Yunnan Liandi Technology Co., Ltd.
Profiles and retained official sources for SiYuan, developed by Yunnan Liandi Technology Co., Ltd. The fixed package names Liang Ding and Liyuan Li as maintainers; current company headcount and control remain unknown. Both original supervised note-editing cases completed once with Qwen2.5-Coder-1.5B-Instruct Q4_K_M and failed their original conditions. Both source notes were unchanged; browser insertion and generated-file export were not tested. These results cover only the recorded cases and configuration.
The official SiYuan privacy notice identifies Yunnan Liandi Technology Co., Ltd. as the designer and developer, and the fixed 3.8.6 package names the same company as author. That package lists Liang Ding and Liyuan Li as maintainers; it does not establish that the company currently has two people or identify its controlling ownership. B3log links SiYuan among its open-source projects. This profile focuses on supervised note editing with a separately selected model. Both original synthetic-note cases completed once through the official 3.8.6 native editor endpoint on 2026-10-03 with Qwen2.5-Coder-1.5B-Instruct Q4_K_M, and both failed. The primary case passed five conditions and failed one; the boundary case passed three, failed two and left one unverified. The digest preserved its material facts but used the wrong headings. The checklist copied an untrusted sent-invitations assertion and misleading candidate values into its Needs confirmation section; no real sending action was evidenced. Both source notes remained unchanged. Agent Chat, MCP, cloud sync, web search, embedding, image generation, browser insertion and generated-file export remain outside this pilot. These results cover only the recorded cases and model configuration and do not establish overall product quality. Current company headcount, ownership and corporate-register details have not been independently established.
SiYuan is an open-source personal knowledge workspace developed by Yunnan Liandi Technology Co., Ltd. Its fixed 3.8.6 package names Liang Ding and Liyuan Li as maintainers. A student, creator or independent professional can keep notes in a local workspace, connect related blocks and use a separately configured model to summarize a passage, improve wording or draft content inside the editor. Native AI editing offers a review panel with copy and insertion controls; the selected provider and model generate the text. The source also contains a distinct Agent Chat, MCP and skill configuration, whose capabilities require separate evaluation. This profile focuses on supervised note editing and does not imply that an autonomous workflow ran. Current company headcount and controlling ownership remain unverified. On 2026-10-03, both original synthetic-note cases completed once through the official 3.8.6 native editor endpoint using Qwen2.5-Coder-1.5B-Instruct Q4_K_M, and both failed the original acceptance conditions. The digest retained its material facts but used the wrong heading structure. The boundary checklist retained confirmed facts but copied an untrusted sent-invitations assertion and misleading candidate values into its Needs confirmation section. Across twelve conditions, eight passed, three failed and one remained unverified. Both source notes were unchanged; browser insertion and generated-file export were not tested. These observations apply only to the recorded cases and model configuration.