Lark

Lark, known as Feishu in China, is ByteDance's advanced productivity platform for the AI era, integrating instant messaging, cloud docs, video conferencing, project management, and more into one enterprise collaboration suite. Launched in 2017, it has become the core collaboration tool inside ByteDance and at many leading companies, currently supporting macOS, Windows, Linux, iOS, and Android.

Key Features

• Smart collaboration: Integrates instant messaging, audio/video meetings, screen sharing, and other communication methods, with video meetings supporting up to 1,000 participants
• Cloud document collaboration: Provides online docs, Base (multidimensional tables), mind notes, and other content creation tools with real-time multi-user co-editing
• Integrated AI capabilities: Built-in Feishu Knowledge Q&A, smart meeting minutes, Base AI features, and more, incorporating leading models such as Doubao and DeepSeek R1
• Enterprise management: Covers HR, performance reviews, recruiting, OKR, and other complete enterprise management scenarios
• Open ecosystem: Rich APIs and an app marketplace support custom enterprise development

Use Cases

In daily enterprise work, Lark helps teams move information efficiently and accumulate knowledge. According to published statistics, inside ByteDance it saves 29% of communication time each year, improves cross-department project efficiency by 24%, and cuts staffing costs by 30%. Xiaomi founder Lei Jun praised it as 'very simple and efficient for information creation, sharing, and collaborative work,' while Li Xiang of Li Auto called it 'an intelligent organizational management and collaboration system that unifies communication, work, and cognitive co-creation.'

Product Advantages

Lark's most striking trait is its usability-first experience design. The interface is clean and intuitive, so new users get productive quickly; system performance is stable with fast response times; and a contextual mini toolbar keeps tools hidden by default, appearing only when needed so the content always comes first. In addition, Lark deeply integrates AI across the entire workflow - from document creation to meeting notes, from knowledge Q&A to data analysis - delivering intelligent support end to end and living up to its positioning as 'advanced productivity for the AI era.'