Ghostwriter-AI - 2026 Pricing, Features, Reviews & Alternatives

Ghostwriter-AI is a suite of AI-powered add-ins for Microsoft Word, Outlook, Excel, and PowerPoint, available across Windows, Mac, Web, and iPad. Installed directly from the Microsoft Office Add-in Store, it integrates large language model capabilities into the Office ribbon, allowing users to generate, rewrite, and summarize text; draft and reply to emails in one click; and produce bulleted slide content without leaving familiar Office applications. AI responses are inserted at the cursor position or appended to the document, and a Quick Actions dropdown enables AI operations to be applied to selected text as document comments. The suite supports user-supplied API keys from OpenAI (including GPT-4 and Reasoning models), Google Gemini, xAI Grok, Anthropic Claude, Meta Llama, and Microsoft Azure AI, giving users direct control over model selection and data privacy. A shared embedded key is also available for users who prefer not to supply their own.

Ghostwriter-AI is available in general-purpose editions (Word Basic, Word PRO, Ultimate) and profession-specific editions covering Legal, Author, Consultant, Education, Government, Marketing, and Scientific workflows. Each profession-specific edition provides tailored AI instruction sets, terminology presets, and workflow configurations suited to that role. The Ultimate edition adds an interactive conversational chat interface within Office apps and access to Reasoning models. Persona selection allows users to assign a role to the AI when composing responses, while writing style and tone controls shape output to match specific communication requirements. Pricing follows a one-time purchase model with no subscription required. The platform serves over 500,000 users worldwide across legal, education, government, publishing, consulting, marketing, and scientific research sectors.