Kuaishou vs StepFun

Kuaishou — Foundation Models · Public · $18.6B mkt cap · 4 of 4 figures sourced  |  StepFun — Foundation Models · Private · $10B valuation · 2 of 2 figures sourced

Relationship

Kling AI Developer API and StepFun Open Platform do comparable work on image generation; both also serve buyers who need to build on a hosted model API and create images and video; similar scale (private).

Assembled from the recorded fields for this pair, not hand-checked. The comparison below is read from each company’s own profile.

5 of 11 capabilitiesShared product type

5 of 11 capabilities — Shares agentic coding, code generation, image generation and 2 more.

Ludbee capability tags · from the product records

Shared product type — Both ship application, developer tool and model API.

Ludbee product records

Aligned comparison

FieldKuaishouStepFun
Size$18.6B mkt cap$10B valuation different basis
Employees24,202—
Founded20112023 12 yrs later
StatusPublicPrivate
CategoryFoundation ModelsFoundation Models match
Stack layerApplication, Developer tool, Model API, PlatformAI agent, API service, Application, Developer tool, Model API
HeadquartersBeijing, ChinaShanghai, China

Capability overlap

Shared · 5

Agentic codingCode generationImage generationModel inferenceSpeech to text

Not verified for StepFun · 6

Avatar videoImage editingModel hostingModel trainingVideo editingVideo generation

Recorded for Kuaishou. StepFun’s product records say nothing either way — a missing record is not a missing capability.

Not verified for Kuaishou · 7

Agent orchestrationKnowledge retrievalText generationText to speechVoice agentSearch answersWorkflow automation

Recorded for StepFun. Kuaishou’s product records say nothing either way — a missing record is not a missing capability.

Products, side by side

Algorithmic pairing — assembled from recorded fields, not hand-checked

Kuaishou

Application

CyberCutApplication

StreamLake's AI video studio that cuts long videos into short-form clips, generates videos from scripts with AI voiceover and digital avatars, and supports text-based and conversational editing.

Kling AIApplication

Kuaishou's web and mobile AI creative studio that turns text, images and references into generated video, images, sound and edits.

Developer tool

CodeFlickerDeveloper tool

Kuaishou/StreamLake's AI code editor, providing autonomous coding agents, context-aware completion, Figma-to-code conversion and IDE extensions.

Model API

Kling AI Developer APIModel API

Kling's open-platform REST API that lets developers call its video and image generation models programmatically from Singapore or Beijing endpoints.

StepFun

Application

阶跃AI (StepFun AI)Application

StepFun's consumer AI assistant, available on the web and as Windows and macOS desktop clients, offering web search, knowledge-base Q&A, image creation, tool use and speech recognition.

Developer tool

阶跃星辰 AI Studio (StepFun AI Studio)Developer tool

A browser-based workspace for building, testing and deploying AI applications on StepFun's models, with a playground, a showcase library of example apps and a personal asset library.

Model API

StepFun Open PlatformModel API

API access to StepFun's text, vision, speech and image models, with credit packages and enterprise plans.

No counterpart

Kuaishou sells these in a stack layer with no product recorded for StepFun yet — nothing on the other side to compare them against.

Platform

VanchinPlatform

StreamLake's enterprise model-serving and AI computing platform, offering hosted inference and model customisation over a curated hub of open and in-house models.

StepFun sells these in a stack layer with no product recorded for Kuaishou yet — nothing on the other side to compare them against.

API service

Step PlanAPI service

A subscription service from the StepFun Open Platform that supplies a monthly Credit pool for calling StepFun's flagship models from third-party coding tools and agent clients such as Claude Code, Cursor, OpenClaw, Cline and Zed.

AI agent

StepClawAI agent

A one-click cloud-deployed AI agent offered inside the 阶跃AI assistant that interprets instructions and carries out tasks autonomously.