On-Device AI

Meridian includes AI features that run entirely on your Mac. Nothing is sent to the cloud. Your data stays on your device.

How It Works

Meridian uses a local language model that runs on your Apple Silicon chip via Metal GPU acceleration. The model is downloaded automatically the first time you launch the app and runs in the background without slowing down the rest of the application.

What the AI Does

Action Item Extraction

Meridian reads your emails and identifies things you need to do. When someone asks you to send a file, review a document, or make a decision, Meridian extracts that as a task — with the relevant context attached.

You don’t need to read every email carefully to make sure you didn’t miss a commitment. Meridian catches it for you.

Activity Summarization

Get a quick 2-3 sentence overview of your current workload:

• What needs your attention
• What’s in progress
• What’s been completed recently

This is your daily briefing — a fast way to orient yourself without scrolling through lists.

Natural Language Task Creation

Describe what you need to do in plain language and Meridian will parse it into a structured task with the right title, due date, priority, and type. Instead of filling out a form, just type what you’re thinking.

Requirements

• Apple Silicon (M1, M2, M3, or newer) is required
• The model downloads automatically on first launch (~a few minutes depending on connection)
• Meridian detects your GPU core count and Neural Engine to optimize performance

Privacy

This is the most important part: the AI runs on your device and nowhere else. Your emails, tasks, and calendar data are never sent to a remote server for AI processing. There is no cloud AI. Your data is not used to train models. The model runs locally using your Mac’s hardware, and that’s it.