StepFun
Company ● Covered in 5 stories + Follow ✴ AI Graph LinkedIn
StepFun is the name used for Shanghai Jieyue Xingchen Intelligent Technology Co., Ltd, an artificial intelligence (AI) company based in Shanghai, China. The provided source describes StepFun as being recognized by investors, who have dubbed it one of China’s six “AI Tiger” companies. No additional products, services, or operational details are included in the supplied extract.
Updated 23 September 2026
Public sources: Wikipedia
Signals
3 stories (+200%)
Media momentum
As of 19 Oct 2026 · Visible stories in the last 30 days, compared with the 30 days before.
4 sources
Source diversity
As of 19 Oct 2026 · Distinct publications behind this entity's visible coverage.
1 event
Release activity
As of 19 Oct 2026 · Model, product and open-source release events in the last 90 days whose coverage involves this entity.
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Funding signals
As of 19 Oct 2026 · Funding and acquisition events in the last 90 days whose coverage involves this entity.
Feb 2026 → Oct 2026
Coverage span
As of 19 Oct 2026 · First to most recent month of TLDRocket coverage of this entity.
Management
updated 5 Aug 2026- Yibo Zhu VP of Engineering
Latest developments
StepFun Releases Step 5 Preview Open Weights: 600B MoE, 27B Active, 1M Context
MarkTechPost · 2 days ago ·
49
Step 5 Preview
Product Hunt · 3 days ago ·
35
StepFun Launches Step 5 Preview: A 600B-Total, 27B-Active MoE Model With 1M Context for Long-Horizon Agentic Work
MarkTechPost · 4 weeks ago ·
13
U.S. Agencies Accuse Six Chinese AI Firms of Siphoning Claude, GPT, Gemini and Grok
Trending Topics · 1 month ago ·
50
A Dream of Spring for Open-Weight LLMs: 10 Architectures from Jan-Feb 2026
Ahead of AI · 7 months ago ·
46
October 2026
StepFun released an open-weight Step 5 Preview Mixture-of-Experts (MoE) model for coding and long-running agent workloads Open source release
September 2026
US NSA, CISA, and FBI issued an advisory accusing six Chinese AI firms of bulk distillation of capabilities from US frontier models Security issue
- StepFun Launches Step 5 Preview: A 600B-Total, 27B-Active MoE Model With 1M Context for Long-Horizon Agentic Work
- U.S. Agencies Accuse Six Chinese AI Firms of Siphoning Claude, GPT, Gemini and Grok
February 2026
Relationships
Products & technology
- Develops Step 5 Preview · 2 sources
- Deploys Step 5 Preview · 2 sources
- Develops Step 3.5 Flash · 1 source
- Integrated with Hugging Face · 1 source
- Integrated with ModelScope · 1 source
- Integrated with vLLM · 1 source
- Integrated with SGLang · 1 source
- Integrated with Transformers · 1 source