# Sentient OS

[Sentient OS on Hacklab](https://hacklab.so/org/sentient-os)

Startup · 2 people on Hacklab

## Links

- [Website](https://sentient-os.ai/)
- [Y Combinator](https://www.ycombinator.com/companies/sentient-os)
- [LinkedIn](https://www.linkedin.com/company/sentient-os/home/)

## About

<!-- hacklab:yc-profile -->

## YC company profile

On-device AI that knows your entire life and does your work overnight.

Truly personal AI requires running inference on your life, every day. In the cloud, that’s expensive and a privacy nightmare. On your own chip, it’s free and private.

Our custom inference stack, built on a LiteRT-LM fork, runs on Macs with just 8 GB of RAM. Every night, Sentient’s on-device models process your emails, messages, Granola transcripts, files, and more, building a rich personal knowledge base on your Mac.

Your projects, conversations, commitments, and preferences. Context you’d never have the time to type into a chatbot.

That understanding powers three ways to get work done:

Sidekick: click your Mac’s notch and say “finish this for me.” It already has your context and gets to work across your apps and browser with its own cursor, while you keep working.

Proactive intelligence: wake up to work already prepared. The reply you forgot, drafted. The subscription renewing tomorrow, caught. The report you promised, ready for review. Sentient waits for your approval before acting.

Double Tap: two taps, two seconds, and the reply you would have written appears, drafted from your personal context and writing style. Just review and send.

Open source and built with privacy at its core. Over 30 enterprises use Sentient already.

Our alpha reached 4,000+ users in its first week with $0 marketing. Our launch was the top post of the month on r/macapps.

We’ve raised over $1 million with participation from Y Combinator (F26), Afore, Pioneer Fund, and a16z speedrun’s scout fund.

- **YC batch:** Fall 2026
- **Founded:** 2026
- **Team size:** 2
- **Location:** San Francisco
- **Country:** US
- **Status:** Active
- **Industry:** B2B
- **Stage:** Early
- **Tags:** Productivity, AI
- **YC partner:** Aaron Epstein

## Founders

### Jesai Tarun — Founder/CEO

Founder & CEO, Sentient OS (YC F26). Top 12 AI dev on GitHub at 18.

Featured in WIRED & 40+ publications, twice:
- Hacked iPadOS onto the iPhone 17 Pro via a bootrom exploit (1M+ views).
- Writing Tools, my open-source writing assistant that beat Apple Intelligence to market (30K+ users, 2.4K+ stars).

On-device inference nerd since high school; AIM India's expert voice on Apple's MLX.

Building on-device AI that understands your entire life and proactively finishes your work with computer use.

[LinkedIn](https://www.linkedin.com/in/jesai-tarun-37004725a/)

### Aditya Vellanki — Founder/CTO

18. Co-Founder at Sentient OS (YC F26). Shipping consumer products since 12, built decentralized protocols at 14, building enterprise for the last 2 years.

[LinkedIn](https://www.linkedin.com/in/adityahemanth/) · [X](https://x.com/aditya_vellanki)

[Source: Y Combinator](https://www.ycombinator.com/companies/sentient-os) · Retrieved 2026-11-02. Company information is self-reported on YC.

## Current staff

- [Aditya Vellanki](https://hacklab.so/aditya-vellanki) — Founder/CTO (Present)
- [Jesai Tarun](https://hacklab.so/jesai-tarun) — Founder/CEO (Present)