# Gemini 2.0 Flash-Lite vs GPT-4.5

> Gemini 2.0 Flash-Lite and GPT-4.5 score almost the same on the Noometry Index (37.3 vs 36.9), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/gemini-2-0-flash-lite-vs-gpt-4-5
- Last updated: 2026-10-10
- Shared benchmarks: 25

## Summary

- They share 25 benchmarks with published results for both. Gemini 2.0 Flash-Lite scores higher in 3 categories and GPT-4.5 in 6 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 2.0 Flash-Lite leads 21.2 to 14.1.
- The biggest single-benchmark swing is LiveBench Coding: 47.1% for Gemini 2.0 Flash-Lite and 75.2% for GPT-4.5.

## Snapshot

| | Gemini 2.0 Flash-Lite | GPT-4.5 |
|---|---|---|
| Provider | Google | OpenAI |
| Noometry Index | 37.3 | 36.9 |
| Rank | 189 | 200 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 2.0 Flash-Lite: 37.4 (#181)
- GPT-4.5: 41.8 (#102)

| Benchmark | Gemini 2.0 Flash-Lite | GPT-4.5 |
|---|---|---|
| LiveBench Coding | 47.1% | 75.2% |
| LMArena Coding | 1322 | 1397 |
| Aider Polyglot | — | 44.9% |
| WeirdML | — | 39.4% |

## Agentic & Tool Use

- Gemini 2.0 Flash-Lite: —
- GPT-4.5: 27.6 (#92)

| Benchmark | Gemini 2.0 Flash-Lite | GPT-4.5 |
|---|---|---|
| Cybench | — | 17.5% |

## Reasoning

- Gemini 2.0 Flash-Lite: 21.2 (#203)
- GPT-4.5: 14.1 (#320)

| Benchmark | Gemini 2.0 Flash-Lite | GPT-4.5 |
|---|---|---|
| LiveBench Reasoning | 50.1% | 71.1% |
| LMArena Hard Prompts | 1324 | 1404 |
| LiveBench Data Analysis | 65.5% | 64.3% |
| ForecastBench | 57.1 | 61.7 |
| LiveBench | 54.3% | 69% |
| ARC-AGI-2 | — | 0.8% |
| SimpleBench | — | 34.5% |
| ARC-AGI-1 | — | 10.3% |
| EnigmaEval | — | 3.2% |
| DTBench | 52.5% | — |
| Epoch Capabilities Index | — | 136.74 |

## Math

- Gemini 2.0 Flash-Lite: 31.8 (#192)
- GPT-4.5: 31.0 (#200)

| Benchmark | Gemini 2.0 Flash-Lite | GPT-4.5 |
|---|---|---|
| LiveBench Math | 58.1% | 69.3% |
| LMArena Math | 1309 | 1412 |
| OTIS Mock AIME 2024-2025 | — | 37.8% |
| Omni-MATH | 37.4% | — |
| MATH Level 5 | — | 78.6% |

## Knowledge

- Gemini 2.0 Flash-Lite: 34.6 (#185)
- GPT-4.5: 32.4 (#205)

| Benchmark | Gemini 2.0 Flash-Lite | GPT-4.5 |
|---|---|---|
| LMArena Expert | 1305 | 1394 |
| GPQA Diamond | — | 68.7% |
| Humanity's Last Exam | — | 5.4% |
| MMLU-Pro | 72% | — |
| Confabulations | — | 13.6% |
| GPQA (HELM) | 50% | — |

## Multimodal

- Gemini 2.0 Flash-Lite: 30.6 (#103)
- GPT-4.5: 37.0 (#68)

| Benchmark | Gemini 2.0 Flash-Lite | GPT-4.5 |
|---|---|---|
| LMArena Vision | 1100 | 1195 |
| VPCT | — | 45% |

## Multilingual

- Gemini 2.0 Flash-Lite: 46.2 (#156)
- GPT-4.5: 52.7 (#78)

| Benchmark | Gemini 2.0 Flash-Lite | GPT-4.5 |
|---|---|---|
| LMArena Non-English | 1323 | 1413 |
| LMArena Chinese | 1339 | 1421 |
| LMArena French | 1346 | 1417 |
| LMArena German | 1306 | 1457 |
| LMArena Japanese | 1302 | 1416 |
| LMArena Korean | 1325 | 1392 |
| LMArena Russian | 1328 | 1419 |
| LMArena Spanish | 1313 | — |

## Instruction Following

- Gemini 2.0 Flash-Lite: 70.6 (#158)
- GPT-4.5: 72.8 (#129)

| Benchmark | Gemini 2.0 Flash-Lite | GPT-4.5 |
|---|---|---|
| LiveBench Instruction Following | 78.3% | 72.3% |
| LMArena Instruction Following | 1305 | 1404 |
| IFEval | 82.4% | — |

## Long Context

- Gemini 2.0 Flash-Lite: 40.1 (#155)
- GPT-4.5: 40.4 (#150)

| Benchmark | Gemini 2.0 Flash-Lite | GPT-4.5 |
|---|---|---|
| LMArena Longer Query | 1321 | 1406 |
| Fiction.LiveBench | — | 63.9% |

## Writing & Preference

- Gemini 2.0 Flash-Lite: 51.9 (#172)
- GPT-4.5: 57.1 (#129)

| Benchmark | Gemini 2.0 Flash-Lite | GPT-4.5 |
|---|---|---|
| LMArena Text | 1330 | 1417 |
| LMArena Creative Writing | 1319 | 1394 |
| LMArena Multi-Turn | 1307 | 1444 |
| LiveBench Language | 34.3% | 61.5% |
| Short-Story Creative Writing | — | 75.6% |
| EQ-Bench Creative Writing | — | 1258 |
| WildBench | 79% | — |

## FAQ

### Is Gemini 2.0 Flash-Lite better than GPT-4.5?

Gemini 2.0 Flash-Lite and GPT-4.5 score almost the same on the Noometry Index (37.3 vs 36.9), so choose on price, context window or the category you care about most.

### Is Gemini 2.0 Flash-Lite or GPT-4.5 better for coding?

GPT-4.5 scores higher on coding benchmarks: 41.8 versus 37.4 in the Noometry coding category.

### How many benchmarks do Gemini 2.0 Flash-Lite and GPT-4.5 share?

25 benchmarks have published results for both models. Gemini 2.0 Flash-Lite has 32 scored results on Noometry and GPT-4.5 has 42.