Import and preview
Load Office and PDF files into a managed local workspace with version snapshots.
Controlled beta for Windows 10/11
AI-native Office document workspace
LangOffice helps you understand, rewrite, ask, generate and export Office documents with model-powered workflows for DOCX, XLSX, PPTX and PDF.
- File formats
- DOCX / XLSX / PPTX / PDF
- AI actions
- Understand / rewrite / ask
- Current build
- 0.1.0 beta
Supplier annual renewal terms
Suggested clause needs approval period and responsibility boundary
Workflow
A document workspace built around intelligent actions
Bring document understanding, rewriting, knowledge Q&A and export into one controlled workflow.
Ask and generate
Use instructions and knowledge sources to summarize, rewrite or inspect risk.
Apply intelligently
Accept, reject or refine AI suggestions before they become part of a file version.
Export with trace
Keep citations, diagnostics and export records for later review and recovery.
Capabilities
Intelligent document work, with practical boundaries
Knowledge-grounded AI
Ask across managed files and reuse cited context
Sync managed files into knowledge spaces and open answers back to paragraphs, cells, slides or PDF pages.
Source: renewal_policy.pdf · Page 4
Answer grounded by 3 citations. No answer is produced when evidence is insufficient.
Multi-format Office workflows
Work across DOCX, XLSX, PPTX and PDF with realistic beta limitations documented up front.
DOCX
XLSX
PPTX
PDF
Domestic model deployment
Use Alibaba Cloud Bailian through an OpenAI-compatible provider while keeping API keys on the server.
Reviewable changes
AI changes remain proposals until a user accepts them. This keeps generated text out of final files by default.
Local persistence
Versions, exports, logs and SQLite state are stored in a persistent workspace designed for recovery.
Security model
Server-side model access with controlled document output.
The current deployment keeps the Bailian API key in a server environment file. The desktop client should call server-side services instead of embedding secrets.
Server-side API key storage; no client-side key distribution.
Qwen thinking mode can be disabled for cost control on compatible Bailian models.
Knowledge answers return insufficient-evidence states instead of fabricating citations.
Controlled beta status is visible; users should review generated output before business use.
Download
Try the Windows controlled beta
The installer is available for internal evaluation. Review the known beta limitations before relying on it for production documents.