October 11, 2026 — The open-source office suite ONLYOFFICE just got its biggest AI upgrade yet.
Bottom line: ONLYOFFICE 10.0, announced October 10, 2026, bakes context-aware AI tools into every editor — documents, spreadsheets, presentations, and PDFs — while letting organizations choose their own models, including local ones. It also adds four modular apps and fixes 35 security vulnerabilities.
What happened: AI moves into the document, not a sidebar plugin
ONLYOFFICE 10.0 puts a dedicated AI tab with built-in chat directly inside each editor. From within the document, spreadsheet, presentation, or PDF, users can draft, summarize, translate, clean up, and reformat content without copying anything into a separate chatbot. The release ships around 50 new features and more than 1,000 fixes across the online, desktop, and mobile editors, according to the company’s announcement.
Teams also get ready-made prompts, custom AI actions, saved prompts, and AI assistants they can configure for recurring workflows — the pieces that make AI useful for boring, everyday office work rather than one-off demos.
The interesting detail: you pick the model
Unlike rivals that lock you into one provider’s AI, ONLYOFFICE lets organizations choose models based on quality, speed, and cost. Cloud users can enable the AI through OpenRouter, while self-hosted deployments can connect any model, including ones running locally on their own hardware — meaning sensitive data never has to leave the organization’s infrastructure.
On mobile, the free iOS and Android apps gain an AI assistant with new provider options including Grok and DeepSeek, plus AI AutoFill for forms and voice input for working on the go.
More in 10.0: modular apps and security hardening
The release introduces four free modular apps under the AGPL v3 license: AI Agents (intelligent search, a personalized knowledge base, and extended reasoning powered by MCP servers), Forms, Files, and Rooms for secure collaboration including Virtual Data Rooms. Editors also get practical upgrades — the PDF editor adds metadata removal and automatic table recognition, and co-authors can now follow each other’s cursors in real time.
On the security front, the company fixed 35 vulnerabilities, a meaningful cleanup for a suite pitching itself to organizations handling sensitive data.
Why it matters
For subscribers weighing the “everything AI, tested” angle: ONLYOFFICE is a genuine alternative to Microsoft 365 and Google Workspace with over 21 million users worldwide, and its approach here is notably honest — AI where you already work, with the model left to your discretion and the data kept on your side of the firewall. That’s a refreshingly practical posture next to suites that want to be your one and only AI provider. The real test will be whether the context-aware drafting and summarization hold up against Microsoft Copilot and Google’s Gemini for Workspace in day-to-day use.
Frequently asked questions
Is ONLYOFFICE 10.0 free?
Yes. ONLYOFFICE is an open-source project; the new modular apps are free under the AGPL v3 license, and the mobile apps remain free. On Desktop Community, the AI tools are available as an optional add-on.
Which AI models does ONLYOFFICE 10.0 support?
Cloud users connect through OpenRouter, and server deployments can connect any model, including locally hosted ones. Mobile users get an AI assistant with providers including Grok and DeepSeek.
What are the four new modular apps?
AI Agents (workspace search, knowledge base, and MCP-powered reasoning), Forms (data collection and response analysis), Files (centralized document storage), and Rooms (secure collaboration and Virtual Data Rooms).
How many security issues does 10.0 fix?
The company says the release fixes 35 vulnerabilities, aimed at organizations handling sensitive data.
Sources: PR Newswire via Morningstar, October 10, 2026.