StepFun

Smart and reliable personal assistant

Shanghai, China · Founded 2023 · $1.0B raised

Headquarters
Shanghai
Employees
201–500
Founded
2023
Business Model
B2B
Total Funding
$1.0B
Last Round
$717.0M Extension RoundJan 2026
Rounds
2

About

StepFun (Shanghai Jieyue Xingchen Intelligent Technology Co., Ltd) is a Chinese artificial intelligence company building large-scale multimodal foundation models for enterprise and consumer applications. Founded in 2023 and headquartered in Shanghai, StepFun has rapidly emerged as one of China's leading AI startups. The company's Step series of models handle text, image, video, and speech modalities, including Step-3o, Step-R1, and Step-Video.

Summary

StepFun is an Artificial Intelligence company based in Shanghai, China, founded in 2023. It has raised $1.0B in total across 2 rounds, most recently a $717.0M Extension Round round in Jan 2026. Investors include China Life Private Equity, Tencent and Qiming VP.

Tech & App Stack

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Funding History

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Extension RoundSeries B+Jan 2026
$717.0M

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Series B through Extension Round — per-round amounts, valuations, and who invested in each round.

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