Elephas

Elephas is an AI knowledge assistant for Mac that indexes personal files and redacts sensitive data locally.

Elephas is an AI knowledge assistant designed for Mac users to work securely with confidential documents, notes, and client files. It indexes your PDFs, Word documents, Excel files, Apple Notes, Notion pages, Obsidian vaults, and Zoom transcripts locally on your device. Before any content reaches a cloud AI model, it automatically detects and redacts 28 types of sensitive data such as names, emails, and account numbers. Users can also operate entirely offline using local models or bring their own API keys from providers like OpenAI, Claude, and Gemini. The application features a systemwide writing assistant accessible via a keyboard shortcut in any app, and a Super Brain capability for chatting with customized workspaces. It is built for knowledge workers, researchers, marketers, and professionals handling sensitive legal or financial workflows.

Elephas at a glance

Best for: Writer, Researcher, Founder
Runs on: macOS, iOS, Chrome extension
Pricing: Standard $19/month; Professional $39/month; Pro+ $49/month
Released: June 2022
Category: AI productivity tool
Website: elephas.app

Key features

Index documents and notes locally
Redact 28 types of sensitive data automatically
Chat with custom Super Brain workspaces
Use offline with local models
Access AI writing assistant in any app
Integrate with Apple Notes, Notion, and Obsidian

Use it for

Reviewing confidential client contracts under NDA
Drafting proposals and managing research libraries
Preparing tax memos and handling audit files
Searching personal notes and journals securely

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