Models/Step 3.7 Flash

MDL

Step 3.7 Flash

StepFun

Verified against Artificial Analysis · Jul 13, 2026

Capability

percentile index

Price /M

$0.2 / $1.15

in / out

Context

256K

tokens

Avg score

58.0

7 benchmarks

AA Intelligence

30.3

index

Speed

404 tok/s

TTFT 0.7s

Released

May 29, 2026

About

Step 3.7 Flash is a proprietary model in the Step family from StepFun. Benchmarked on 7 evals, averaging 58.0.

Benchmark scores · 7

avg 58.0 — higher is better

τ²-benchartificial-analysis · 2026-07

98.5

GPQA Diamondartificial-analysis · 2026-07

80.9

IFBenchartificial-analysis · 2026-07

67.3

AA Long-Context Reasoningartificial-analysis · 2026-07

63.7

SciCodeartificial-analysis · 2026-07

Terminal-Bench Hardartificial-analysis · 2026-07

35.6

Humanity's Last Examartificial-analysis · 2026-07

19.9

Details

PublisherStepFun

FamilyStep

Parameters—

License—

WeightsClosed

ReleasedMay 29, 2026

Performance & price

Output speed404 tok/s

Latency (TTFT)0.7s

First answer5.6s

Price in / out$0.2 / $1.15 per 1M

Blended price$0.438 / 1M

Coding index39.6

Median across API providers, via Artificial Analysis. Blended = 3:1 input:output. For reasoning models, latency includes thinking time. Methodology →

History

full ledger →

Capability over time

Append-only ledger — every observed change to this model's numbers.

API providers

Artificial Analysis$1.15/M