01.AI to Shut Down Public Developer Platform to Focus on Enterprise Solutions
Kai-Fu Lee's AI startup, 01.AI, has announced it will gradually shut down its public developer platform, including API access, online model experiences, and top-up services. The company is halting new user registrations immediately and plans to completely terminate API calls and model experiences by September 3, 2026. This strategic pivot marks a significant shift for 01.AI as it moves away from public developer services to focus exclusively on high-value enterprise-level AI solutions and AI agents. It forces developers currently relying on Yi models via 01.AI's public API to migrate their applications to alternative platforms. While new registrations and top-ups are disabled immediately, existing users can query bills and call details, with a refund window for account balances open until December 3, 2026. Developers can still access Yi models through alternative open-source repositories like Hugging Face or cloud providers like Microsoft Azure.
## BACKGROUND
Founded in May 2023 by prominent computer scientist and venture capitalist Kai-Fu Lee, 01.AI is a major Chinese AI startup known for its "Yi" series of large language models. AI agents, a key focus for the company's enterprise strategy, are autonomous systems powered by LLMs that can plan, use tools, and execute tasks to achieve specific goals.