
|---|---|---|
| APEX-Agents | — | 52.8% |
| GDP.pdf | — | 14% |

## Reasoning

- Gemini 1.5 Flash 8B: 20.0 (#244)
- GLM-5.3-Flash: 48.0 (#42)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3-Flash |
|---|---|---|
| LMArena Hard Prompts | 1209 | 1491 |
| ARC-AGI-2 | — | 65.8% |
| ARC-AGI-1 | — | 91% |
| CritPt | — | 15.4% |
| Chess Puzzles | — | 14% |
| Mystery Game Puzzles | — | 8% |
| DTBench | 50% | — |
| Surface Evolver Bench | — | 52.5% |
| Bench to the Future 3 | — | 0.15 |
| Epoch Capabilities Index | — | 151.88 |

## Math

- Gemini 1.5 Flash 8B: 14.2 (#302)
- GLM-5.3-Flash: 53.3 (#47)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3-Flash |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 4.6% | 93.9% |
| LMArena Math | 1207 | 1500 |
| FrontierMath (Tiers 1-3) | — | 55.8% |
| FrontierMath Tier 4 | — | 17.1% |
| ProofBench | — | 21% |

## Knowledge

- Gemini 1.5 Flash 8B: 16.0 (#289)
- GLM-5.3-Flash: 58.4 (#36)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3-Flash |
|---|---|---|
| GPQA Diamond | 33% | 90.2% |
| LMArena Expert | 1185 | 1513 |

## Multimodal

- Gemini 1.5 Flash 8B: 28.2 (#115)
- GLM-5.3-Flash: 42.8 (#27)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3-Flash |
|---|---|---|
| LMArena Vision | 1044 | 1296 |

## Multilingual

- Gemini 1.5 Flash 8B: 38.5 (#229)
- GLM-5.3-Flash: 56.0 (#25)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3-Flash |
|---|---|---|
| LMArena Non-English | 1215 | 1462 |
| LMArena Chinese | 1231 | 1527 |
| LMArena French | 1234 | 1496 |
| LMArena German | 1206 | 1470 |
| LMArena Japanese | 1150 | 1429 |
| LMArena Korean | 1140 | 1446 |
| LMArena Russian | 1236 | 1469 |
| LMArena Spanish | 1212 | 1471 |

## Instruction Following

- Gemini 1.5 Flash 8B: 62.8 (#236)
- GLM-5.3-Flash: 77.5 (#20)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3-Flash |
|---|---|---|
| LMArena Instruction Following | 1199 | 1478 |

## Long Context

- Gemini 1.5 Flash 8B: 37.0 (#225)
- GLM-5.3-Flash: 45.4 (#39)

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

## Writing & Preference

- Gemini 1.5 Flash 8B: 42.8 (#232)
- GLM-5.3-Flash: 65.3 (#50)

| Benchmark | Gemini 1.5 Flash 8B | GLM-5.3-Flash |
|---|---|---|
| LMArena Text | 1226 | 1471 |
| LMArena Creative Writing | 1218 | 1442 |
| LMArena Multi-Turn | 1185 | 1467 |

## FAQ

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

GLM-5.3-Flash is the stronger model overall, scoring 51.8 to 29.9 on the Noometry Index.

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

GLM-5.3-Flash scores higher on coding benchmarks: 53.1 versus 35.5 in the Noometry coding category.

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

20 benchmarks have published results for both models. Gemini 1.5 Flash 8B has 21 scored results on Noometry and GLM-5.3-Flash has 40.