# Gemini 3.1 Flash Lite vs GPT-5.4 mini

> GPT-5.4 mini is the stronger model overall, scoring 44.8 to 40.4 on the Noometry Index. Gemini 3.1 Flash Lite costs 3.0× 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-3-1-flash-lite-vs-gpt-5-4-mini
- Last updated: 2026-10-10
- Shared benchmarks: 36

## Summary

- They share 36 benchmarks with published results for both. Gemini 3.1 Flash Lite scores higher in 2 categories and GPT-5.4 mini in 8 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5.4 mini leads 51.4 to 41.7.
- The biggest single-benchmark swing is NYT Connections (extended): 8.2% for Gemini 3.1 Flash Lite and 61.8% for GPT-5.4 mini.
- Gemini 3.1 Flash Lite is cheaper at $0.25 / $1.50 per million input/output tokens, against $0.75 / $4.50 for GPT-5.4 mini.
- Gemini 3.1 Flash Lite accepts more context: 1.05M tokens versus 400K.

## Snapshot

| | Gemini 3.1 Flash Lite | GPT-5.4 mini |
|---|---|---|
| Provider | Google | OpenAI |
| Noometry Index | 40.4 | 44.8 |
| Rank | 141 | 69 |
| Context | 1.05M | 400K |
| Input $/M | $0.25 | $0.75 |
| Output $/M | $1.50 | $4.50 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 3.1 Flash Lite: 37.5 (#179)
- GPT-5.4 mini: 45.0 (#67)

| Benchmark | Gemini 3.1 Flash Lite | GPT-5.4 mini |
|---|---|---|
| LMArena WebDev | 1256 | 1397 |
| SciCode | 41.9% | 49.9% |
| WeirdML | 52.2% | 60.3% |
| LMArena Coding | 1400 | 1438 |
| ALE-Bench | 797.73 | 1,189 |
| FrontierCode | — | 27% |

## Agentic & Tool Use

- Gemini 3.1 Flash Lite: 29.9 (#72)
- GPT-5.4 mini: 29.6 (#74)

| Benchmark | Gemini 3.1 Flash Lite | GPT-5.4 mini |
|---|---|---|
| DeepResearch Bench | 37.3% | 36.3% |

## Reasoning

- Gemini 3.1 Flash Lite: 22.3 (#181)
- GPT-5.4 mini: 30.3 (#77)

| Benchmark | Gemini 3.1 Flash Lite | GPT-5.4 mini |
|---|---|---|
| Kagi LLM Benchmark | 67.2% | 37.9% |
| NYT Connections (extended) | 8.2% | 61.8% |
| CritPt | 1.1% | 10% |
| Chess Puzzles | 25% | 24% |
| Thematic Generalization | 63.3% | 61.7% |
| LMArena Hard Prompts | 1407 | 1424 |
| DTBench | 76.8% | 80% |
| LMCA | 35% | 40.8% |
| Epoch Capabilities Index | 144.45 | 148.83 |
| ForecastBench | 54.4 | 57 |
| ARC-AGI-2 | — | 18.9% |
| ARC-AGI-1 | — | 63.7% |
| EnigmaEval | 3% | — |
| Mystery Game Puzzles | — | 11% |

## Math

- Gemini 3.1 Flash Lite: 39.5 (#82)
- GPT-5.4 mini: 45.4 (#63)

| Benchmark | Gemini 3.1 Flash Lite | GPT-5.4 mini |
|---|---|---|
| FrontierMath (Tiers 1-3) | 27.7% | 51.2% |
| OTIS Mock AIME 2024-2025 | 80% | 88.9% |
| LMArena Math | 1427 | 1418 |
| FrontierMath Tier 4 | — | 9.8% |
| ProofBench | — | 21% |
| FrontierMath (Feb 2025 set) | — | 28.3% |
| FrontierMath Tier 4 (v1) | — | 2.1% |

## Knowledge

- Gemini 3.1 Flash Lite: 41.7 (#95)
- GPT-5.4 mini: 51.4 (#62)

| Benchmark | Gemini 3.1 Flash Lite | GPT-5.4 mini |
|---|---|---|
| GPQA Diamond | 81.8% | 86.9% |
| Vectara Hallucination Rate | 8.2% | 5.5% |
| LMArena Expert | 1397 | 1434 |
| Humanity's Last Exam | 8.6% | — |
| SimpleQA Verified | — | 29.4% |

## Multimodal

- Gemini 3.1 Flash Lite: 38.7 (#57)
- GPT-5.4 mini: 39.0 (#51)

| Benchmark | Gemini 3.1 Flash Lite | GPT-5.4 mini |
|---|---|---|
| LMArena Vision | 1240 | 1245 |

## Multilingual

- Gemini 3.1 Flash Lite: 52.5 (#82)
- GPT-5.4 mini: 52.1 (#94)

| Benchmark | Gemini 3.1 Flash Lite | GPT-5.4 mini |
|---|---|---|
| LMArena Non-English | 1410 | 1405 |
| LMArena Chinese | 1461 | 1446 |
| LMArena French | 1423 | 1440 |
| LMArena German | 1429 | 1407 |
| LMArena Japanese | 1411 | 1375 |
| LMArena Korean | 1393 | 1369 |
| LMArena Russian | 1420 | 1417 |
| LMArena Spanish | 1420 | 1403 |

## Instruction Following

- Gemini 3.1 Flash Lite: 72.9 (#126)
- GPT-5.4 mini: 74.3 (#99)

| Benchmark | Gemini 3.1 Flash Lite | GPT-5.4 mini |
|---|---|---|
| LMArena Instruction Following | 1376 | 1405 |

## Long Context

- Gemini 3.1 Flash Lite: 42.5 (#117)
- GPT-5.4 mini: 42.9 (#107)

| Benchmark | Gemini 3.1 Flash Lite | GPT-5.4 mini |
|---|---|---|
| LMArena Longer Query | 1394 | 1407 |

## Writing & Preference

- Gemini 3.1 Flash Lite: 61.0 (#90)
- GPT-5.4 mini: 64.2 (#56)

| Benchmark | Gemini 3.1 Flash Lite | GPT-5.4 mini |
|---|---|---|
| LMArena Text | 1416 | 1411 |
| LMArena Creative Writing | 1401 | 1370 |
| LMArena Multi-Turn | 1417 | 1429 |
| EQ-Bench Creative Writing | — | 1665 |

## FAQ

### Is Gemini 3.1 Flash Lite better than GPT-5.4 mini?

GPT-5.4 mini is the stronger model overall, scoring 44.8 to 40.4 on the Noometry Index. Gemini 3.1 Flash Lite costs 3.0× 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 3.1 Flash Lite or GPT-5.4 mini?

Gemini 3.1 Flash Lite is cheaper. It lists at $0.25 per million input tokens and $1.50 per million output tokens; GPT-5.4 mini lists at $0.75 and $4.50.

### Is Gemini 3.1 Flash Lite or GPT-5.4 mini better for coding?

GPT-5.4 mini scores higher on coding benchmarks: 45.0 versus 37.5 in the Noometry coding category.

### Which has the bigger context window?

Gemini 3.1 Flash Lite does, with 1.05M tokens against 400K.

### How many benchmarks do Gemini 3.1 Flash Lite and GPT-5.4 mini share?

36 benchmarks have published results for both models. Gemini 3.1 Flash Lite has 38 scored results on Noometry and GPT-5.4 mini has 46.