AI Models

Stepfun

Multimodal foundation models from China

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Pricing · PaidRising
The FalcoScan Intel PanelStepfun · AI Models
Data updated 1 November 2026
Opportunity
High
Band
Saturation
Open
Band
Wrapper risk
Low
Band
Momentum
Rising
Market trend

AI Models AI has a narrow moat on average, from the moat scores of its rated products. What protects AI Models AI tools, and the widest moats

The Brief

What Stepfun does

StepFun is an AI company whose Open Platform offers its language, voice and image models through one API key, compatible with the OpenAI SDK. It is for developers building AI applications, independent developers and startups, and enterprises that need integration support and higher rate limits. Named models include Step 5 Preview, Step 3.7 Flash and Step 3.5 Flash, and the StepAudio 3 family for realtime voice interaction, speech synthesis, speech generation, music generation and speech recognition. AI Studio lets users test models in the browser without code. Pricing is usage based after registration, with a monthly Step Plan subscription for flagship models and credits through the Builder Program.

How Stepfun compares with its closest alternatives

4 of the 5 closest alternatives have a free plan; Stepfun does not. All 5 offer an API, as Stepfun does. Stepfun offers a web app. Of the alternatives, all 5 offer a web app. Stepfun was founded in 2023; the alternatives were founded between 2021 and 2023, 2 of them earlier. Stepfun is based in Shanghai, China; 3 of its 5 alternatives are in China too, and the others in South Korea and India.

Market position · AI Models

How Stepfun compares in AI Models

Stepfun has high opportunity and sits in the middle third of 455 live AI Models tools on FalcoScan. Across AI Models, the average opportunity score is 74.6 and the average saturation score 30.5. FalcoScan rates Stepfun's own market position as open. 200 of the 455 operating AI Models tools have hot momentum, and FalcoScan has recorded 13 shutdowns in the category.

Stepfun compared with its closest alternatives
ProductOpportunitySaturationPricingPricing fromFree planAPIPlatformsMomentum
StepfunFounded 2023 · Shanghai, ChinaHighOpenPaid—NoYesWeb, APIRising
Naver HyperCLOVAFounded 2021 · Seongnam, South KoreaHighOpenPaid—NoYesWeb, API, MobileRising
Baidu ERNIEFounded 2023 · Beijing, ChinaModerateContestedFreemium—YesYesWeb, API, MobileStable
DoubaoFounded 2023 · Beijing, ChinaHighContestedFreemium—YesYesWeb, API, MobileHot
KrutrimFounded 2023 · Bengaluru, IndiaHighOpenFreemium—YesYesWeb, API, MobileRising
MiniMaxFounded 2021 · Shanghai, ChinaHighOpenFreemium—YesYesWeb, API, MobileHot

Exact opportunity and saturation scores for all 6 of these, and where each ranks in AI Models.

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What it ships with

Capabilities & who uses it

The capabilities Stepfun exposes to builders and the verticals it currently serves.

AI Capabilities
Text GenerationVisionSpeech SynthesisReasoning
Industry Verticals
SaasEnterprise
Tagged

Stepfun shows up when builders search for these

china-llmmultimodalfoundation-modelsfrontier
Similar tools · AI Models

Alternatives to Stepfun

Products still running that do the same job, from the ai models market and related ones, closest match first.

See the AI Models market
AI Models
Naver HyperCLOVA

Korean sovereign LLM from Naver

Opportunity High
Paid
AI Models
Baidu ERNIE

Baidu's frontier LLM family

Opportunity Moderate
Freemium
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Doubao

ByteDance's consumer and enterprise AI assistant

Opportunity High
Freemium
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Krutrim

India's first AI unicorn LLM lab

Opportunity High
Freemium
AI Models
MiniMax

Multimodal foundation models for global creators

Opportunity High
Freemium
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Sarvam AI

Indian sovereign LLM

Opportunity High
Paid
Featured in
Questions

Stepfun: common questions

Is the StepFun API compatible with the OpenAI SDK?

Yes. The StepFun Open Platform says its API works with the OpenAI SDK, using one key for its language, voice and image models.

Source: platform.stepfun.com ↗

Is Stepfun free?

No. Stepfun is a paid product.

What are the best alternatives to Stepfun?

The closest alternatives to Stepfun that are still running, matched on the AI capabilities, uses and audience they share, are Naver HyperCLOVA, Baidu ERNIE, Doubao, Krutrim, and MiniMax.

Is Stepfun still running?

Yes. As of 1 November 2026, FalcoScan lists Stepfun as operating at stepfun.com.

Where is Stepfun based?

Stepfun is headquartered in Shanghai, China.

Does Stepfun have an API?

Yes. Stepfun offers an API.

Who is Stepfun for?

Stepfun is built for developers and enterprises.

How do I sign in to Stepfun?

Sign in on Stepfun's own website, stepfun.com. FalcoScan reviews Stepfun but does not run its accounts, so logins, passwords and billing are handled by Stepfun directly.

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