# Gemini 3.1 Flash Lite vs Mistral Small 3.1

> Gemini 3.1 Flash Lite is the stronger model overall, scoring 40.8 to 31.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-3-1-flash-lite-vs-mistral-small-3-1
- Last updated: 2026-10-12
- Shared benchmarks: 22

## Summary

- They share 22 benchmarks with published results for both. Gemini 3.1 Flash Lite scores higher in 8 categories and Mistral Small 3.1 in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Gemini 3.1 Flash Lite leads 40.7 to 14.7.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 80% for Gemini 3.1 Flash Lite and 3.9% for Mistral Small 3.1.
- Mistral Small 3.1 is cheaper at $0.35 / $0.56 per million input/output tokens, against $0.25 / $1.50 for Gemini 3.1 Flash Lite.
- Gemini 3.1 Flash Lite accepts more context: 1.05M tokens versus 128K.
- Mistral Small 3.1 has downloadable open weights; the other is API-only.

## Snapshot

| | Gemini 3.1 Flash Lite | Mistral Small 3.1 |
|---|---|---|
| Provider | Google | Mistral AI |
| Noometry Index | 40.8 | 31.7 |
| Rank | 144 | 269 |
| Context | 1.05M | 128K |
| Input $/M | $0.25 | $0.35 |
| Output $/M | $1.50 | $0.56 |
| Weights | Proprietary | Open |

## Coding

- Gemini 3.1 Flash Lite: 37.8 (#188)
- Mistral Small 3.1: 38.3 (#179)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Small 3.1 |
|---|---|---|
| LMArena Coding | 1400 | 1309 |
| LMArena WebDev | 1256 | — |
| SciCode | 41.9% | — |
| WeirdML | 52.2% | — |
| ALE-Bench | 797.73 | — |

## Agentic & Tool Use

- Gemini 3.1 Flash Lite: 30.2 (#79)
- Mistral Small 3.1: —

| Benchmark | Gemini 3.1 Flash Lite | Mistral Small 3.1 |
|---|---|---|
| DeepResearch Bench | 37.3% | — |

## Reasoning

- Gemini 3.1 Flash Lite: 22.9 (#186)
- Mistral Small 3.1: 19.7 (#254)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Small 3.1 |
|---|---|---|
| Chess Puzzles | 25% | 1% |
| LMArena Hard Prompts | 1407 | 1278 |
| Epoch Capabilities Index | 144.47 | 127.48 |
| Kagi LLM Benchmark | 67.2% | — |
| NYT Connections (extended) | 8.2% | — |
| CritPt | 1.1% | — |
| EnigmaEval | 3% | — |
| Thematic Generalization | 63.3% | — |
| DTBench | 76.8% | — |
| LMCA | 35% | — |
| ForecastBench | 54.4 | — |

## Math

- Gemini 3.1 Flash Lite: 40.7 (#90)
- Mistral Small 3.1: 14.7 (#301)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Small 3.1 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 80% | 3.9% |
| LMArena Math | 1428 | 1262 |
| FrontierMath (Tiers 1-3) | 27.7% | — |
| Omni-MATH | — | 24.8% |

## Knowledge

- Gemini 3.1 Flash Lite: 41.9 (#104)
- Mistral Small 3.1: 22.6 (#271)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Small 3.1 |
|---|---|---|
| GPQA Diamond | 81.8% | 41.9% |
| LMArena Expert | 1398 | 1257 |
| Humanity's Last Exam | 8.6% | — |
| MMLU-Pro | — | 61% |
| Vectara Hallucination Rate | 8.2% | — |
| GPQA (HELM) | — | 39.2% |

## Multimodal

- Gemini 3.1 Flash Lite: 39.4 (#60)
- Mistral Small 3.1: 33.2 (#99)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Small 3.1 |
|---|---|---|
| LMArena Vision | 1240 | 1136 |

## Multilingual

- Gemini 3.1 Flash Lite: 52.3 (#86)
- Mistral Small 3.1: 41.2 (#209)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Small 3.1 |
|---|---|---|
| LMArena Non-English | 1411 | 1255 |
| LMArena Chinese | 1461 | 1253 |
| LMArena French | 1424 | 1273 |
| LMArena German | 1429 | 1266 |
| LMArena Japanese | 1413 | 1208 |
| LMArena Korean | 1392 | 1206 |
| LMArena Russian | 1420 | 1263 |
| LMArena Spanish | 1421 | 1283 |

## Instruction Following

- Gemini 3.1 Flash Lite: 72.7 (#131)
- Mistral Small 3.1: 63.6 (#230)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Small 3.1 |
|---|---|---|
| LMArena Instruction Following | 1377 | 1264 |
| IFEval | — | 75% |

## Long Context

- Gemini 3.1 Flash Lite: 42.5 (#122)
- Mistral Small 3.1: 39.5 (#178)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Small 3.1 |
|---|---|---|
| LMArena Longer Query | 1394 | 1299 |

## Writing & Preference

- Gemini 3.1 Flash Lite: 60.9 (#94)
- Mistral Small 3.1: 37.0 (#259)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Small 3.1 |
|---|---|---|
| LMArena Text | 1416 | 1277 |
| LMArena Creative Writing | 1401 | 1253 |
| LMArena Multi-Turn | 1417 | 1270 |
| EQ-Bench Creative Writing | — | 761 |
| WildBench | — | 78.8% |

## FAQ

### Is Gemini 3.1 Flash Lite better than Mistral Small 3.1?

Gemini 3.1 Flash Lite is the stronger model overall, scoring 40.8 to 31.7 on the Noometry Index.

### Which is cheaper, Gemini 3.1 Flash Lite or Mistral Small 3.1?

Mistral Small 3.1 is cheaper. It lists at $0.35 per million input tokens and $0.56 per million output tokens; Gemini 3.1 Flash Lite lists at $0.25 and $1.50.

### Is Gemini 3.1 Flash Lite or Mistral Small 3.1 better for coding?

They score almost the same on coding (37.8 vs 38.3); test both on your own repository before choosing.

### Which has the bigger context window?

Gemini 3.1 Flash Lite does, with 1.05M tokens against 128K.

### How many benchmarks do Gemini 3.1 Flash Lite and Mistral Small 3.1 share?

22 benchmarks have published results for both models. Gemini 3.1 Flash Lite has 38 scored results on Noometry and Mistral Small 3.1 has 28.