# Gemini 3 Deep Think vs GLM-5.3-Flash

> GLM-5.3-Flash has enough public results to be ranked (#45); Gemini 3 Deep Think does not yet, so treat this comparison as directional.

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

## Summary

- They share 1 benchmark with published results for both. Gemini 3 Deep Think scores higher in 1 category and GLM-5.3-Flash in 0 categories; one gap is clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3 Deep Think leads 70.8 to 31.7.
- The biggest single-benchmark swing is CritPt: 25.7% for Gemini 3 Deep Think and 15.4% for GLM-5.3-Flash.
- GLM-5.3-Flash has downloadable open weights; the other is API-only.

## Snapshot

| | Gemini 3 Deep Think | GLM-5.3-Flash |
|---|---|---|
| Provider | Google | Z.ai (Zhipu) |
| Noometry Index | 58.5 | 49.6 |
| Rank | — | 45 |
| Context | — | 1M |
| Input $/M | — | $0.15 |
| Output $/M | — | $0.50 |
| Weights | Proprietary | Open |

## Coding

- Gemini 3 Deep Think: —
- GLM-5.3-Flash: 53.7 (#26)

| Benchmark | Gemini 3 Deep Think | GLM-5.3-Flash |
|---|---|---|
| DeepSWE | — | 63.4% |
| FrontierCode | — | 31.8% |
| LMArena WebDev | — | 1614 |
| SciCode | — | 51.6% |
| LMArena Coding | — | 1506 |
| ALE-Bench | — | 303.55 |

## Agentic & Tool Use

- Gemini 3 Deep Think: —
- GLM-5.3-Flash: 34.3 (#41)

| Benchmark | Gemini 3 Deep Think | GLM-5.3-Flash |
|---|---|---|
| APEX-Agents | — | 52.8% |
| GDP.pdf | — | 14% |

## Reasoning

- Gemini 3 Deep Think: 70.8 (#11)
- GLM-5.3-Flash: 31.7 (#69)

| Benchmark | Gemini 3 Deep Think | GLM-5.3-Flash |
|---|---|---|
| CritPt | 25.7% | 15.4% |
| ARC-AGI-2 | 84.6% | — |
| ARC-AGI-1 | 96% | — |
| Chess Puzzles | — | 14% |
| LMArena Hard Prompts | — | 1490 |
| Mystery Game Puzzles | — | 8% |
| Surface Evolver Bench | — | 52.5% |
| Bench to the Future 3 | — | 0.15 |
| Epoch Capabilities Index | — | 151.9 |

## Math

- Gemini 3 Deep Think: —
- GLM-5.3-Flash: 53.1 (#38)

| Benchmark | Gemini 3 Deep Think | GLM-5.3-Flash |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 55.8% |
| FrontierMath Tier 4 | — | 17.1% |
| OTIS Mock AIME 2024-2025 | — | 93.9% |
| ProofBench | — | 21% |
| LMArena Math | — | 1499 |

## Knowledge

- Gemini 3 Deep Think: —
- GLM-5.3-Flash: 58.4 (#33)

| Benchmark | Gemini 3 Deep Think | GLM-5.3-Flash |
|---|---|---|
| GPQA Diamond | — | 90.2% |
| LMArena Expert | — | 1512 |

## Multimodal

- Gemini 3 Deep Think: —
- GLM-5.3-Flash: 42.6 (#25)

| Benchmark | Gemini 3 Deep Think | GLM-5.3-Flash |
|---|---|---|
| LMArena Vision | — | 1304 |

## Multilingual

- Gemini 3 Deep Think: —
- GLM-5.3-Flash: 56.2 (#24)

| Benchmark | Gemini 3 Deep Think | GLM-5.3-Flash |
|---|---|---|
| LMArena Non-English | — | 1462 |
| LMArena Chinese | — | 1529 |
| LMArena French | — | 1495 |
| LMArena German | — | 1457 |
| LMArena Japanese | — | 1420 |
| LMArena Korean | — | 1443 |
| LMArena Russian | — | 1472 |
| LMArena Spanish | — | 1471 |

## Instruction Following

- Gemini 3 Deep Think: —
- GLM-5.3-Flash: 77.8 (#17)

| Benchmark | Gemini 3 Deep Think | GLM-5.3-Flash |
|---|---|---|
| LMArena Instruction Following | — | 1480 |

## Long Context

- Gemini 3 Deep Think: —
- GLM-5.3-Flash: 45.3 (#41)

| Benchmark | Gemini 3 Deep Think | GLM-5.3-Flash |
|---|---|---|
| LMArena Longer Query | — | 1479 |

## Writing & Preference

- Gemini 3 Deep Think: —
- GLM-5.3-Flash: 65.4 (#49)

| Benchmark | Gemini 3 Deep Think | GLM-5.3-Flash |
|---|---|---|
| LMArena Text | — | 1471 |
| LMArena Creative Writing | — | 1440 |
| LMArena Multi-Turn | — | 1471 |

## FAQ

### Is Gemini 3 Deep Think better than GLM-5.3-Flash?

GLM-5.3-Flash has enough public results to be ranked (#45); Gemini 3 Deep Think does not yet, so treat this comparison as directional.

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

1 benchmark has published results for both models. Gemini 3 Deep Think has 3 scored results on Noometry and GLM-5.3-Flash has 36.