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Sentient OS

Open-source (AGPL-3.0), on-device personal AI for Apple-silicon Macs (YC F26).

Visit sentient-os.ai ↗

What Sentient OS does

Open-source (AGPL-3.0), on-device personal AI for Apple-silicon Macs (YC F26). Overnight it reads the local files, messages, mail, calendar and transcripts you select with a local LLM (built-in Gemma 4 E4B, or LM Studio/Ollama), builds editable Markdown knowledge, then offers to finish work through computer use.

Good for

  • Private, offline assistant that knows your projects without sending data to the cloud
  • Hands-on demo for a privacy-first local-AI workshop

Try this in 10 minutes

  1. Private, offline assistant that knows your projects without sending data to the cloud. Use the free plan: pick one real example from your own business and try just that.
  2. Hands-on demo for a privacy-first local-AI workshop. Put the result next to how you do it today. Is it faster, cheaper or better?
  3. Sign up (free plan or trial if available) and try it on one real task from this week.

Mini-tasks based on common small-business uses for this tool.

Honest take

Some claims not independently checked

We have not written a detailed take on this tool yet. The summary above is based on the maker’s own website.

What we couldn’t verify

  • Fact vs hype: 'knows your entire life' is marketing; Mac (Apple silicon, 8 GB+) only; give it access carefully.

Compare

Personal AI agents compared: UK and EU availability, open source or hosted, bring your own model, approvals and price.

Pricing

Free and open source (AGPL-3.0); runs locally, no paid plan published (checked 28 Oct 2026).

Prices as listed by the maker when we last checked (2026-10-28); usually in US dollars. Check the website for current prices.

Latest update

  • 2026-10-27: Launched (YC F26) on X and GitHub.

Is Sentient OS worth it? Quick answers

Is Sentient OS worth it?

Sentient OS is worth a look if it matches a job you already do (AI assistant). There is a free tier, so you can test it before paying. Some of the maker's claims have not been independently checked.

How much does Sentient OS cost?

Free and open source (AGPL-3.0); runs locally, no paid plan published (checked 28 Oct 2026).

What is Sentient OS used for?

Open-source (AGPL-3.0), on-device personal AI for Apple-silicon Macs (YC F26). Typical uses: private, offline assistant that knows your projects without sending data to the cloud; hands-on demo for a privacy-first local-AI workshop.