AI & Agents
Sentient OS
Last updated 2026-08-25 · benchmark measured 2026-10-20 — deterministic & reproducible
On-device AI for macOS that processes your personal data overnight and proactively acts on it.
Sentient OS at a glance
Sentient OS is a free, open-source macOS app that reads your files, WhatsApp, iMessage, and email overnight on your own Mac and prepares morning task summaries you can act on.
Good for
- macOS users who want an AI assistant that reviews personal messages and files overnight
- privacy-conscious people who want data processing to stay on their own device
- remote workers or productivity users who want morning task summaries prepared automatically
Pricing
Free and open source.
Questions people ask
Do I need a ChatGPT or Claude subscription to use Sentient OS?
You connect your own subscription (ChatGPT, Claude, or OpenRouter) for frontier-model tasks, or you can use a local model through LM Studio instead.
What data leaves my Mac?
According to Sentient OS, your files never leave your device and there are no Sentient servers involved; any frontier-model calls go out through your own subscription.
When does Sentient OS process my data?
It runs nightly at 3 AM, as long as the app is open in your menu bar and your Mac is plugged in.
Can I see what the knowledge base contains?
The knowledge base is built from plain markdown files and folders on your Mac, which are yours to edit.
What Macs does it work on?
It is optimized for Apple silicon and, per the material, runs on Macs with as little as 8 GB of memory.
Written by Legit.Show from sentient-os.ai on 2026-09-30. It does not change the score.
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To cite this score: legit.show/s/sentient-os-ai/2026-10-20. That address never changes; this page moves with every re-measure.
Legit.Show scored Sentient OS 78/100 on 2026-10-20, measured across 5 of 7 frames from its public surface. legit.show/s/sentient-os-ai/2026-10-20
Is Sentient OS production-ready?
Legit.Show scores Sentient OS 78 out of 100 — the simple average of its 5 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on Sentient OS (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Reliability; its weakest is Security. 5 of the seven frames returned a score; Performance and Accessibility were not measurable on this service and are recorded as null — not as zero. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — not measurable on this service (null — not scored as 0)
- Accessibility — not measurable on this service (null — not scored as 0)
- Security — 45/100How this compares across the catalogue: The Web Security Baseline
- Privacy — 70/100How this compares across the catalogue: The Privacy Gap
- Reliability — 100/100
- Standards — 75/100
- Discoverability — 100/100
What we measured
- Security headers present: HSTS.
- No Content-Security-Policy.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 143 ms to first byte.
- Returns a proper 404 for unknown routes.
- 3 of 3 sampled routes reachable.
- Has a reachable privacy policy.
- Sets cookies / loads scripts with no consent prompt.
Who it's for
macOS users · privacy-conscious individuals · remote workers · productivity enthusiasts
Pricing
Free, open source
Sources and updates
- Description
- Taken from sentient-os.ai's own website on 2026-08-25.
- Operator
- Sentient, as named in sentient-os.ai's terms, privacy page or footer.
- Benchmark
- Measured by Legit.Show from the live site, the way any visitor sees it — with no access to its code or accounts. Same method for every product, and no AI decides the score. Last checked 2026-10-20.
Put together from public information, without Sentient OS's involvement. If anything here is wrong, tell us and a person will check it.
Visit Sentient OS → · Alternatives to Sentient OS → · How this was measured →