# Gemini 3 Flash Preview vs GLM-5.3-Flash

> Gemini 3 Flash Preview and GLM-5.3-Flash score almost the same on the Noometry Index (52.3 vs 51.8), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/gemini-3-flash-preview-vs-glm-5-3-flash
- Last updated: 2026-10-11
- Shared benchmarks: 31

## Summary

- They share 31 benchmarks with published results for both. Gemini 3 Flash Preview scores higher in 5 categories and GLM-5.3-Flash in 5 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in agentic & tool use, where Gemini 3 Flash Preview leads 38.7 to 34.2.
- The biggest single-benchmark swing is ARC-AGI-2: 33.6% for Gemini 3 Flash Preview and 65.8% for GLM-5.3-Flash.
- GLM-5.3-Flash is cheaper at $0.15 / $0.50 per million input/output tokens, against $0.50 / $3 for Gemini 3 Flash Preview.
- Gemini 3 Flash Preview accepts more context: 1.05M tokens versus 1M.
- GLM-5.3-Flash has downloadable open weights; the other is API-only.

## Snapshot

| | Gemini 3 Flash Preview | GLM-5.3-Flash |
|---|---|---|
| Provider | Google | Z.ai (Zhipu) |
| Noometry Index | 52.3 | 51.8 |
| Rank | 40 | 41 |
| Context | 1.05M | 1M |
| Input $/M | $0.50 | $0.15 |
| Output $/M | $3 | $0.50 |
| Weights | Proprietary | Open |

## Coding

- Gemini 3 Flash Preview: 50.9 (#42)
- GLM-5.3-Flash: 53.1 (#31)

| Benchmark | Gemini 3 Flash Preview | GLM-5.3-Flash |
|---|---|---|
| LMArena WebDev | 1439 | 1609 |
| LMArena Coding | 1460 | 1508 |
| ALE-Bench | 1,367 | 303.55 |
| SWE-bench Verified | 75.4% | — |
| DeepSWE | — | 63.4% |
| FrontierCode | — | 31.8% |
| SWE-bench Verified (bash only) | 75.8% | — |
| CursorBench | — | 36.8% |
| SWE-bench Multilingual | 72.7% | — |
| FrontierSWE | — | 18.1% |
| SciCode | — | 51.6% |
| GSO | 9.8% | — |
| WeirdML | 61.6% | — |

## Agentic & Tool Use

- Gemini 3 Flash Preview: 38.7 (#29)
- GLM-5.3-Flash: 34.2 (#47)

| Benchmark | Gemini 3 Flash Preview | GLM-5.3-Flash |
|---|---|---|
| GDP.pdf | 10% | 14% |
| Terminal-Bench | 64.3% | — |
| APEX-Agents | — | 52.8% |
| τ²-bench Airline | 82.5% | — |
| τ²-bench Banking | 27.3% | — |
| τ²-bench Retail | 76.8% | — |
| τ²-bench Telecom | 91.2% | — |
| DeepResearch Bench | 49.8% | — |
| BALROG | 48.1% | — |
| LMArena Search | 1198 | — |
| Vending-Bench 2 | 3,635 | — |

## Reasoning

- Gemini 3 Flash Preview: 49.2 (#37)
- GLM-5.3-Flash: 48.0 (#42)

| Benchmark | Gemini 3 Flash Preview | GLM-5.3-Flash |
|---|---|---|
| ARC-AGI-2 | 33.6% | 65.8% |
| ARC-AGI-1 | 84.7% | 91% |
| Chess Puzzles | 40% | 14% |
| LMArena Hard Prompts | 1465 | 1491 |
| Mystery Game Puzzles | 26% | 8% |
| Epoch Capabilities Index | 151.8 | 151.88 |
| SimpleBench | 61.1% | — |
| NYT Connections (extended) | 83.1% | — |
| CritPt | — | 15.4% |
| DTBench | 89.1% | — |
| LMCA | 43.1% | — |
| Surface Evolver Bench | — | 52.5% |
| Bench to the Future 3 | — | 0.15 |
| ForecastBench | 58.5 | — |

