# Gemini 3 Flash Preview vs Mistral Medium 3.5

> Gemini 3 Flash Preview is the stronger model overall, scoring 52.3 to 40.2 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-3-flash-preview-vs-mistral-medium-3-5
- Last updated: 2026-10-10
- Shared benchmarks: 20

## Summary

- They share 20 benchmarks with published results for both. Gemini 3 Flash Preview scores higher in 9 categories and Mistral Medium 3.5 in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3 Flash Preview leads 49.2 to 17.3.
- The biggest single-benchmark swing is NYT Connections (extended): 83.1% for Gemini 3 Flash Preview and 12.9% for Mistral Medium 3.5.
- Gemini 3 Flash Preview is cheaper at $0.50 / $3 per million input/output tokens, against $1.50 / $7.50 for Mistral Medium 3.5.
- Gemini 3 Flash Preview accepts more context: 1.05M tokens versus 262K.
- Mistral Medium 3.5 has downloadable open weights; the other is API-only.

## Snapshot

| | Gemini 3 Flash Preview | Mistral Medium 3.5 |
|---|---|---|
| Provider | Google | Mistral AI |
| Noometry Index | 52.3 | 40.2 |
| Rank | 40 | 152 |
| Context | 1.05M | 262K |
| Input $/M | $0.50 | $1.50 |
| Output $/M | $3 | $7.50 |
| Weights | Proprietary | Open |

## Coding

- Gemini 3 Flash Preview: 50.9 (#42)
- Mistral Medium 3.5: 36.0 (#213)

| Benchmark | Gemini 3 Flash Preview | Mistral Medium 3.5 |
|---|---|---|
| LMArena WebDev | 1439 | 1264 |
| LMArena Coding | 1460 | 1461 |
| SWE-bench Verified | 75.4% | — |
| SWE-bench Verified (bash only) | 75.8% | — |
| SWE-bench Multilingual | 72.7% | — |
| GSO | 9.8% | — |
| WeirdML | 61.6% | — |
| ALE-Bench | 1,367 | — |

## Agentic & Tool Use

- Gemini 3 Flash Preview: 38.7 (#29)
- Mistral Medium 3.5: —

| Benchmark | Gemini 3 Flash Preview | Mistral Medium 3.5 |
|---|---|---|
| Terminal-Bench | 64.3% | — |
| τ²-bench Airline | 82.5% | — |
| τ²-bench Banking | 27.3% | — |
| τ²-bench Retail | 76.8% | — |
| τ²-bench Telecom | 91.2% | — |
| DeepResearch Bench | 49.8% | — |
| BALROG | 48.1% | — |
| GDP.pdf | 10% | — |
| LMArena Search | 1198 | — |
| Vending-Bench 2 | 3,635 | — |

## Reasoning

- Gemini 3 Flash Preview: 49.2 (#37)
- Mistral Medium 3.5: 17.3 (#295)

| Benchmark | Gemini 3 Flash Preview | Mistral Medium 3.5 |
|---|---|---|
| NYT Connections (extended) | 83.1% | 12.9% |
| LMArena Hard Prompts | 1465 | 1436 |
| Epoch Capabilities Index | 151.8 | 141.35 |
| ARC-AGI-2 | 33.6% | — |
| SimpleBench | 61.1% | — |
| Kagi LLM Benchmark | — | 41.4% |
| ARC-AGI-1 | 84.7% | — |
| Chess Puzzles | 40% | — |
| Mystery Game Puzzles | 26% | — |
| DTBench | 89.1% | — |
| LMCA | 43.1% | — |
| ForecastBench | 58.5 | — |

## Math

- Gemini 3 Flash Preview: 51.7 (#55)
- Mistral Medium 3.5: 39.1 (#113)

| Benchmark | Gemini 3 Flash Preview | Mistral Medium 3.5 |
|---|---|---|
| LMArena Math | 1473 | 1431 |
| FrontierMath (Tiers 1-3) | 51.2% | — |
| FrontierMath Tier 4 | 17.1% | — |
| MathArena Final-Answer Competitions | 67.6% | — |
| OTIS Mock AIME 2024-2025 | 95.6% | — |
| ProofBench | 15% | — |
| FrontierMath (Feb 2025 set) | 35.6% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |

