# DeepSeek V4.1 Flash vs MiMo-V2-Omni

> DeepSeek V4.1 Flash is the stronger model overall, scoring 52.8 to 43.6 on the Noometry Index.

- Canonical page: https://noometry.com/compare/deepseek-v4-1-flash-vs-mimo-v2-omni
- Last updated: 2026-10-12
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. DeepSeek V4.1 Flash scores higher in 9 categories and MiMo-V2-Omni in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where DeepSeek V4.1 Flash leads 66.7 to 39.1.
- MiMo-V2-Omni is cheaper at $0.14 / $0.28 per million input/output tokens, against $0.15 / $0.60 for DeepSeek V4.1 Flash.
- DeepSeek V4.1 Flash accepts more context: 1M tokens versus 262K.
- DeepSeek V4.1 Flash has downloadable open weights; the other is API-only.

## Snapshot

| | DeepSeek V4.1 Flash | MiMo-V2-Omni |
|---|---|---|
| Provider | DeepSeek | Xiaomi |
| Noometry Index | 52.8 | 43.6 |
| Rank | 38 | 88 |
| Context | 1M | 262K |
| Input $/M | $0.15 | $0.14 |
| Output $/M | $0.60 | $0.28 |
| Weights | Open | Proprietary |

## Coding

- DeepSeek V4.1 Flash: 52.9 (#32)
- MiMo-V2-Omni: 43.3 (#89)

| Benchmark | DeepSeek V4.1 Flash | MiMo-V2-Omni |
|---|---|---|
| LMArena Coding | 1506 | 1466 |
| LMArena WebDev | 1619 | — |
| SciCode | 51.9% | — |
| ALE-Bench | 1,092 | — |

## Agentic & Tool Use

- DeepSeek V4.1 Flash: 31.2 (#69)
- MiMo-V2-Omni: —

| Benchmark | DeepSeek V4.1 Flash | MiMo-V2-Omni |
|---|---|---|
| APEX-Agents | 39.5% | — |
| GDP.pdf | 19.8% | — |

## Reasoning

- DeepSeek V4.1 Flash: 50.2 (#36)
- MiMo-V2-Omni: 29.7 (#88)

| Benchmark | DeepSeek V4.1 Flash | MiMo-V2-Omni |
|---|---|---|
| LMArena Hard Prompts | 1483 | 1445 |
| NYT Connections (extended) | 89.6% | — |
| CritPt | 14.3% | — |
| Mystery Game Puzzles | 43% | — |
| DTBench | 89.9% | — |
| LMCA | 47% | — |
| Surface Evolver Bench | 46.3% | — |
| Epoch Capabilities Index | 154.9 | — |

## Math

- DeepSeek V4.1 Flash: 66.7 (#25)
- MiMo-V2-Omni: 39.1 (#115)

| Benchmark | DeepSeek V4.1 Flash | MiMo-V2-Omni |
|---|---|---|
| LMArena Math | 1477 | 1430 |
| FrontierMath (Tiers 1-3) | 67.4% | — |
| FrontierMath Tier 4 | 26.8% | — |
| OTIS Mock AIME 2024-2025 | 98.3% | — |
| ProofBench | 54% | — |

## Knowledge

- DeepSeek V4.1 Flash: 57.9 (#38)
- MiMo-V2-Omni: 40.5 (#118)

| Benchmark | DeepSeek V4.1 Flash | MiMo-V2-Omni |
|---|---|---|
| LMArena Expert | 1506 | 1449 |
| GPQA Diamond | 89.8% | — |

## Multimodal

- DeepSeek V4.1 Flash: 39.1 (#61)
- MiMo-V2-Omni: 38.6 (#63)

| Benchmark | DeepSeek V4.1 Flash | MiMo-V2-Omni |
|---|---|---|
| LMArena Vision | 1277 | 1228 |
| Furniture Assembly | 34.2% | — |

## Multilingual

- DeepSeek V4.1 Flash: 55.0 (#35)
- MiMo-V2-Omni: 51.8 (#102)

| Benchmark | DeepSeek V4.1 Flash | MiMo-V2-Omni |
|---|---|---|
| LMArena Non-English | 1448 | 1404 |
| LMArena Chinese | 1497 | 1465 |
| LMArena French | 1452 | 1447 |
| LMArena German | 1484 | 1399 |
| LMArena Japanese | 1412 | 1317 |
| LMArena Korean | 1452 | 1355 |
| LMArena Russian | 1471 | 1412 |
| LMArena Spanish | 1459 | 1434 |

## Instruction Following

- DeepSeek V4.1 Flash: 77.3 (#26)
- MiMo-V2-Omni: 75.2 (#66)

| Benchmark | DeepSeek V4.1 Flash | MiMo-V2-Omni |
|---|---|---|
| LMArena Instruction Following | 1474 | 1428 |

## Long Context

- DeepSeek V4.1 Flash: 45.2 (#47)
- MiMo-V2-Omni: 44.1 (#76)

| Benchmark | DeepSeek V4.1 Flash | MiMo-V2-Omni |
|---|---|---|
| LMArena Longer Query | 1475 | 1442 |

## Writing & Preference

- DeepSeek V4.1 Flash: 65.4 (#48)
- MiMo-V2-Omni: 61.4 (#87)

| Benchmark | DeepSeek V4.1 Flash | MiMo-V2-Omni |
|---|---|---|
| LMArena Text | 1462 | 1423 |
| LMArena Creative Writing | 1435 | 1392 |
| LMArena Multi-Turn | 1457 | 1445 |
| EQ-Bench Creative Writing | 1540 | — |

## FAQ

### Is DeepSeek V4.1 Flash better than MiMo-V2-Omni?

DeepSeek V4.1 Flash is the stronger model overall, scoring 52.8 to 43.6 on the Noometry Index.

### Which is cheaper, DeepSeek V4.1 Flash or MiMo-V2-Omni?

MiMo-V2-Omni is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; DeepSeek V4.1 Flash lists at $0.15 and $0.60.

### Is DeepSeek V4.1 Flash or MiMo-V2-Omni better for coding?

DeepSeek V4.1 Flash scores higher on coding benchmarks: 52.9 versus 43.3 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 MiMo-V2-Omni share?

18 benchmarks have published results for both models. DeepSeek V4.1 Flash has 37 scored results on Noometry and MiMo-V2-Omni has 18.