# Phi-4 vs Step 3.7 Flash

> Step 3.7 Flash is the stronger model overall, scoring 37.3 to 31.2 on the Noometry Index. Phi-4 costs 4.8× less per token, which makes it the better buy when Step 3.7 Flash's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/phi-4-vs-step-3-7-flash
- Last updated: 2026-10-11
- Shared benchmarks: 0

## Summary

- The widest gap is in math, where Step 3.7 Flash leads 42.9 to 20.8.
- Phi-4 is cheaper at $0.07 / $0.14 per million input/output tokens, against $0.18 / $1.11 for Step 3.7 Flash.
- Step 3.7 Flash accepts more context: 256K tokens versus 128K.

## Snapshot

| | Phi-4 | Step 3.7 Flash |
|---|---|---|
| Provider | Microsoft | StepFun |
| Noometry Index | 31.2 | 37.3 |
| Rank | 279 | 207 |
| Context | 128K | 256K |
| Input $/M | $0.07 | $0.18 |
| Output $/M | $0.14 | $1.11 |
| Weights | Open | Open |

## Coding

- Phi-4: 34.4 (#239)
- Step 3.7 Flash: 40.0 (#150)

| Benchmark | Phi-4 | Step 3.7 Flash |
|---|---|---|
| SciCode | — | 40% |
| BigCodeBench Instruct | 45.5% | — |
| LiveBench Coding | 30.7% | — |
| LMArena Coding | 1231 | — |
| BigCodeBench Complete | 55.4% | — |
| ALE-Bench | — | 694.12 |

## Agentic & Tool Use

- Phi-4: 22.8 (#128)
- Step 3.7 Flash: —

| Benchmark | Phi-4 | Step 3.7 Flash |
|---|---|---|
| Berkeley Function Calling Leaderboard | 28.8% | — |
| BALROG | 11.6% | — |

## Reasoning

- Phi-4: 17.7 (#291)
- Step 3.7 Flash: 21.6 (#219)

| Benchmark | Phi-4 | Step 3.7 Flash |
|---|---|---|
| NYT Connections (extended) | — | 39.7% |
| CritPt | — | 2.3% |
| Chess Puzzles | 1% | — |
| LiveBench Reasoning | 47.8% | — |
| LMArena Hard Prompts | 1220 | — |
| LiveBench Data Analysis | 45.2% | — |
| Epoch Capabilities Index | 130.42 | — |
| LiveBench | 41.6% | — |

## Math

- Phi-4: 20.8 (#285)
- Step 3.7 Flash: 42.9 (#82)

| Benchmark | Phi-4 | Step 3.7 Flash |
|---|---|---|
| MathArena Final-Answer Competitions | — | 68.5% |
| OTIS Mock AIME 2024-2025 | 13.8% | — |
| LiveBench Math | 42% | — |
| LMArena Math | 1246 | — |
| MATH Level 5 | 64.9% | — |

## Knowledge

- Phi-4: 32.6 (#209)
- Step 3.7 Flash: —

| Benchmark | Phi-4 | Step 3.7 Flash |
|---|---|---|
| GPQA Diamond | 56.1% | — |
| Confabulations | 29.4% | — |
| Vectara Hallucination Rate | 3.7% | — |
| LMArena Expert | 1203 | — |
| MMLU | 84.8% | — |

## Multilingual

- Phi-4: 37.2 (#237)
- Step 3.7 Flash: —

| Benchmark | Phi-4 | Step 3.7 Flash |
|---|---|---|
| LMArena Non-English | 1197 | — |
| LMArena Chinese | 1212 | — |
| LMArena French | 1224 | — |
| LMArena German | 1222 | — |
| LMArena Japanese | 1158 | — |
| LMArena Korean | 1151 | — |
| LMArena Russian | 1209 | — |
| LMArena Spanish | 1234 | — |

## Instruction Following

- Phi-4: 60.4 (#251)
- Step 3.7 Flash: —

| Benchmark | Phi-4 | Step 3.7 Flash |
|---|---|---|
| LiveBench Instruction Following | 58.4% | — |
| LMArena Instruction Following | 1201 | — |

## Long Context

- Phi-4: 36.9 (#226)
- Step 3.7 Flash: —

| Benchmark | Phi-4 | Step 3.7 Flash |
|---|---|---|
| LMArena Longer Query | 1217 | — |

## Writing & Preference

- Phi-4: 40.5 (#244)
- Step 3.7 Flash: —

| Benchmark | Phi-4 | Step 3.7 Flash |
|---|---|---|
| LMArena Text | 1217 | — |
| LMArena Creative Writing | 1182 | — |
| Short-Story Creative Writing | 62.6% | — |
| LMArena Multi-Turn | 1206 | — |
| LiveBench Language | 25.6% | — |

## FAQ

### Is Phi-4 better than Step 3.7 Flash?

Step 3.7 Flash is the stronger model overall, scoring 37.3 to 31.2 on the Noometry Index. Phi-4 costs 4.8× less per token, which makes it the better buy when Step 3.7 Flash's lead doesn't matter for your workload.

### Which is cheaper, Phi-4 or Step 3.7 Flash?

Phi-4 is cheaper. It lists at $0.07 per million input tokens and $0.14 per million output tokens; Step 3.7 Flash lists at $0.18 and $1.11.

### Is Phi-4 or Step 3.7 Flash better for coding?

Step 3.7 Flash scores higher on coding benchmarks: 40.0 versus 34.4 in the Noometry coding category.

### Which has the bigger context window?

Step 3.7 Flash does, with 256K tokens against 128K.

### How many benchmarks do Phi-4 and Step 3.7 Flash share?

0 benchmarks have published results for both models. Phi-4 has 37 scored results on Noometry and Step 3.7 Flash has 5.