🔥36氪•Stalecollected in 6m
Jieyue Xingchen Open-Sources Step 3.5 Flash
💡196B MoE Agent model open-sourced: 350TPS inference speed
⚡ 30-Second TL;DR
What Changed
Open-sourced Base/midtrain weights and Steptron framework
Why It Matters
Enables developers to build efficient AI Agents with high-speed MoE inference, lowering barriers for custom training and deployment.
What To Do Next
Clone the GitHub repo for Steptron and test fine-tuning Step 3.5 Flash on agent benchmarks.
Who should care:Developers & AI Engineers
🧠 Deep Insight
Web-grounded analysis with 8 cited sources.
🔑 Enhanced Key Takeaways
- •Jieyue Xingchen, founded in 2023 in Shanghai by ex-Microsoft VP Jiang Daxin and other alumni, has released over 30 large models, establishing it as a leader in China's multi-modality AI competition.[1][2][5]
- •The company secured a record 5 billion yuan Series B+ financing in early 2026 from investors including Tencent, Qiming, Wuyuan, and Huaqin Technology, marking the largest single-round funding in China's LLM track.[1][3]
- •StepFun formed alliances like the Model-Chip Ecosystem Innovation Alliance in July 2025 with Huawei, Biren, Moore Threads, and others, and integrated with DeepSeek alongside competitors like 01.AI and MiniMax.[6][7]
🔮 Future ImplicationsAI analysis grounded in cited sources
Jieyue Xingchen will expand Agent models into automotive and mobile devices
The company announced deepened technical cooperation with Geely Automobile, Qianli Technology, and OPPO for intelligent terminal Agents in core scenarios like smart cars and phones.[4]
Open-sourcing will boost developer adoption via the upgraded Star Plan
StepFun released an upgraded Star Plan providing models, computing power, capital, data, and incubation support to lower development thresholds and promote industry growth.[4]
⏳ Timeline
2023-07
Founded in Shanghai by ex-Microsoft VP Jiang Daxin and team.[2][3]
2025-03
Debuted publicly, quickly rising as a leading player with strong multimodal tech.[5]
2025-07
Announced Model-Chip Ecosystem Innovation Alliance at World AI Conference.[6]
2025-10
Launched 11 foundational models including language, multimodal, video, and speech in past 10 months.[5]
2026-01
Secured 5 billion yuan Series B+ financing, largest in China's LLM track.[3]
2026-03
Held first Ecological Open Day, announced partnerships for Agents in autos, mobiles, and finance.[4]
📎 Sources (8)
Factual claims are grounded in the sources below. Forward-looking analysis is AI-generated interpretation.
- eu.36kr.com — 3655608589082757
- scmp.com — Shanghai AI Start Founded Ex Microsoft Engineers Bets Scaling Law Boost AI Capabilities
- eu.36kr.com — 3656253226578441
- aibase.com — 15649
- technode.com — Meet Chinas Top Six AI Unicorns Who Are Leading the Wave of AI in China
- en.wikipedia.org — Stepfun
- pandaily.com — Zhipu AI Secures Strategic Financing From Hangzhou State Owned Investors
- trustiics.com — Deepseek Shareholders
📰
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Original source: 36氪 ↗