# DeepSeek V4.1 Flash vs Devstral 2

> DeepSeek V4.1 Flash has enough public results to be ranked (#40); Devstral 2 does not yet, so treat this comparison as directional.

- Canonical page: https://noometry.com/compare/deepseek-v4-1-flash-vs-devstral-2
- Last updated: 2026-10-10
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. DeepSeek V4.1 Flash scores higher in 1 category and Devstral 2 in 0 categories; one gap is clear of the uncertainty.
- The widest gap is in coding, where DeepSeek V4.1 Flash leads 52.8 to 33.0.
- DeepSeek V4.1 Flash is cheaper at $0.15 / $0.60 per million input/output tokens, against $0.40 / $2 for Devstral 2.
- DeepSeek V4.1 Flash accepts more context: 1M tokens versus 262K.

## Snapshot

| | DeepSeek V4.1 Flash | Devstral 2 |
|---|---|---|
| Provider | DeepSeek | Mistral AI |
| Noometry Index | 50.3 | 35.8 |
| Rank | 40 | — |
| Context | 1M | 262K |
| Input $/M | $0.15 | $0.40 |
| Output $/M | $0.60 | $2 |
| Weights | Open | Open |

## Coding

- DeepSeek V4.1 Flash: 52.8 (#29)
- Devstral 2: 33.0 (#253)

| Benchmark | DeepSeek V4.1 Flash | Devstral 2 |
|---|---|---|
| LMArena WebDev | 1620 | 1196 |
| SWE-bench Verified (bash only) | — | 53.8% |
| SciCode | 51.9% | — |
| LMArena Coding | 1511 | — |
| ALE-Bench | 1,092 | — |

## Reasoning

- DeepSeek V4.1 Flash: 46.2 (#39)
- Devstral 2: —

| Benchmark | DeepSeek V4.1 Flash | Devstral 2 |
|---|---|---|
| NYT Connections (extended) | 89.6% | — |
| CritPt | 14.3% | — |
| LMArena Hard Prompts | 1485 | — |
| DTBench | 89.9% | — |
| LMCA | 47% | — |
| Surface Evolver Bench | 46.3% | — |
| Epoch Capabilities Index | 155.01 | — |

## Math

- DeepSeek V4.1 Flash: 48.4 (#52)
- Devstral 2: —

| Benchmark | DeepSeek V4.1 Flash | Devstral 2 |
|---|---|---|
| ProofBench | 54% | — |
| LMArena Math | 1493 | — |

## Knowledge

- DeepSeek V4.1 Flash: 41.6 (#97)
- Devstral 2: —

| Benchmark | DeepSeek V4.1 Flash | Devstral 2 |
|---|---|---|
| LMArena Expert | 1505 | — |

## Multilingual

- DeepSeek V4.1 Flash: 55.5 (#29)
- Devstral 2: —

| Benchmark | DeepSeek V4.1 Flash | Devstral 2 |
|---|---|---|
| LMArena Non-English | 1452 | — |
| LMArena Chinese | 1506 | — |
| LMArena French | 1448 | — |
| LMArena Russian | 1473 | — |
| LMArena Spanish | 1499 | — |

## Instruction Following

- DeepSeek V4.1 Flash: 77.6 (#24)
- Devstral 2: —

| Benchmark | DeepSeek V4.1 Flash | Devstral 2 |
|---|---|---|
| LMArena Instruction Following | 1475 | — |

## Long Context

- DeepSeek V4.1 Flash: 45.2 (#46)
- Devstral 2: —

| Benchmark | DeepSeek V4.1 Flash | Devstral 2 |
|---|---|---|
| LMArena Longer Query | 1476 | — |

## Writing & Preference

- DeepSeek V4.1 Flash: 65.8 (#43)
- Devstral 2: —

| Benchmark | DeepSeek V4.1 Flash | Devstral 2 |
|---|---|---|
| LMArena Text | 1465 | — |
| LMArena Creative Writing | 1436 | — |
| EQ-Bench Creative Writing | 1540 | — |
| LMArena Multi-Turn | 1460 | — |

## FAQ

### Is DeepSeek V4.1 Flash better than Devstral 2?

DeepSeek V4.1 Flash has enough public results to be ranked (#40); Devstral 2 does not yet, so treat this comparison as directional.

### Which is cheaper, DeepSeek V4.1 Flash or Devstral 2?

DeepSeek V4.1 Flash is cheaper. It lists at $0.15 per million input tokens and $0.60 per million output tokens; Devstral 2 lists at $0.40 and $2.

### Is DeepSeek V4.1 Flash or Devstral 2 better for coding?

DeepSeek V4.1 Flash scores higher on coding benchmarks: 52.8 versus 33.0 in the Noometry coding category.

### Which has the bigger context window?

DeepSeek V4.1 Flash does, with 1M tokens against 262K.

### How many benchmarks do DeepSeek V4.1 Flash and Devstral 2 share?

1 benchmark has published results for both models. DeepSeek V4.1 Flash has 25 scored results on Noometry and Devstral 2 has 2.