# Gemini 3.5 Flash Lite vs GPT-5.4 mini

> GPT-5.4 mini is the stronger model overall, scoring 45.0 to 41.5 on the Noometry Index. Gemini 3.5 Flash Lite costs 2.0× less per token, which makes it the better buy when GPT-5.4 mini's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gemini-3-5-flash-lite-vs-gpt-5-4-mini
- Last updated: 2026-10-12
- Shared benchmarks: 37

## Summary

- They share 37 benchmarks with published results for both. Gemini 3.5 Flash Lite scores higher in 5 categories and GPT-5.4 mini in 5 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in math, where GPT-5.4 mini leads 45.5 to 25.9.
- The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 26% for Gemini 3.5 Flash Lite and 51.2% for GPT-5.4 mini.
- Gemini 3.5 Flash Lite is cheaper at $0.30 / $2.50 per million input/output tokens, against $0.75 / $4.50 for GPT-5.4 mini.
- Gemini 3.5 Flash Lite accepts more context: 1.05M tokens versus 400K.

## Snapshot

| | Gemini 3.5 Flash Lite | GPT-5.4 mini |
|---|---|---|
| Provider | Google | OpenAI |
| Noometry Index | 41.5 | 45.0 |
| Rank | 133 | 76 |
| Context | 1.05M | 400K |
| Input $/M | $0.30 | $0.75 |
| Output $/M | $2.50 | $4.50 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 3.5 Flash Lite: 42.4 (#104)
- GPT-5.4 mini: 45.2 (#72)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.4 mini |
|---|---|---|
| LMArena WebDev | 1440 | 1397 |
| SciCode | 41.3% | 49.9% |
| WeirdML | 39% | 60.3% |
| LMArena Coding | 1453 | 1438 |
| ALE-Bench | 765.27 | 1,189 |
| FrontierCode | — | 27% |

## Agentic & Tool Use

- Gemini 3.5 Flash Lite: 25.7 (#107)
- GPT-5.4 mini: 29.9 (#81)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.4 mini |
|---|---|---|
| APEX-Agents | 29.3% | — |
| DeepResearch Bench | — | 36.3% |
| GDP.pdf | 10% | — |

## Reasoning

- Gemini 3.5 Flash Lite: 27.8 (#114)
- GPT-5.4 mini: 30.4 (#85)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.4 mini |
|---|---|---|
| ARC-AGI-2 | 10.3% | 18.9% |
| NYT Connections (extended) | 60.4% | 61.8% |
| ARC-AGI-1 | 53.5% | 63.7% |
| CritPt | 0% | 10% |
| Chess Puzzles | 22% | 24% |
| LMArena Hard Prompts | 1441 | 1424 |
| Mystery Game Puzzles | 19% | 11% |
| DTBench | 83.5% | 80% |
| LMCA | 37.6% | 40.8% |
| Epoch Capabilities Index | 145.13 | 148.84 |
| Kagi LLM Benchmark | — | 37.9% |
| Thematic Generalization | — | 61.7% |
| ForecastBench | — | 57 |

## Math

- Gemini 3.5 Flash Lite: 25.9 (#264)
- GPT-5.4 mini: 45.5 (#75)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.4 mini |
|---|---|---|
| FrontierMath (Tiers 1-3) | 26% | 51.2% |
| FrontierMath Tier 4 | 0% | 9.8% |
| OTIS Mock AIME 2024-2025 | 71.1% | 88.9% |
| ProofBench | 13% | 21% |
| LMArena Math | 1433 | 1419 |
| FrontierMath (Feb 2025 set) | — | 28.3% |
| FrontierMath Tier 4 (v1) | — | 2.1% |

## Knowledge

- Gemini 3.5 Flash Lite: 50.1 (#72)
- GPT-5.4 mini: 51.5 (#67)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.4 mini |
|---|---|---|
| GPQA Diamond | 83.3% | 86.9% |
| LMArena Expert | 1435 | 1435 |
| SimpleQA Verified | — | 29.4% |
| Vectara Hallucination Rate | — | 5.5% |

## Multimodal

- Gemini 3.5 Flash Lite: 41.1 (#40)
- GPT-5.4 mini: 39.7 (#56)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.4 mini |
|---|---|---|
| LMArena Vision | 1268 | 1245 |

## Multilingual

- Gemini 3.5 Flash Lite: 53.5 (#63)
- GPT-5.4 mini: 51.9 (#96)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.4 mini |
|---|---|---|
| LMArena Non-English | 1427 | 1405 |
| LMArena Chinese | 1469 | 1446 |
| LMArena French | 1451 | 1440 |
| LMArena German | 1454 | 1409 |
| LMArena Japanese | 1427 | 1374 |
| LMArena Korean | 1407 | 1368 |
| LMArena Russian | 1443 | 1417 |
| LMArena Spanish | 1442 | 1405 |

## Instruction Following

- Gemini 3.5 Flash Lite: 74.8 (#85)
- GPT-5.4 mini: 74.1 (#102)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.4 mini |
|---|---|---|
| LMArena Instruction Following | 1420 | 1405 |

## Long Context

- Gemini 3.5 Flash Lite: 43.9 (#84)
- GPT-5.4 mini: 43.0 (#112)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.4 mini |
|---|---|---|
| LMArena Longer Query | 1435 | 1407 |

## Writing & Preference

- Gemini 3.5 Flash Lite: 64.2 (#57)
- GPT-5.4 mini: 64.0 (#58)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.4 mini |
|---|---|---|
| LMArena Text | 1435 | 1412 |
| LMArena Creative Writing | 1420 | 1370 |
| EQ-Bench Creative Writing | 1559 | 1665 |
| LMArena Multi-Turn | 1445 | 1429 |

## FAQ

### Is Gemini 3.5 Flash Lite better than GPT-5.4 mini?

GPT-5.4 mini is the stronger model overall, scoring 45.0 to 41.5 on the Noometry Index. Gemini 3.5 Flash Lite costs 2.0× less per token, which makes it the better buy when GPT-5.4 mini's lead doesn't matter for your workload.

### Which is cheaper, Gemini 3.5 Flash Lite or GPT-5.4 mini?

Gemini 3.5 Flash Lite is cheaper. It lists at $0.30 per million input tokens and $2.50 per million output tokens; GPT-5.4 mini lists at $0.75 and $4.50.

### Is Gemini 3.5 Flash Lite or GPT-5.4 mini better for coding?

GPT-5.4 mini scores higher on coding benchmarks: 45.2 versus 42.4 in the Noometry coding category.

### Which has the bigger context window?

Gemini 3.5 Flash Lite does, with 1.05M tokens against 400K.

### How many benchmarks do Gemini 3.5 Flash Lite and GPT-5.4 mini share?

37 benchmarks have published results for both models. Gemini 3.5 Flash Lite has 39 scored results on Noometry and GPT-5.4 mini has 46.