StepFun·Step

Step-2

StepFun’s second-generation general model, confirmed by the official release retrospective as a formal Step-line release on 2024-07-04.

LegacyLanguageReasoningCoding

MODEL NUMBER335

First public date: 2024-07-04
Organization: StepFun
Family: Step

Specifications

Only published specifications are shown.

Input modalities: Text
Output modalities: Text
Status: Legacy

Overview

StepFun’s second-generation general model, confirmed by the official release retrospective as a formal Step-line release on 2024-07-04.

Why it mattered

Step-2 moved StepFun’s scaled MoE foundation capability into a formal product milestone; specific parameter figures are not backfilled from secondary material here.

Specifications alongside predecessor

Compared with Step1V ↗

PreviousStep1V— · — ctx

CurrentStep-2— · — ctx

Architecture & capabilities

Release history

2024-07-04General release

The formal Step-2 release entered StepFun’s public model lineup.

View source

Related models

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PredecessorStep1VView details →SuccessorStep 3View details →

Sources

StepFun latest model lineupStepFun · Checked 2026-09-22

Official · Verified 02

Step-2 Literary Master EditionStepFun · Published 2025-01-20 · Checked 2026-09-22

Official · Verified

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Model ID: step-2
Page: https://llmlineage.com/en/models/step-2
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