# Gemini 3.1 Flash Lite vs Mistral Medium 3.5

> Gemini 3.1 Flash Lite and Mistral Medium 3.5 score almost the same on the Noometry Index (40.4 vs 39.6), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/gemini-3-1-flash-lite-vs-mistral-medium-3-5
- Last updated: 2026-10-10
- Shared benchmarks: 21

## Summary

- They share 21 benchmarks with published results for both. Gemini 3.1 Flash Lite scores higher in 7 categories and Mistral Medium 3.5 in 2 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3.1 Flash Lite leads 22.3 to 16.6.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 67.2% for Gemini 3.1 Flash Lite and 41.4% for Mistral Medium 3.5.
- Gemini 3.1 Flash Lite is cheaper at $0.25 / $1.50 per million input/output tokens, against $1.50 / $7.50 for Mistral Medium 3.5.
- Gemini 3.1 Flash Lite accepts more context: 1.05M tokens versus 262K.
- Mistral Medium 3.5 has downloadable open weights; the other is API-only.

## Snapshot

| | Gemini 3.1 Flash Lite | Mistral Medium 3.5 |
|---|---|---|
| Provider | Google | Mistral AI |
| Noometry Index | 40.4 | 39.6 |
| Rank | 141 | 151 |
| Context | 1.05M | 262K |
| Input $/M | $0.25 | $1.50 |
| Output $/M | $1.50 | $7.50 |
| Weights | Proprietary | Open |

## Coding

- Gemini 3.1 Flash Lite: 37.5 (#179)
- Mistral Medium 3.5: 35.7 (#208)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Medium 3.5 |
|---|---|---|
| LMArena WebDev | 1256 | 1263 |
| LMArena Coding | 1400 | 1461 |
| SciCode | 41.9% | — |
| WeirdML | 52.2% | — |
| ALE-Bench | 797.73 | — |

## Agentic & Tool Use

- Gemini 3.1 Flash Lite: 29.9 (#72)
- Mistral Medium 3.5: —

| Benchmark | Gemini 3.1 Flash Lite | Mistral Medium 3.5 |
|---|---|---|
| DeepResearch Bench | 37.3% | — |

## Reasoning

- Gemini 3.1 Flash Lite: 22.3 (#181)
- Mistral Medium 3.5: 16.6 (#290)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Medium 3.5 |
|---|---|---|
| Kagi LLM Benchmark | 67.2% | 41.4% |
| NYT Connections (extended) | 8.2% | 12.9% |
| LMArena Hard Prompts | 1407 | 1436 |
| Epoch Capabilities Index | 144.45 | 141.42 |
| CritPt | 1.1% | — |
| Chess Puzzles | 25% | — |
| EnigmaEval | 3% | — |
| Thematic Generalization | 63.3% | — |
| DTBench | 76.8% | — |
| LMCA | 35% | — |
| ForecastBench | 54.4 | — |

## Math

- Gemini 3.1 Flash Lite: 39.5 (#82)
- Mistral Medium 3.5: 36.4 (#113)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Medium 3.5 |
|---|---|---|
| LMArena Math | 1427 | 1432 |
| FrontierMath (Tiers 1-3) | 27.7% | — |
| OTIS Mock AIME 2024-2025 | 80% | — |

## Knowledge

- Gemini 3.1 Flash Lite: 41.7 (#95)
- Mistral Medium 3.5: 39.3 (#123)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Medium 3.5 |
|---|---|---|
| LMArena Expert | 1397 | 1431 |
| GPQA Diamond | 81.8% | — |
| Humanity's Last Exam | 8.6% | — |
| Vectara Hallucination Rate | 8.2% | — |

## Multimodal

- Gemini 3.1 Flash Lite: 38.7 (#57)
- Mistral Medium 3.5: 37.6 (#64)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Medium 3.5 |
|---|---|---|
| LMArena Vision | 1240 | 1222 |

## Multilingual

- Gemini 3.1 Flash Lite: 52.5 (#82)
- Mistral Medium 3.5: 52.1 (#93)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Medium 3.5 |
|---|---|---|
| LMArena Non-English | 1410 | 1405 |
| LMArena Chinese | 1461 | 1443 |
| LMArena French | 1423 | 1448 |
| LMArena German | 1429 | 1453 |
| LMArena Korean | 1393 | 1387 |
| LMArena Russian | 1420 | 1396 |
| LMArena Spanish | 1420 | 1406 |
| LMArena Japanese | 1411 | — |

## Instruction Following

- Gemini 3.1 Flash Lite: 72.9 (#126)
- Mistral Medium 3.5: 74.7 (#87)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Medium 3.5 |
|---|---|---|
| LMArena Instruction Following | 1376 | 1414 |

## Long Context

- Gemini 3.1 Flash Lite: 42.5 (#117)
- Mistral Medium 3.5: 43.2 (#101)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Medium 3.5 |
|---|---|---|
| LMArena Longer Query | 1394 | 1414 |

## Writing & Preference

- Gemini 3.1 Flash Lite: 61.0 (#90)
- Mistral Medium 3.5: 58.6 (#113)

| Benchmark | Gemini 3.1 Flash Lite | Mistral Medium 3.5 |
|---|---|---|
| LMArena Text | 1416 | 1421 |
| LMArena Creative Writing | 1401 | 1372 |
| LMArena Multi-Turn | 1417 | 1423 |
| EQ-Bench 4 | — | 993 |

## FAQ

### Is Gemini 3.1 Flash Lite better than Mistral Medium 3.5?

Gemini 3.1 Flash Lite and Mistral Medium 3.5 score almost the same on the Noometry Index (40.4 vs 39.6), so choose on price, context window or the category you care about most.

### Which is cheaper, Gemini 3.1 Flash Lite or Mistral Medium 3.5?

Gemini 3.1 Flash Lite is cheaper. It lists at $0.25 per million input tokens and $1.50 per million output tokens; Mistral Medium 3.5 lists at $1.50 and $7.50.

### Is Gemini 3.1 Flash Lite or Mistral Medium 3.5 better for coding?

Gemini 3.1 Flash Lite scores higher on coding benchmarks: 37.5 versus 35.7 in the Noometry coding category.

### Which has the bigger context window?

Gemini 3.1 Flash Lite does, with 1.05M tokens against 262K.

### How many benchmarks do Gemini 3.1 Flash Lite and Mistral Medium 3.5 share?

21 benchmarks have published results for both models. Gemini 3.1 Flash Lite has 38 scored results on Noometry and Mistral Medium 3.5 has 22.