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Lark

飞书

Lark is ByteDance's enterprise collaboration and management platform, positioned as the infrastructure layer for the company's AI agent strategy . Under Zhang Yiming's directive, Lark—alongside Trae and Coze—was reorganized to serve as foundational infrastructure for Doubao (ByteDance's AI assistant), reflecting ByteDance's decision to stop internal competition and unify its efforts .

The platform has evolved from a traditional office suite into what Crossing described as a "smart collaboration hub" when paired with Doubao Work, which launched in September 2026 . This integration embeds AI directly into Lark's existing workflow—documents, meetings, calendars, and chat—allowing users to summon Doubao Work inside Lark to perform tasks like deep research, generate presentations, and extract insights from group conversations .

Lark's AI features, first rolled out in May 2025, combine private files, public web information, and internal Lark knowledge using DeepSeek-R1 and Doubao models . A notable later development is Lark CLI, a command-line interface that reached 10,000 GitHub stars by May 2026, designed as a minimal common language for humans, models, and systems to interact without translation costs . As one analysis put it, this gives agents "a place to actually work, visibly and persistently" .

The platform also maintains interoperability with competitors—Crossing reported it can connect with DingTalk and WeCom, positioning itself as a "central hub" regardless of which platform a team uses .

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