Yi-01.AI is a generative and agentic AI company that develops large language models and enterprise AI systems, founded by Kai-Fu Lee. Yi-01.AI's Twitter Score is 11 out of 1000 as of September 2026, ranking #87,957 among 486,860 tracked accounts.
Yi-01.AI was founded by Kai-Fu Lee, who serves as its CEO, and reached a valuation of $1 billion in November 2023, less than a year after its founding in May 2023. The company is backed by Sinovation Ventures and Alibaba Cloud. In January 2025, Yi-01.AI publicly denied reports that it was disbanding or selling teams to Alibaba.
Yi-01.AI released the open-source bilingual Yi-34B large language model in 2023, a model built on the same architecture and format as Llama, making it compatible with the broader Llama ecosystem of tools and integrations. The company's focus spans both foundational model development and applied enterprise AI systems. Yi-01.AI has published 244 posts on the platform and has been mentioned by 10 accounts a total of 36 times.
Who follows Yi-01.AI on X?
The accounts that follow Yi-01.AI include 46 founders, 10 angel investors and 12 influencers. Among its notable followers are Marc Andreessen, 6529, Andy, Sarah Guo, Yohei and Teknium.