# Mercury vs Step 3.7 Flash

> Mercury and Step 3.7 Flash score almost the same on the Noometry Index (37.6 vs 37.3), so choose on price, context window or the category you care about most.

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

## Summary

- The widest gap is in reasoning, where Step 3.7 Flash leads 21.6 to 17.5.
- Step 3.7 Flash has downloadable open weights; the other is API-only.

## Snapshot

| | Mercury | Step 3.7 Flash |
|---|---|---|
| Provider | Inception | StepFun |
| Noometry Index | 37.6 | 37.3 |
| Rank | 199 | 207 |
| Context | — | 256K |
| Input $/M | — | $0.18 |
| Output $/M | — | $1.11 |
| Weights | Proprietary | Open |

## Coding

- Mercury: 38.7 (#170)
- Step 3.7 Flash: 40.0 (#150)

| Benchmark | Mercury | Step 3.7 Flash |
|---|---|---|
| SciCode | — | 40% |
| LMArena Coding | 1322 | — |
| ALE-Bench | — | 694.12 |

## Reasoning

- Mercury: 17.5 (#293)
- Step 3.7 Flash: 21.6 (#219)

| Benchmark | Mercury | Step 3.7 Flash |
|---|---|---|
| Kagi LLM Benchmark | 21.6% | — |
| NYT Connections (extended) | — | 39.7% |
| CritPt | — | 2.3% |
| LMArena Hard Prompts | 1285 | — |

## Math

- Mercury: —
- Step 3.7 Flash: 42.9 (#82)

| Benchmark | Mercury | Step 3.7 Flash |
|---|---|---|
| MathArena Final-Answer Competitions | — | 68.5% |

## Multilingual

- Mercury: 41.6 (#206)
- Step 3.7 Flash: —

| Benchmark | Mercury | Step 3.7 Flash |
|---|---|---|
| LMArena Non-English | 1260 | — |

## Instruction Following

- Mercury: 65.2 (#224)
- Step 3.7 Flash: —

| Benchmark | Mercury | Step 3.7 Flash |
|---|---|---|
| LMArena Instruction Following | 1239 | — |

## Long Context

- Mercury: 38.4 (#198)
- Step 3.7 Flash: —

| Benchmark | Mercury | Step 3.7 Flash |
|---|---|---|
| LMArena Longer Query | 1266 | — |

## Writing & Preference

- Mercury: 46.2 (#221)
- Step 3.7 Flash: —

| Benchmark | Mercury | Step 3.7 Flash |
|---|---|---|
| LMArena Text | 1282 | — |
| LMArena Creative Writing | 1191 | — |
| LMArena Multi-Turn | 1282 | — |

## FAQ

### Is Mercury better than Step 3.7 Flash?

Mercury and Step 3.7 Flash score almost the same on the Noometry Index (37.6 vs 37.3), so choose on price, context window or the category you care about most.

### Is Mercury or Step 3.7 Flash better for coding?

Step 3.7 Flash scores higher on coding benchmarks: 40.0 versus 38.7 in the Noometry coding category.

### How many benchmarks do Mercury and Step 3.7 Flash share?

0 benchmarks have published results for both models. Mercury has 9 scored results on Noometry and Step 3.7 Flash has 5.