## Math

- Gemini 3 Flash Preview: 51.7 (#55)
- GLM-5.3-Flash: 53.3 (#47)

| Benchmark | Gemini 3 Flash Preview | GLM-5.3-Flash |
|---|---|---|
| FrontierMath (Tiers 1-3) | 51.2% | 55.8% |
| FrontierMath Tier 4 | 17.1% | 17.1% |
| OTIS Mock AIME 2024-2025 | 95.6% | 93.9% |
| ProofBench | 15% | 21% |
| LMArena Math | 1473 | 1500 |
| MathArena Final-Answer Competitions | 67.6% | — |
| FrontierMath (Feb 2025 set) | 35.6% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |

## Knowledge

- Gemini 3 Flash Preview: 58.8 (#33)
- GLM-5.3-Flash: 58.4 (#36)

| Benchmark | Gemini 3 Flash Preview | GLM-5.3-Flash |
|---|---|---|
| GPQA Diamond | 89.4% | 90.2% |
| LMArena Expert | 1462 | 1513 |
| SimpleQA Verified | 66.8% | — |
| Vectara Hallucination Rate | 13.5% | — |

## Multimodal

- Gemini 3 Flash Preview: 45.5 (#16)
- GLM-5.3-Flash: 42.8 (#27)

| Benchmark | Gemini 3 Flash Preview | GLM-5.3-Flash |
|---|---|---|
| LMArena Vision | 1285 | 1296 |
| GeoBench | 88% | — |
| VPCT | 72.6% | — |
| Blueprint-Bench 2 | 0% | — |
| LMArena Document | 1413 | — |

## Multilingual

- Gemini 3 Flash Preview: 55.7 (#27)
- GLM-5.3-Flash: 56.0 (#25)

| Benchmark | Gemini 3 Flash Preview | GLM-5.3-Flash |
|---|---|---|
| LMArena Non-English | 1458 | 1462 |
| LMArena Chinese | 1511 | 1527 |
| LMArena French | 1477 | 1496 |
| LMArena German | 1497 | 1470 |
| LMArena Japanese | 1489 | 1429 |
| LMArena Korean | 1443 | 1446 |
| LMArena Russian | 1480 | 1469 |
| LMArena Spanish | 1469 | 1471 |

## Instruction Following

- Gemini 3 Flash Preview: 75.7 (#56)
- GLM-5.3-Flash: 77.5 (#20)

| Benchmark | Gemini 3 Flash Preview | GLM-5.3-Flash |
|---|---|---|
| LMArena Instruction Following | 1437 | 1478 |

## Long Context

- Gemini 3 Flash Preview: 44.4 (#67)
- GLM-5.3-Flash: 45.4 (#39)

| Benchmark | Gemini 3 Flash Preview | GLM-5.3-Flash |
|---|---|---|
| LMArena Longer Query | 1452 | 1482 |

## Writing & Preference

- Gemini 3 Flash Preview: 65.5 (#45)
- GLM-5.3-Flash: 65.3 (#50)

| Benchmark | Gemini 3 Flash Preview | GLM-5.3-Flash |
|---|---|---|
| LMArena Text | 1466 | 1471 |
| LMArena Creative Writing | 1457 | 1442 |
| LMArena Multi-Turn | 1471 | 1467 |

## FAQ

### Is Gemini 3 Flash Preview better than GLM-5.3-Flash?

Gemini 3 Flash Preview and GLM-5.3-Flash score almost the same on the Noometry Index (52.3 vs 51.8), so choose on price, context window or the category you care about most.

### Which is cheaper, Gemini 3 Flash Preview or GLM-5.3-Flash?

GLM-5.3-Flash is cheaper. It lists at $0.15 per million input tokens and $0.50 per million output tokens; Gemini 3 Flash Preview lists at $0.50 and $3.

### Is Gemini 3 Flash Preview or GLM-5.3-Flash better for coding?

GLM-5.3-Flash scores higher on coding benchmarks: 53.1 versus 50.9 in the Noometry coding category.

### Which has the bigger context window?

Gemini 3 Flash Preview does, with 1.05M tokens against 1M.

### How many benchmarks do Gemini 3 Flash Preview and GLM-5.3-Flash share?

31 benchmarks have published results for both models. Gemini 3 Flash Preview has 59 scored results on Noometry and GLM-5.3-Flash has 40.