# Gemini 2.5 Flash-Lite vs o1-pro

> Gemini 2.5 Flash-Lite is the stronger model overall, scoring 37.0 to 31.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-2-5-flash-lite-vs-o1-pro
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- Gemini 2.5 Flash-Lite is cheaper at $0.10 / $0.40 per million input/output tokens, against $150 / $600 for o1-pro.
- Gemini 2.5 Flash-Lite accepts more context: 1.05M tokens versus 200K.

## Snapshot

| | Gemini 2.5 Flash-Lite | o1-pro |
|---|---|---|
| Provider | Google | OpenAI |
| Noometry Index | 37.0 | 31.5 |
| Rank | 211 | 271 |
| Context | 1.05M | 200K |
| Input $/M | $0.10 | $150 |
| Output $/M | $0.40 | $600 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 2.5 Flash-Lite: 38.5 (#173)
- o1-pro: —

| Benchmark | Gemini 2.5 Flash-Lite | o1-pro |
|---|---|---|
| WeirdML | 35.2% | — |
| LMArena Coding | 1373 | — |
| ALE-Bench | 325.9 | — |

## Agentic & Tool Use

- Gemini 2.5 Flash-Lite: 28.0 (#96)
- o1-pro: —

| Benchmark | Gemini 2.5 Flash-Lite | o1-pro |
|---|---|---|
| Berkeley Function Calling Leaderboard | 36.9% | — |

## Reasoning

- Gemini 2.5 Flash-Lite: 22.2 (#205)
- o1-pro: 20.4 (#239)

| Benchmark | Gemini 2.5 Flash-Lite | o1-pro |
|---|---|---|
| Kagi LLM Benchmark | 40.5% | — |
| ARC-AGI-1 | — | 23.3% |
| EnigmaEval | — | 6.1% |
| LMArena Hard Prompts | 1377 | — |
| DTBench | 62.8% | — |
| LMCA | 18.1% | — |
| Epoch Capabilities Index | 133.94 | — |

## Math

- Gemini 2.5 Flash-Lite: 38.0 (#144)
- o1-pro: —

| Benchmark | Gemini 2.5 Flash-Lite | o1-pro |
|---|---|---|
| Omni-MATH | 48% | — |
| LMArena Math | 1373 | — |

## Knowledge

- Gemini 2.5 Flash-Lite: 32.5 (#210)
- o1-pro: 29.7 (#234)

| Benchmark | Gemini 2.5 Flash-Lite | o1-pro |
|---|---|---|
| Humanity's Last Exam | — | 8.1% |
| MMLU-Pro | 53.7% | — |
| Vectara Hallucination Rate | 3.3% | — |
| GPQA (HELM) | 30.9% | — |
| LMArena Expert | 1373 | — |

## Multimodal

- Gemini 2.5 Flash-Lite: 29.1 (#114)
- o1-pro: —

| Benchmark | Gemini 2.5 Flash-Lite | o1-pro |
|---|---|---|
| LMArena Vision | 1198 | — |
| VPCT | 30% | — |

## Multilingual

- Gemini 2.5 Flash-Lite: 49.3 (#134)
- o1-pro: —

| Benchmark | Gemini 2.5 Flash-Lite | o1-pro |
|---|---|---|
| LMArena Non-English | 1369 | — |
| LMArena Chinese | 1404 | — |
| LMArena French | 1388 | — |
| LMArena German | 1389 | — |
| LMArena Japanese | 1359 | — |
| LMArena Korean | 1360 | — |
| LMArena Russian | 1373 | — |
| LMArena Spanish | 1396 | — |

## Instruction Following

- Gemini 2.5 Flash-Lite: 70.0 (#168)
- o1-pro: —

| Benchmark | Gemini 2.5 Flash-Lite | o1-pro |
|---|---|---|
| IFEval | 81% | — |
| LMArena Instruction Following | 1367 | — |

## Long Context

- Gemini 2.5 Flash-Lite: 33.3 (#262)
- o1-pro: —

| Benchmark | Gemini 2.5 Flash-Lite | o1-pro |
|---|---|---|
| Fiction.LiveBench | 47.2% | — |
| LMArena Longer Query | 1373 | — |

## Writing & Preference

- Gemini 2.5 Flash-Lite: 56.8 (#135)
- o1-pro: —

| Benchmark | Gemini 2.5 Flash-Lite | o1-pro |
|---|---|---|
| LMArena Text | 1379 | — |
| LMArena Creative Writing | 1367 | — |
| WildBench | 81.8% | — |
| LMArena Multi-Turn | 1366 | — |

## FAQ

### Is Gemini 2.5 Flash-Lite better than o1-pro?

Gemini 2.5 Flash-Lite is the stronger model overall, scoring 37.0 to 31.5 on the Noometry Index.

### Which is cheaper, Gemini 2.5 Flash-Lite or o1-pro?

Gemini 2.5 Flash-Lite is cheaper. It lists at $0.10 per million input tokens and $0.40 per million output tokens; o1-pro lists at $150 and $600.

### Which has the bigger context window?

Gemini 2.5 Flash-Lite does, with 1.05M tokens against 200K.

### How many benchmarks do Gemini 2.5 Flash-Lite and o1-pro share?

0 benchmarks have published results for both models. Gemini 2.5 Flash-Lite has 33 scored results on Noometry and o1-pro has 3.