# Gemini 1.5 Flash (May 2024) vs GLM-5.3

> GLM-5.3 is the stronger model overall, scoring 54.8 to 33.2 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-1-5-flash-vs-glm-5-3
- Last updated: 2026-10-12
- Shared benchmarks: 22

## Summary

- They share 22 benchmarks with published results for both. Gemini 1.5 Flash (May 2024) scores higher in 0 categories and GLM-5.3 in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where GLM-5.3 leads 62.3 to 22.1.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 16.3% for Gemini 1.5 Flash (May 2024) and 91.1% for GLM-5.3.
- GLM-5.3 has downloadable open weights; the other is API-only.

## Snapshot

| | Gemini 1.5 Flash (May 2024) | GLM-5.3 |
|---|---|---|
| Provider | Google | Z.ai (Zhipu) |
| Noometry Index | 33.2 | 54.8 |
| Rank | 246 | 26 |
| Context | — | 1M |
| Input $/M | — | $1.40 |
| Output $/M | — | $4.40 |
| Weights | Proprietary | Open |

## Coding

- Gemini 1.5 Flash (May 2024): 34.4 (#236)
- GLM-5.3: 59.5 (#14)

| Benchmark | Gemini 1.5 Flash (May 2024) | GLM-5.3 |
|---|---|---|
| WeirdML | 24.9% | 75.4% |
| LMArena Coding | 1261 | 1496 |
| DeepSWE | — | 69% |
| FrontierCode | — | 40.1% |
| CursorBench | — | 42.6% |
| LMArena WebDev | — | 1622 |
| FrontierSWE | — | 30.2% |
| SciCode | — | 59% |
| BigCodeBench Instruct | 43.5% | — |
| BigCodeBench Complete | 55.1% | — |
| ALE-Bench | — | 1,317 |
| HumanEval+ | 75.6% | — |
| MBPP+ | 67.5% | — |

## Agentic & Tool Use

- Gemini 1.5 Flash (May 2024): 26.6 (#102)
- GLM-5.3: 36.4 (#38)

| Benchmark | Gemini 1.5 Flash (May 2024) | GLM-5.3 |
|---|---|---|
| APEX-Agents | — | 56.6% |
| BALROG | 14.6% | — |
| Vending-Bench 2 | — | 8,164 |

## Reasoning

- Gemini 1.5 Flash (May 2024): 21.7 (#215)
- GLM-5.3: 46.1 (#46)

| Benchmark | Gemini 1.5 Flash (May 2024) | GLM-5.3 |
|---|---|---|
| LMArena Hard Prompts | 1257 | 1489 |
| DTBench | 53.8% | 87.7% |
| Epoch Capabilities Index | 129.36 | 155.61 |
| 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 |
| ForecastBench | 53.9 | — |
| PIQA | 87.5% | — |

## Math

- Gemini 1.5 Flash (May 2024): 22.1 (#281)
- GLM-5.3: 62.3 (#33)

| Benchmark | Gemini 1.5 Flash (May 2024) | GLM-5.3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 16.3% | 91.1% |
| LMArena Math | 1269 | 1489 |
| FrontierMath (Tiers 1-3) | — | 68.8% |
| FrontierMath Tier 4 | — | 29.3% |
| ProofBench | — | 49% |
| Omni-MATH | 30.4% | — |
| MATH Level 5 | 61.9% | — |
| FrontierMath (Feb 2025 set) | 0% | — |
| GSM8K | 82.4% | — |

## Knowledge

- Gemini 1.5 Flash (May 2024): 26.2 (#260)
- GLM-5.3: 58.3 (#37)

| Benchmark | Gemini 1.5 Flash (May 2024) | GLM-5.3 |
|---|---|---|
| GPQA Diamond | 47.3% | 90.9% |
| LMArena Expert | 1233 | 1516 |
| SimpleQA Verified | — | 41% |
| MMLU-Pro | 67.8% | — |
| GPQA (HELM) | 43.7% | — |
| BoolQ | 85.8% | — |
| MMLU | 77.9% | — |

## Multimodal

- Gemini 1.5 Flash (May 2024): 36.0 (#81)
- GLM-5.3: —

| Benchmark | Gemini 1.5 Flash (May 2024) | GLM-5.3 |
|---|---|---|
| LMArena Vision | 1141 | — |
| Video-MME | 70.3% | — |
| GeoBench | 76% | — |

## Multilingual

- Gemini 1.5 Flash (May 2024): 42.9 (#189)
- GLM-5.3: 55.7 (#28)

| Benchmark | Gemini 1.5 Flash (May 2024) | GLM-5.3 |
|---|---|---|
| LMArena Non-English | 1278 | 1457 |
| LMArena Chinese | 1295 | 1528 |
| LMArena French | 1258 | 1499 |
| LMArena German | 1262 | 1499 |
| LMArena Japanese | 1252 | 1453 |
| LMArena Korean | 1221 | 1472 |
| LMArena Russian | 1288 | 1463 |
| LMArena Spanish | 1243 | 1460 |

## Instruction Following

- Gemini 1.5 Flash (May 2024): 66.8 (#205)
- GLM-5.3: 77.5 (#23)

| Benchmark | Gemini 1.5 Flash (May 2024) | GLM-5.3 |
|---|---|---|
| LMArena Instruction Following | 1258 | 1477 |
| IFEval | 83.1% | — |

## Long Context

- Gemini 1.5 Flash (May 2024): 39.0 (#187)
- GLM-5.3: 45.4 (#41)

| Benchmark | Gemini 1.5 Flash (May 2024) | GLM-5.3 |
|---|---|---|
| LMArena Longer Query | 1284 | 1482 |

## Writing & Preference

- Gemini 1.5 Flash (May 2024): 48.7 (#196)
- GLM-5.3: 75.7 (#6)

| Benchmark | Gemini 1.5 Flash (May 2024) | GLM-5.3 |
|---|---|---|
| LMArena Text | 1287 | 1471 |
| LMArena Creative Writing | 1285 | 1457 |
| LMArena Multi-Turn | 1253 | 1472 |
| EQ-Bench Creative Writing | — | 2075 |
| WildBench | 79.2% | — |

## FAQ

### Is Gemini 1.5 Flash (May 2024) better than GLM-5.3?

GLM-5.3 is the stronger model overall, scoring 54.8 to 33.2 on the Noometry Index.

### Is Gemini 1.5 Flash (May 2024) or GLM-5.3 better for coding?

GLM-5.3 scores higher on coding benchmarks: 59.5 versus 34.4 in the Noometry coding category.

### How many benchmarks do Gemini 1.5 Flash (May 2024) and GLM-5.3 share?

22 benchmarks have published results for both models. Gemini 1.5 Flash (May 2024) has 42 scored results on Noometry and GLM-5.3 has 42.