# DeepSeek V4.1 Flash vs Gemini 1.5 Flash 8B

> DeepSeek V4.1 Flash is the stronger model overall, scoring 52.8 to 29.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/deepseek-v4-1-flash-vs-gemini-1-5-flash-8b
- Last updated: 2026-10-12
- Shared benchmarks: 21

## Summary

- They share 21 benchmarks with published results for both. DeepSeek V4.1 Flash scores higher in 9 categories and Gemini 1.5 Flash 8B in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where DeepSeek V4.1 Flash leads 66.7 to 14.2.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 98.3% for DeepSeek V4.1 Flash and 4.6% for Gemini 1.5 Flash 8B.
- DeepSeek V4.1 Flash has downloadable open weights; the other is API-only.

## Snapshot

| | DeepSeek V4.1 Flash | Gemini 1.5 Flash 8B |
|---|---|---|
| Provider | DeepSeek | Google |
| Noometry Index | 52.8 | 29.9 |
| Rank | 38 | 301 |
| Context | 1M | — |
| Input $/M | $0.15 | — |
| Output $/M | $0.60 | — |
| Weights | Open | Proprietary |

## Coding

- DeepSeek V4.1 Flash: 52.9 (#32)
- Gemini 1.5 Flash 8B: 35.5 (#225)

| Benchmark | DeepSeek V4.1 Flash | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Coding | 1506 | 1218 |
| LMArena WebDev | 1619 | — |
| SciCode | 51.9% | — |
| ALE-Bench | 1,092 | — |

## Agentic & Tool Use

- DeepSeek V4.1 Flash: 31.2 (#69)
- Gemini 1.5 Flash 8B: —

| Benchmark | DeepSeek V4.1 Flash | Gemini 1.5 Flash 8B |
|---|---|---|
| APEX-Agents | 39.5% | — |
| GDP.pdf | 19.8% | — |

## Reasoning

- DeepSeek V4.1 Flash: 50.2 (#36)
- Gemini 1.5 Flash 8B: 20.0 (#244)

| Benchmark | DeepSeek V4.1 Flash | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Hard Prompts | 1483 | 1209 |
| DTBench | 89.9% | 50% |
| NYT Connections (extended) | 89.6% | — |
| CritPt | 14.3% | — |
| Mystery Game Puzzles | 43% | — |
| LMCA | 47% | — |
| Surface Evolver Bench | 46.3% | — |
| Epoch Capabilities Index | 154.9 | — |

## Math

- DeepSeek V4.1 Flash: 66.7 (#25)
- Gemini 1.5 Flash 8B: 14.2 (#302)

| Benchmark | DeepSeek V4.1 Flash | Gemini 1.5 Flash 8B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 98.3% | 4.6% |
| LMArena Math | 1477 | 1207 |
| FrontierMath (Tiers 1-3) | 67.4% | — |
| FrontierMath Tier 4 | 26.8% | — |
| ProofBench | 54% | — |

## Knowledge

- DeepSeek V4.1 Flash: 57.9 (#38)
- Gemini 1.5 Flash 8B: 16.0 (#289)

| Benchmark | DeepSeek V4.1 Flash | Gemini 1.5 Flash 8B |
|---|---|---|
| GPQA Diamond | 89.8% | 33% |
| LMArena Expert | 1506 | 1185 |

## Multimodal

- DeepSeek V4.1 Flash: 39.1 (#61)
- Gemini 1.5 Flash 8B: 28.2 (#115)

| Benchmark | DeepSeek V4.1 Flash | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Vision | 1277 | 1044 |
| Furniture Assembly | 34.2% | — |

## Multilingual

- DeepSeek V4.1 Flash: 55.0 (#35)
- Gemini 1.5 Flash 8B: 38.5 (#229)

| Benchmark | DeepSeek V4.1 Flash | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Non-English | 1448 | 1215 |
| LMArena Chinese | 1497 | 1231 |
| LMArena French | 1452 | 1234 |
| LMArena German | 1484 | 1206 |
| LMArena Japanese | 1412 | 1150 |
| LMArena Korean | 1452 | 1140 |
| LMArena Russian | 1471 | 1236 |
| LMArena Spanish | 1459 | 1212 |

## Instruction Following

- DeepSeek V4.1 Flash: 77.3 (#26)
- Gemini 1.5 Flash 8B: 62.8 (#236)

| Benchmark | DeepSeek V4.1 Flash | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Instruction Following | 1474 | 1199 |

## Long Context

- DeepSeek V4.1 Flash: 45.2 (#47)
- Gemini 1.5 Flash 8B: 37.0 (#225)

| Benchmark | DeepSeek V4.1 Flash | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Longer Query | 1475 | 1219 |

## Writing & Preference

- DeepSeek V4.1 Flash: 65.4 (#48)
- Gemini 1.5 Flash 8B: 42.8 (#232)

| Benchmark | DeepSeek V4.1 Flash | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Text | 1462 | 1226 |
| LMArena Creative Writing | 1435 | 1218 |
| LMArena Multi-Turn | 1457 | 1185 |
| EQ-Bench Creative Writing | 1540 | — |

## FAQ

### Is DeepSeek V4.1 Flash better than Gemini 1.5 Flash 8B?

DeepSeek V4.1 Flash is the stronger model overall, scoring 52.8 to 29.9 on the Noometry Index.

### Is DeepSeek V4.1 Flash or Gemini 1.5 Flash 8B better for coding?

DeepSeek V4.1 Flash scores higher on coding benchmarks: 52.9 versus 35.5 in the Noometry coding category.

### How many benchmarks do DeepSeek V4.1 Flash and Gemini 1.5 Flash 8B share?

21 benchmarks have published results for both models. DeepSeek V4.1 Flash has 37 scored results on Noometry and Gemini 1.5 Flash 8B has 21.