## Knowledge

- Gemini 3 Flash Preview: 58.8 (#33)
- Mistral Medium 3.5: 40.0 (#126)

| Benchmark | Gemini 3 Flash Preview | Mistral Medium 3.5 |
|---|---|---|
| LMArena Expert | 1462 | 1432 |
| GPQA Diamond | 89.4% | — |
| SimpleQA Verified | 66.8% | — |
| Vectara Hallucination Rate | 13.5% | — |

## Multimodal

- Gemini 3 Flash Preview: 45.5 (#16)
- Mistral Medium 3.5: 38.3 (#65)

| Benchmark | Gemini 3 Flash Preview | Mistral Medium 3.5 |
|---|---|---|
| LMArena Vision | 1285 | 1223 |
| GeoBench | 88% | — |
| VPCT | 72.6% | — |
| Blueprint-Bench 2 | 0% | — |
| LMArena Document | 1413 | — |

## Multilingual

- Gemini 3 Flash Preview: 55.7 (#27)
- Mistral Medium 3.5: 51.9 (#100)

| Benchmark | Gemini 3 Flash Preview | Mistral Medium 3.5 |
|---|---|---|
| LMArena Non-English | 1458 | 1404 |
| LMArena Chinese | 1511 | 1442 |
| LMArena French | 1477 | 1448 |
| LMArena German | 1497 | 1451 |
| LMArena Korean | 1443 | 1385 |
| LMArena Russian | 1480 | 1395 |
| LMArena Spanish | 1469 | 1409 |
| LMArena Japanese | 1489 | — |

## Instruction Following

- Gemini 3 Flash Preview: 75.7 (#56)
- Mistral Medium 3.5: 74.6 (#90)

| Benchmark | Gemini 3 Flash Preview | Mistral Medium 3.5 |
|---|---|---|
| LMArena Instruction Following | 1437 | 1415 |

## Long Context

- Gemini 3 Flash Preview: 44.4 (#67)
- Mistral Medium 3.5: 43.2 (#103)

| Benchmark | Gemini 3 Flash Preview | Mistral Medium 3.5 |
|---|---|---|
| LMArena Longer Query | 1452 | 1415 |

## Writing & Preference

- Gemini 3 Flash Preview: 65.5 (#45)
- Mistral Medium 3.5: 58.5 (#117)

| Benchmark | Gemini 3 Flash Preview | Mistral Medium 3.5 |
|---|---|---|
| LMArena Text | 1466 | 1421 |
| LMArena Creative Writing | 1457 | 1374 |
| LMArena Multi-Turn | 1471 | 1423 |
| EQ-Bench 4 | — | 993 |

## FAQ

### Is Gemini 3 Flash Preview better than Mistral Medium 3.5?

Gemini 3 Flash Preview is the stronger model overall, scoring 52.3 to 40.2 on the Noometry Index.

### Which is cheaper, Gemini 3 Flash Preview or Mistral Medium 3.5?

Gemini 3 Flash Preview is cheaper. It lists at $0.50 per million input tokens and $3 per million output tokens; Mistral Medium 3.5 lists at $1.50 and $7.50.

### Is Gemini 3 Flash Preview or Mistral Medium 3.5 better for coding?

Gemini 3 Flash Preview scores higher on coding benchmarks: 50.9 versus 36.0 in the Noometry coding category.

### Which has the bigger context window?

Gemini 3 Flash Preview does, with 1.05M tokens against 262K.

### How many benchmarks do Gemini 3 Flash Preview and Mistral Medium 3.5 share?

20 benchmarks have published results for both models. Gemini 3 Flash Preview has 59 scored results on Noometry and Mistral Medium 3.5 has 22.