# Qwen2.5 72B Instruct vs Step 3.7 Flash

> Step 3.7 Flash is the stronger model overall, scoring 36.5 to 31.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/qwen2-5-72b-instruct-vs-step-3-7-flash
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in math, where Step 3.7 Flash leads 40.9 to 18.1.
- Step 3.7 Flash is cheaper at $0.18 / $1.11 per million input/output tokens, against $1.40 / $5.60 for Qwen2.5 72B Instruct.
- Step 3.7 Flash accepts more context: 256K tokens versus 131K.

## Snapshot

| | Qwen2.5 72B Instruct | Step 3.7 Flash |
|---|---|---|
| Provider | Alibaba (Qwen) | StepFun |
| Noometry Index | 31.5 | 36.5 |
| Rank | 259 | 207 |
| Context | 131K | 256K |
| Input $/M | $1.40 | $0.18 |
| Output $/M | $5.60 | $1.11 |
| Weights | Open | Open |

## Coding

- Qwen2.5 72B Instruct: 32.8 (#256)
- Step 3.7 Flash: 39.4 (#147)

| Benchmark | Qwen2.5 72B Instruct | Step 3.7 Flash |
|---|---|---|
| SciCode | — | 40% |
| WeirdML | 16% | — |
| BigCodeBench Instruct | 45.8% | — |
| LMArena Coding | 1293 | — |
| BigCodeBench Complete | 55.9% | — |
| ALE-Bench | — | 694.12 |

## Agentic & Tool Use

- Qwen2.5 72B Instruct: 22.0 (#124)
- Step 3.7 Flash: —

| Benchmark | Qwen2.5 72B Instruct | Step 3.7 Flash |
|---|---|---|
| TheAgentCompany | 5.7% | — |
| BALROG | 16.2% | — |
| METR Time Horizons | 35.8% | — |

## Reasoning

- Qwen2.5 72B Instruct: 21.4 (#197)
- Step 3.7 Flash: 20.9 (#211)

| Benchmark | Qwen2.5 72B Instruct | Step 3.7 Flash |
|---|---|---|
| NYT Connections (extended) | — | 39.7% |
| CritPt | — | 2.3% |
| LMArena Hard Prompts | 1271 | — |
| DTBench | 62.9% | — |
| LMCA | 13.4% | — |
| BIG-Bench Hard | 79.8% | — |
| Epoch Capabilities Index | 129.01 | — |
| ForecastBench | 57.5 | — |
| HellaSwag | 84.8% | — |
| PIQA | 82.6% | — |
| WinoGrande | 82.3% | — |

## Math

- Qwen2.5 72B Instruct: 18.1 (#281)
- Step 3.7 Flash: 40.9 (#74)

| Benchmark | Qwen2.5 72B Instruct | Step 3.7 Flash |
|---|---|---|
| MathArena Final-Answer Competitions | — | 68.5% |
| OTIS Mock AIME 2024-2025 | 8.1% | — |
| Omni-MATH | 33% | — |
| LMArena Math | 1283 | — |
| MATH Level 5 | 63.2% | — |

## Knowledge

- Qwen2.5 72B Instruct: 26.9 (#247)
- Step 3.7 Flash: —

| Benchmark | Qwen2.5 72B Instruct | Step 3.7 Flash |
|---|---|---|
| GPQA Diamond | 49.1% | — |
| MMLU-Pro | 63.1% | — |
| Confabulations | 19.1% | — |
| GPQA (HELM) | 42.6% | — |
| LMArena Expert | 1245 | — |
| ARC (AI2) Challenge | 94.5% | — |
| MMLU | 85.3% | — |
| TriviaQA | 71.9% | — |

## Multilingual

- Qwen2.5 72B Instruct: 41.2 (#208)
- Step 3.7 Flash: —

| Benchmark | Qwen2.5 72B Instruct | Step 3.7 Flash |
|---|---|---|
| LMArena Non-English | 1252 | — |
| LMArena Chinese | 1272 | — |
| LMArena French | 1279 | — |
| LMArena German | 1234 | — |
| LMArena Japanese | 1180 | — |
| LMArena Korean | 1188 | — |
| LMArena Russian | 1264 | — |
| LMArena Spanish | 1255 | — |

## Instruction Following

- Qwen2.5 72B Instruct: 65.7 (#216)
- Step 3.7 Flash: —

| Benchmark | Qwen2.5 72B Instruct | Step 3.7 Flash |
|---|---|---|
| IFEval | 80.6% | — |
| LMArena Instruction Following | 1254 | — |

## Long Context

- Qwen2.5 72B Instruct: 38.9 (#183)
- Step 3.7 Flash: —

| Benchmark | Qwen2.5 72B Instruct | Step 3.7 Flash |
|---|---|---|
| LMArena Longer Query | 1282 | — |

## Writing & Preference

- Qwen2.5 72B Instruct: 46.9 (#210)
- Step 3.7 Flash: —

| Benchmark | Qwen2.5 72B Instruct | Step 3.7 Flash |
|---|---|---|
| LMArena Text | 1269 | — |
| LMArena Creative Writing | 1221 | — |
| WildBench | 80.2% | — |
| LMArena Multi-Turn | 1272 | — |

## FAQ

### Is Qwen2.5 72B Instruct better than Step 3.7 Flash?

Step 3.7 Flash is the stronger model overall, scoring 36.5 to 31.5 on the Noometry Index.

### Which is cheaper, Qwen2.5 72B Instruct or Step 3.7 Flash?

Step 3.7 Flash is cheaper. It lists at $0.18 per million input tokens and $1.11 per million output tokens; Qwen2.5 72B Instruct lists at $1.40 and $5.60.

### Is Qwen2.5 72B Instruct or Step 3.7 Flash better for coding?

Step 3.7 Flash scores higher on coding benchmarks: 39.4 versus 32.8 in the Noometry coding category.

### Which has the bigger context window?

Step 3.7 Flash does, with 256K tokens against 131K.

### How many benchmarks do Qwen2.5 72B Instruct and Step 3.7 Flash share?

0 benchmarks have published results for both models. Qwen2.5 72B Instruct has 43 scored results on Noometry and Step 3.7 Flash has 5.