# Gemini 2.5 Flash-Lite vs o1-mini

> Gemini 2.5 Flash-Lite is the stronger model overall, scoring 37.0 to 34.0 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-2-5-flash-lite-vs-o1-mini
- Last updated: 2026-10-11
- Shared benchmarks: 19

## Summary

- They share 19 benchmarks with published results for both. Gemini 2.5 Flash-Lite scores higher in 7 categories and o1-mini in 2 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 2.5 Flash-Lite leads 22.2 to 8.8.

## Snapshot

| | Gemini 2.5 Flash-Lite | o1-mini |
|---|---|---|
| Provider | Google | OpenAI |
| Noometry Index | 37.0 | 34.0 |
| Rank | 211 | 235 |
| Context | 1.05M | — |
| Input $/M | $0.10 | — |
| Output $/M | $0.40 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 2.5 Flash-Lite: 38.5 (#173)
- o1-mini: 35.5 (#224)

| Benchmark | Gemini 2.5 Flash-Lite | o1-mini |
|---|---|---|
| WeirdML | 35.2% | 36.3% |
| LMArena Coding | 1373 | 1362 |
| Aider Polyglot | — | 32.9% |
| LiveBench Coding | — | 48% |
| ALE-Bench | 325.9 | — |
| HumanEval+ | — | 89% |
| MBPP+ | — | 78.8% |

## Agentic & Tool Use

- Gemini 2.5 Flash-Lite: 28.0 (#96)
- o1-mini: 24.6 (#118)

| Benchmark | Gemini 2.5 Flash-Lite | o1-mini |
|---|---|---|
| Berkeley Function Calling Leaderboard | 36.9% | — |
| Cybench | — | 10% |

## Reasoning

- Gemini 2.5 Flash-Lite: 22.2 (#205)
- o1-mini: 8.8 (#346)

| Benchmark | Gemini 2.5 Flash-Lite | o1-mini |
|---|---|---|
| LMArena Hard Prompts | 1377 | 1333 |
| Epoch Capabilities Index | 133.94 | 135.82 |
| ARC-AGI-2 | — | 0.8% |
| SimpleBench | — | 18.1% |
| Kagi LLM Benchmark | 40.5% | — |
| ARC-AGI-1 | — | 14% |
| LiveBench Reasoning | — | 72.3% |
| DTBench | 62.8% | — |
| LiveBench Data Analysis | — | 57.9% |
| LMCA | 18.1% | — |
| LiveBench | — | 57.8% |

## Math

- Gemini 2.5 Flash-Lite: 38.0 (#144)
- o1-mini: 35.4 (#186)

| Benchmark | Gemini 2.5 Flash-Lite | o1-mini |
|---|---|---|
| LMArena Math | 1373 | 1358 |
| OTIS Mock AIME 2024-2025 | — | 46.9% |
| Omni-MATH | 48% | — |
| LiveBench Math | — | 62% |
| MATH Level 5 | — | 89.2% |
| FrontierMath (Feb 2025 set) | — | 1.7% |

## Knowledge

- Gemini 2.5 Flash-Lite: 32.5 (#210)
- o1-mini: 34.9 (#192)

| Benchmark | Gemini 2.5 Flash-Lite | o1-mini |
|---|---|---|
| LMArena Expert | 1373 | 1316 |
| GPQA Diamond | — | 62.4% |
| MMLU-Pro | 53.7% | — |
| Confabulations | — | 18.6% |
| Vectara Hallucination Rate | 3.3% | — |
| GPQA (HELM) | 30.9% | — |

## Multimodal

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

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

## Multilingual

- Gemini 2.5 Flash-Lite: 49.3 (#134)
- o1-mini: 43.6 (#182)

| Benchmark | Gemini 2.5 Flash-Lite | o1-mini |
|---|---|---|
| LMArena Non-English | 1369 | 1289 |
| LMArena Chinese | 1404 | 1314 |
| LMArena French | 1388 | 1293 |
| LMArena German | 1389 | 1278 |
| LMArena Japanese | 1359 | 1245 |
| LMArena Korean | 1360 | 1223 |
| LMArena Russian | 1373 | 1283 |
| LMArena Spanish | 1396 | 1303 |

## Instruction Following

- Gemini 2.5 Flash-Lite: 70.0 (#168)
- o1-mini: 66.7 (#206)

| Benchmark | Gemini 2.5 Flash-Lite | o1-mini |
|---|---|---|
| LMArena Instruction Following | 1367 | 1304 |
| LiveBench Instruction Following | — | 65.4% |
| IFEval | 81% | — |

## Long Context

- Gemini 2.5 Flash-Lite: 33.3 (#262)
- o1-mini: 40.1 (#161)

| Benchmark | Gemini 2.5 Flash-Lite | o1-mini |
|---|---|---|
| LMArena Longer Query | 1373 | 1320 |
| Fiction.LiveBench | 47.2% | — |

## Writing & Preference

- Gemini 2.5 Flash-Lite: 56.8 (#135)
- o1-mini: 48.4 (#202)

| Benchmark | Gemini 2.5 Flash-Lite | o1-mini |
|---|---|---|
| LMArena Text | 1379 | 1317 |
| LMArena Creative Writing | 1367 | 1244 |
| LMArena Multi-Turn | 1366 | 1314 |
| Short-Story Creative Writing | — | 64.9% |
| WildBench | 81.8% | — |
| LiveBench Language | — | 40.9% |

## FAQ

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

Gemini 2.5 Flash-Lite is the stronger model overall, scoring 37.0 to 34.0 on the Noometry Index.

### Is Gemini 2.5 Flash-Lite or o1-mini better for coding?

Gemini 2.5 Flash-Lite scores higher on coding benchmarks: 38.5 versus 35.5 in the Noometry coding category.

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

19 benchmarks have published results for both models. Gemini 2.5 Flash-Lite has 33 scored results on Noometry and o1-mini has 39.