AI toolsCompare AI products

Compare AI products

Put 2–4 AI products side by side: rating, China availability, pricing tier, open source, self-hosting, capability tags, pros and cons.

Pick products

Up to 4 at a time — comparing within one category works best

2 selected

KimiStepFun

Compare AI products	Kimi Visit Site	StepFun Visit Site
Rating	9.4	9.2
Category	Chat models	Chat models
Vendor	Moonshot AI	StepFun
Started	2023	2023
Region	China	China
China availability	Works in China	Works in China
Pricing tier	Free tier	Free tier
Current flagship	Kimi k1.5 / K3	Step-2 Trillion-parameter MoE / Yuewen
Open source	Yes	No
Self-hostable	Yes	No
Capability tags	Long contextAutonomous agentCodingStrong Chinese	ReasoningLong contextStrong Chinese
Latest release	Jul 2026 · Kimi K3	Jul 2024 · Step-2 Trillion MoE preview
Strengths	Long-context pioneer with seamless 2M-token document analysis k1.5 multimodal reasoning + Explorer mode provide premier deep-research capabilities	StepFun trillion-parameter Step-2 MoE; strong mathematical and long-context reasoning Yuewen provides structured long-form report generation and multimodal charts understanding
Caveats	Multi-file software engineering is less focused than dedicated coding agents	Global developer ecosystem and third-party integrations are still expanding

Timelines are compiled from public sources and may lag. Check official sites, pricing, and changelogs before you buy or integrate. Not investment advice.