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 9.3 out of 1000 as of July 2026, ranking #108,721 among 531,432 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 9 accounts a total of 35 times.
Who follows Yi-01.AI on X?
The accounts that follow Yi-01.AI include 40 founders, 7 angel investors and 13 influencers. Among its notable followers are Marc Andreessen, 6529, Andrew, Sarah Guo, Yohei and Teknium.