# Mistral Medium 3.5 vs Step 3.7 Flash

> Mistral Medium 3.5 is the stronger model overall, scoring 40.2 to 37.3 on the Noometry Index. Step 3.7 Flash costs 7.2× less per token, which makes it the better buy when Mistral Medium 3.5's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/mistral-medium-3-5-vs-step-3-7-flash
- Last updated: 2026-10-10
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. Mistral Medium 3.5 scores higher in 0 categories and Step 3.7 Flash in 3 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Step 3.7 Flash leads 21.6 to 17.3.
- The biggest single-benchmark swing is NYT Connections (extended): 12.9% for Mistral Medium 3.5 and 39.7% for Step 3.7 Flash.
- Step 3.7 Flash is cheaper at $0.18 / $1.11 per million input/output tokens, against $1.50 / $7.50 for Mistral Medium 3.5.
- Mistral Medium 3.5 accepts more context: 262K tokens versus 256K.

## Snapshot

| | Mistral Medium 3.5 | Step 3.7 Flash |
|---|---|---|
| Provider | Mistral AI | StepFun |
| Noometry Index | 40.2 | 37.3 |
| Rank | 152 | 207 |
| Context | 262K | 256K |
| Input $/M | $1.50 | $0.18 |
| Output $/M | $7.50 | $1.11 |
| Weights | Open | Open |

## Coding

- Mistral Medium 3.5: 36.0 (#213)
- Step 3.7 Flash: 40.0 (#150)

| Benchmark | Mistral Medium 3.5 | Step 3.7 Flash |
|---|---|---|
| LMArena WebDev | 1264 | — |
| SciCode | — | 40% |
| LMArena Coding | 1461 | — |
| ALE-Bench | — | 694.12 |

## Reasoning

- Mistral Medium 3.5: 17.3 (#295)
- Step 3.7 Flash: 21.6 (#219)

| Benchmark | Mistral Medium 3.5 | Step 3.7 Flash |
|---|---|---|
| NYT Connections (extended) | 12.9% | 39.7% |
| Kagi LLM Benchmark | 41.4% | — |
| CritPt | — | 2.3% |
| LMArena Hard Prompts | 1436 | — |
| Epoch Capabilities Index | 141.35 | — |

## Math

- Mistral Medium 3.5: 39.1 (#113)
- Step 3.7 Flash: 42.9 (#82)

| Benchmark | Mistral Medium 3.5 | Step 3.7 Flash |
|---|---|---|
| MathArena Final-Answer Competitions | — | 68.5% |
| LMArena Math | 1431 | — |

## Knowledge

- Mistral Medium 3.5: 40.0 (#126)
- Step 3.7 Flash: —

| Benchmark | Mistral Medium 3.5 | Step 3.7 Flash |
|---|---|---|
| LMArena Expert | 1432 | — |

## Multimodal

- Mistral Medium 3.5: 38.3 (#65)
- Step 3.7 Flash: —

| Benchmark | Mistral Medium 3.5 | Step 3.7 Flash |
|---|---|---|
| LMArena Vision | 1223 | — |

## Multilingual

- Mistral Medium 3.5: 51.9 (#100)
- Step 3.7 Flash: —

| Benchmark | Mistral Medium 3.5 | Step 3.7 Flash |
|---|---|---|
| LMArena Non-English | 1404 | — |
| LMArena Chinese | 1442 | — |
| LMArena French | 1448 | — |
| LMArena German | 1451 | — |
| LMArena Korean | 1385 | — |
| LMArena Russian | 1395 | — |
| LMArena Spanish | 1409 | — |

## Instruction Following

- Mistral Medium 3.5: 74.6 (#90)
- Step 3.7 Flash: —

| Benchmark | Mistral Medium 3.5 | Step 3.7 Flash |
|---|---|---|
| LMArena Instruction Following | 1415 | — |

## Long Context

- Mistral Medium 3.5: 43.2 (#103)
- Step 3.7 Flash: —

| Benchmark | Mistral Medium 3.5 | Step 3.7 Flash |
|---|---|---|
| LMArena Longer Query | 1415 | — |

## Writing & Preference

- Mistral Medium 3.5: 58.5 (#117)
- Step 3.7 Flash: —

| Benchmark | Mistral Medium 3.5 | Step 3.7 Flash |
|---|---|---|
| LMArena Text | 1421 | — |
| LMArena Creative Writing | 1374 | — |
| EQ-Bench 4 | 993 | — |
| LMArena Multi-Turn | 1423 | — |

## FAQ

### Is Mistral Medium 3.5 better than Step 3.7 Flash?

Mistral Medium 3.5 is the stronger model overall, scoring 40.2 to 37.3 on the Noometry Index. Step 3.7 Flash costs 7.2× less per token, which makes it the better buy when Mistral Medium 3.5's lead doesn't matter for your workload.

### Which is cheaper, Mistral Medium 3.5 or Step 3.7 Flash?

Step 3.7 Flash is cheaper. It lists at $0.18 per million input tokens and $1.11 per million output tokens; Mistral Medium 3.5 lists at $1.50 and $7.50.

### Is Mistral Medium 3.5 or Step 3.7 Flash better for coding?

Step 3.7 Flash scores higher on coding benchmarks: 40.0 versus 36.0 in the Noometry coding category.

### Which has the bigger context window?

Mistral Medium 3.5 does, with 262K tokens against 256K.

### How many benchmarks do Mistral Medium 3.5 and Step 3.7 Flash share?

1 benchmark has published results for both models. Mistral Medium 3.5 has 22 scored results on Noometry and Step 3.7 Flash has 5.