Personal AI.
Privacy at its core.

Sentient uses on-device inference to understand your world, keeps your knowledge on your Mac, and lets you choose the AI that puts it to work.

Your Mac3:00 AM
Apple NotesMessagesApple MailApple CalendarScreenshotsFiles

Sentient’s
on-device model

Reads your selected sources on your Mac.

Privacy-filtered summaries

Your choice

Your frontier model

  • ChatGPT or Claude

    Your subscription

  • Your own strong local model

    Runs on your Mac

  • OpenRouter

    Your choice of model

ChatGPT and Claude plans also offer 100+ connectors through their directories.

Knowledge you own

What it knows about you.Yours to open. Yours to edit.

Your knowledge lives in readable Markdown files on your Mac. Open it, make a correction, or change your writing examples anytime.

KnowledgeExample
On your Mac
README.md

Personal knowledge

Their interests connect Apple hardware, local AI, cognitive science, philosophy, and product design. Past explorations included open-source tools and research into Apple-platform internals.

The technical curiosity is practical. A chip's advertised capability matters less than which accelerators software can actually use. A larger model is not automatically preferable if a smaller one responds sooner, fits the available memory, and produces useful results. These distinctions recur in .

How they evaluate software

They care about visual hierarchy, interaction speed, and whether an interface makes its behavior understandable. One obvious action, visible context, and strong typography matter more than a futuristic appearance on its own. Hidden system state is a particular source of frustration: polish includes being able to tell what a tool is doing.

That preference also appears in . Screenshot tools, search, dictation, window management, and keyboard shortcuts are connected by a desire for a computer that is inspectable and easy to control.

Communication and taste

They value articulate explanations, but dislike unnecessary repetition. The useful balance is a clear main point followed by enough reasoning to understand it. and describe different expressions of that same preference for clarity.

Linked notes

5 example files · Plain MarkdownPersonal details omitted
Knowledge On your Mac

Personal knowledge

Their interests connect Apple hardware, local AI, cognitive science, philosophy, and product design. Past explorations included open-source tools and research into Apple-platform internals.

The technical curiosity is practical. A chip's advertised capability matters less than which accelerators software can actually use. A larger model is not automatically preferable if a smaller one responds sooner, fits the available memory, and produces useful results. These distinctions recur in Apple Silicon and Local AI.

Example notes · Personal details omitted

Your choice of AI

You choose what
puts your knowledge to work.

Use your own ChatGPT or Claude account, OpenRouter, or a compatible larger local model. Apple Mail and Calendar work with your chosen setup, without requiring a ChatGPT or Claude subscription.

Your task context

Relevant knowledge, your request,
and screen or app context

A larger local model

LM Studio · Ollama

Knowledge organization and Sidekick can use a compatible model on your own hardware. Double Tap can run locally too, with a compatible model on your Mac through Ollama or LM Studio. Model capabilities and hardware requirements depend on your setup.

Zero data retention

Fast replies.
Privacy built in.

For low-latency replies, the Double Tap drafts we cover use the OpenAI API with Zero Data Retention. We cover the cost for our first users.

With this route, a screenshot, your knowledge including the one-time writing snapshot, and your instructions use GPT 6.1 Sol through the OpenAI API to produce an unsent draft. As a YC company, we’ve worked with OpenAI to enable Zero Data Retention for our users, so it’s ridiculously private.

Prefer your own setup? Choose a cloud provider or a compatible local model on your Mac through Ollama or LM Studio in Double Tap’s settings.

Open source

See how we built it.

The app and supporting infrastructure are open source. You can inspect how Sentient handles your knowledge.

Your controls, explained.

No. You do not need to create a separate Sentient account or login. You can connect your own AI provider or use a compatible local model.

Your Mac, a little more sentient.