LLM API·China
StepFun
Step series from StepFun — trillion-parameter-class Chinese MoE models
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Founded
2023
Headquarters
China
Price range
—
API format
openai
Reachability & verification
Live reachability
Target (StepFun): https://www.stepfun.com
Official Path Verified
ModelHub proactively confirms this provider's identity — it is the official lab/API, not a wrapper or reseller. Reachability is probed live from the gateway egress; overseas reference latencies are estimates.
About StepFun
StepFun (阶跃星辰) trains very-large-scale MoE models — Step-1 (lightweight), Step-2 (trillion-parameter-class MoE), Step-1V / Step-1.5V for vision. Research-lab pedigree with a practical API billing surface.
Pros
- OpenAI-compatible API: openai — drop-in for existing SDK users
- Established 3+ years (founded 2023)
Cons
- No overseas node — mainland China access only; GFW affects foreign users
- Payments only via alipay, wechat — may block non-China billing
Tracked models
3Map a verified path
We've prefilled StepFun's tracked models. Run the planner to see which need brokerage vs. an official overseas route.
Paste the model names your team wants — one per line or comma-separated. We'll map each to a verified path.
Rule-based matching, not ML.
Request a brokerage intro
Not on our verified catalog yet? We broker a vetted intro to StepFun and handle residency, contracting and integration.
Affiliate disclosureSome provider website links may earn us a referral fee. Our verification and brokerage are independent — we only earn when we actually deliver a vetted intro.