Fluent

Fluent is a native macOS AI assistant designed to operate directly within any Mac application, providing context-aware writing, editing, and document analysis capabilities. Unlike cloud-based assistants that require switching between browser tabs or manual copy-pasting, Fluent integrates seamlessly into the system-level workflow, allowing users to invoke its features via a keyboard shortcut or a menu bar icon. Once triggered, the assistant accesses the current application’s on-device context—such as the text selection, the file being edited, or the webpage content—without sending private data to external servers for feature extraction. This privacy-respecting architecture ensures that sensitive information remains on the machine while still enabling sophisticated AI interactions. The core functionality revolves around four primary modes: text refinement, document chat, web search augmentation, and model switching. In text refinement mode, users can highlight any text within apps like Notes, Mail, Pages, or even custom code editors, then ask Fluent to rephrase the selection for tone, clarity, or length. The assistant preserves the original formatting—including bold, italics, bullet points, and hyperlinks—after modification, which is critical for maintaining document structure. Document chat allows users to open a PDF, Word file, Markdown file, or even a code repository and have a conversational interaction with its contents. For example, a researcher can upload a long research paper and ask Fluent to summarize key findings, extract citations, or explain specific paragraphs without manually scrolling. The assistant builds a vector index of the document locally and supports follow-up questions, enabling users to compare different sections or ask for cross-references. Web s