# DeepSeek V4.1 Flash vs Phi-4

> DeepSeek V4.1 Flash is the stronger model overall, scoring 50.3 to 30.9 on the Noometry Index. Phi-4 costs 3.0× less per token, which makes it the better buy when DeepSeek V4.1 Flash's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/deepseek-v4-1-flash-vs-phi-4
- Last updated: 2026-10-10
- Shared benchmarks: 15

## Summary

- They share 15 benchmarks with published results for both. DeepSeek V4.1 Flash scores higher in 8 categories and Phi-4 in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where DeepSeek V4.1 Flash leads 46.2 to 17.0.
- Phi-4 is cheaper at $0.07 / $0.14 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 128K.

## Snapshot

| | DeepSeek V4.1 Flash | Phi-4 |
|---|---|---|
| Provider | DeepSeek | Microsoft |
| Noometry Index | 50.3 | 30.9 |
| Rank | 40 | 269 |
| Context | 1M | 128K |
| Input $/M | $0.15 | $0.07 |
| Output $/M | $0.60 | $0.14 |
| Weights | Open | Open |

## Coding

- DeepSeek V4.1 Flash: 52.8 (#29)
- Phi-4: 33.8 (#237)

| Benchmark | DeepSeek V4.1 Flash | Phi-4 |
|---|---|---|
| LMArena Coding | 1511 | 1231 |
| LMArena WebDev | 1620 | — |
| SciCode | 51.9% | — |
| BigCodeBench Instruct | — | 45.5% |
| LiveBench Coding | — | 30.7% |
| BigCodeBench Complete | — | 55.4% |
| ALE-Bench | 1,092 | — |

## Agentic & Tool Use

- DeepSeek V4.1 Flash: —
- Phi-4: 22.6 (#120)

| Benchmark | DeepSeek V4.1 Flash | Phi-4 |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 28.8% |
| BALROG | — | 11.6% |

## Reasoning

- DeepSeek V4.1 Flash: 46.2 (#39)
- Phi-4: 17.0 (#287)

| Benchmark | DeepSeek V4.1 Flash | Phi-4 |
|---|---|---|
| LMArena Hard Prompts | 1485 | 1220 |
| Epoch Capabilities Index | 155.01 | 130.43 |
| NYT Connections (extended) | 89.6% | — |
| CritPt | 14.3% | — |
| Chess Puzzles | — | 1% |
| LiveBench Reasoning | — | 47.8% |
| DTBench | 89.9% | — |
| LiveBench Data Analysis | — | 45.2% |
| LMCA | 47% | — |
| Surface Evolver Bench | 46.3% | — |
| LiveBench | — | 41.6% |

## Math

- DeepSeek V4.1 Flash: 48.4 (#52)
- Phi-4: 19.6 (#279)

| Benchmark | DeepSeek V4.1 Flash | Phi-4 |
|---|---|---|
| LMArena Math | 1493 | 1246 |
| OTIS Mock AIME 2024-2025 | — | 13.8% |
| ProofBench | 54% | — |
| LiveBench Math | — | 42% |
| MATH Level 5 | — | 64.9% |

## Knowledge

- DeepSeek V4.1 Flash: 41.6 (#97)
- Phi-4: 32.5 (#204)

| Benchmark | DeepSeek V4.1 Flash | Phi-4 |
|---|---|---|
| LMArena Expert | 1505 | 1203 |
| GPQA Diamond | — | 56.1% |
| Confabulations | — | 29.4% |
| Vectara Hallucination Rate | — | 3.7% |
| MMLU | — | 84.8% |

## Multilingual

- DeepSeek V4.1 Flash: 55.5 (#29)
- Phi-4: 37.4 (#232)

| Benchmark | DeepSeek V4.1 Flash | Phi-4 |
|---|---|---|
| LMArena Non-English | 1452 | 1197 |
| LMArena Chinese | 1506 | 1211 |
| LMArena French | 1448 | 1223 |
| LMArena Russian | 1473 | 1209 |
| LMArena Spanish | 1499 | 1234 |
| LMArena German | — | 1222 |
| LMArena Japanese | — | 1158 |
| LMArena Korean | — | 1151 |

## Instruction Following

- DeepSeek V4.1 Flash: 77.6 (#24)
- Phi-4: 60.6 (#246)

| Benchmark | DeepSeek V4.1 Flash | Phi-4 |
|---|---|---|
| LMArena Instruction Following | 1475 | 1201 |
| LiveBench Instruction Following | — | 58.4% |

## Long Context

- DeepSeek V4.1 Flash: 45.2 (#46)
- Phi-4: 36.9 (#221)

| Benchmark | DeepSeek V4.1 Flash | Phi-4 |
|---|---|---|
| LMArena Longer Query | 1476 | 1217 |

## Writing & Preference

- DeepSeek V4.1 Flash: 65.8 (#43)
- Phi-4: 40.7 (#239)

| Benchmark | DeepSeek V4.1 Flash | Phi-4 |
|---|---|---|
| LMArena Text | 1465 | 1217 |
| LMArena Creative Writing | 1436 | 1182 |
| LMArena Multi-Turn | 1460 | 1206 |
| Short-Story Creative Writing | — | 62.6% |
| EQ-Bench Creative Writing | 1540 | — |
| LiveBench Language | — | 25.6% |

## FAQ

### Is DeepSeek V4.1 Flash better than Phi-4?

DeepSeek V4.1 Flash is the stronger model overall, scoring 50.3 to 30.9 on the Noometry Index. Phi-4 costs 3.0× less per token, which makes it the better buy when DeepSeek V4.1 Flash's lead doesn't matter for your workload.

### Which is cheaper, DeepSeek V4.1 Flash or Phi-4?

Phi-4 is cheaper. It lists at $0.07 per million input tokens and $0.14 per million output tokens; DeepSeek V4.1 Flash lists at $0.15 and $0.60.

### Is DeepSeek V4.1 Flash or Phi-4 better for coding?

DeepSeek V4.1 Flash scores higher on coding benchmarks: 52.8 versus 33.8 in the Noometry coding category.

### Which has the bigger context window?

DeepSeek V4.1 Flash does, with 1M tokens against 128K.

### How many benchmarks do DeepSeek V4.1 Flash and Phi-4 share?

15 benchmarks have published results for both models. DeepSeek V4.1 Flash has 25 scored results on Noometry and Phi-4 has 37.