# Gemini 3.5 Flash Lite vs GLM-5.1

> GLM-5.1 is the stronger model overall, scoring 47.6 to 41.8 on the Noometry Index. Gemini 3.5 Flash Lite costs 2.5× less per token, which makes it the better buy when GLM-5.1's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gemini-3-5-flash-lite-vs-glm-5-1
- Last updated: 2026-10-10
- Shared benchmarks: 30

## Summary

- They share 30 benchmarks with published results for both. Gemini 3.5 Flash Lite scores higher in 1 category and GLM-5.1 in 8 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where GLM-5.1 leads 49.0 to 25.7.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 71.1% for Gemini 3.5 Flash Lite and 93.3% for GLM-5.1.
- Gemini 3.5 Flash Lite is cheaper at $0.30 / $2.50 per million input/output tokens, against $1.40 / $4.40 for GLM-5.1.
- Gemini 3.5 Flash Lite accepts more context: 1.05M tokens versus 200K.
- GLM-5.1 has downloadable open weights; the other is API-only.

## Snapshot

| | Gemini 3.5 Flash Lite | GLM-5.1 |
|---|---|---|
| Provider | Google | Z.ai (Zhipu) |
| Noometry Index | 41.8 | 47.6 |
| Rank | 113 | 51 |
| Context | 1.05M | 200K |
| Input $/M | $0.30 | $1.40 |
| Output $/M | $2.50 | $4.40 |
| Weights | Proprietary | Open |

## Coding

- Gemini 3.5 Flash Lite: 42.1 (#96)
- GLM-5.1: 48.5 (#52)

| Benchmark | Gemini 3.5 Flash Lite | GLM-5.1 |
|---|---|---|
| LMArena WebDev | 1440 | 1509 |
| SciCode | 41.3% | 43.8% |
| WeirdML | 39% | 57.1% |
| LMArena Coding | 1455 | 1486 |
| ALE-Bench | 765.27 | 887.1 |
| SWE-bench Verified | — | 74.2% |

## Agentic & Tool Use

- Gemini 3.5 Flash Lite: 28.6 (#82)
- GLM-5.1: 24.8 (#106)

| Benchmark | Gemini 3.5 Flash Lite | GLM-5.1 |
|---|---|---|
| APEX-Agents | — | 40.9% |
| ExploitBench | — | 18.1% |
| GBAEval | — | 0% |
| GDP.pdf | 10% | — |
| Vending-Bench 2 | — | 5,634 |

## Reasoning

- Gemini 3.5 Flash Lite: 27.8 (#95)
- GLM-5.1: 38.2 (#57)

| Benchmark | Gemini 3.5 Flash Lite | GLM-5.1 |
|---|---|---|
| NYT Connections (extended) | 60.4% | 77.7% |
| CritPt | 0% | 4.6% |
| Chess Puzzles | 22% | 19% |
| LMArena Hard Prompts | 1441 | 1472 |
| Epoch Capabilities Index | 145.12 | 149.86 |
| ARC-AGI-2 | 10.3% | — |
| SimpleBench | — | 55.1% |
| ARC-AGI-1 | 53.5% | — |
| Thematic Generalization | — | 69.8% |
| Mystery Game Puzzles | 19% | — |
| DTBench | 83.5% | — |
| LMCA | 37.6% | — |

## Math

- Gemini 3.5 Flash Lite: 25.7 (#245)
- GLM-5.1: 49.0 (#48)

| Benchmark | Gemini 3.5 Flash Lite | GLM-5.1 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 26% | 36.8% |
| OTIS Mock AIME 2024-2025 | 71.1% | 93.3% |
| ProofBench | 13% | 22.2% |
| LMArena Math | 1431 | 1472 |
| FrontierMath Tier 4 | 0% | — |
| MathArena Final-Answer Competitions | — | 67.1% |
| FrontierMath (Feb 2025 set) | — | 33.4% |
| FrontierMath Tier 4 (v1) | — | 12.5% |

## Knowledge

- Gemini 3.5 Flash Lite: 50.0 (#66)
- GLM-5.1: 55.0 (#45)

| Benchmark | Gemini 3.5 Flash Lite | GLM-5.1 |
|---|---|---|
| GPQA Diamond | 83.3% | 89.9% |
| LMArena Expert | 1430 | 1477 |
| SimpleQA Verified | — | 34% |

## Multimodal

- Gemini 3.5 Flash Lite: 40.3 (#38)
- GLM-5.1: —

| Benchmark | Gemini 3.5 Flash Lite | GLM-5.1 |
|---|---|---|
| LMArena Vision | 1266 | — |

## Multilingual

- Gemini 3.5 Flash Lite: 53.8 (#59)
- GLM-5.1: 55.2 (#34)

| Benchmark | Gemini 3.5 Flash Lite | GLM-5.1 |
|---|---|---|
| LMArena Non-English | 1428 | 1448 |
| LMArena Chinese | 1467 | 1516 |
| LMArena French | 1452 | 1478 |
| LMArena German | 1454 | 1466 |
| LMArena Japanese | 1428 | 1436 |
| LMArena Korean | 1406 | 1423 |
| LMArena Russian | 1443 | 1453 |
| LMArena Spanish | 1440 | 1467 |

## Instruction Following

- Gemini 3.5 Flash Lite: 75.0 (#77)
- GLM-5.1: 76.5 (#41)

| Benchmark | Gemini 3.5 Flash Lite | GLM-5.1 |
|---|---|---|
| LMArena Instruction Following | 1420 | 1451 |

## Long Context

- Gemini 3.5 Flash Lite: 43.8 (#80)
- GLM-5.1: 44.9 (#51)

| Benchmark | Gemini 3.5 Flash Lite | GLM-5.1 |
|---|---|---|
| LMArena Longer Query | 1435 | 1467 |

## Writing & Preference

- Gemini 3.5 Flash Lite: 64.4 (#55)
- GLM-5.1: 67.2 (#29)

| Benchmark | Gemini 3.5 Flash Lite | GLM-5.1 |
|---|---|---|
| LMArena Text | 1436 | 1462 |
| LMArena Creative Writing | 1419 | 1454 |
| EQ-Bench Creative Writing | 1559 | 1592 |
| LMArena Multi-Turn | 1445 | 1473 |

## FAQ

### Is Gemini 3.5 Flash Lite better than GLM-5.1?

GLM-5.1 is the stronger model overall, scoring 47.6 to 41.8 on the Noometry Index. Gemini 3.5 Flash Lite costs 2.5× less per token, which makes it the better buy when GLM-5.1's lead doesn't matter for your workload.

### Which is cheaper, Gemini 3.5 Flash Lite or GLM-5.1?

Gemini 3.5 Flash Lite is cheaper. It lists at $0.30 per million input tokens and $2.50 per million output tokens; GLM-5.1 lists at $1.40 and $4.40.

### Is Gemini 3.5 Flash Lite or GLM-5.1 better for coding?

GLM-5.1 scores higher on coding benchmarks: 48.5 versus 42.1 in the Noometry coding category.

### Which has the bigger context window?

Gemini 3.5 Flash Lite does, with 1.05M tokens against 200K.

### How many benchmarks do Gemini 3.5 Flash Lite and GLM-5.1 share?

30 benchmarks have published results for both models. Gemini 3.5 Flash Lite has 38 scored results on Noometry and GLM-5.1 has 41.