Who founded Sentient OS?

Sentient OS was founded by Jesai Tarun, Aditya Vellanki in 2026.

Who are Sentient OS's investors?

Sentient OS's investors include Y Combinator.

Where is Sentient OS headquartered?

Sentient OS is headquartered in San Francisco, US.

Sentient OS

YC F26

San Francisco, US · Founded 2026 · 2 employees · 1 known investors

Find your way into Sentient OS

Paths you didn't know you had: your email and LinkedIn already hold routes to the Sentient OS team. We find them for you
2nd- and 3rd-degree connections: the friend-of-a-friend routes that take hours to manually find through your inbox or LinkedIn
Answers now, not in days: momentum is everything in a raise. Skip asking around whether someone knows someone

Days of research, done the moment you sign in, with every route ranked by how warm it is.

Sentient is a free, open-source macOS application that runs an on-device LLM to build a personal knowledge base from a user's files and proactively completes tasks through computer use. It stores data locally in plain markdown, uses a small on-device model plus the user's own frontier model (ChatGPT, Claude, OpenRouter, or LM Studio), and is optimized for Apple silicon.

AI & Machine Learning Consumer Deep Tech Enterprise Software Future of Work Artificial Intelligence Productivity AIUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (F26)

Sentient OS was founded in 2026 by Jesai Tarun and Aditya Vellanki.

Jesai Tarun Founder & CEOFounder and CEO of Sentient OS (YC F26), which builds on-device AI designed to understand a user's context and complete tasks via computer use. He previously created Writing Tools, an open-source writing assistant, and has a background in on-device machine learning inference, including work with Apple's MLX framework.

Aditya Vellanki Co-FounderFounder and CTO of Sentient OS (YC F26), an enterprise software company. He has built consumer products and decentralized protocols, and has spent the past two years working on enterprise products.

Investors · 1

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · Not right? Tell us

The YC application· Fall 2026 batch

▶ Application video — watch on YC ↗

Related companies · 5

DartDart is an AI-powered project management platform that integrates task execution, planning, and collaboration tools with AI features like subtask generation, duplicate detection, and design prototyping. It serves teams across software development, marketing, and operations in various organizational sizes.

PartyMaitai provides software that corrects AI model outputs in real-time and automatically retrains models based on their errors, enabling enterprise customers to deploy more reliable AI applications that improve over time.

ThirdlayerDex is an AI-powered workspace assistant that ingests operational data across a user's tools and integrations, organizing it into structured context and a knowledge base. It automates tasks, generates insights, and proactively maintains information while users work across their browser and connected applications.

MotionMotion is an AI-powered work platform that unifies projects, tasks, docs, and meetings in one interface, with autonomous AI agents that handle scheduling, reporting, and administrative work for teams. The platform serves executive teams and organizations looking to increase productivity without expanding headcount.

WillowWillow is a voice-to-text application that transcribes and formats spoken words into written text across desktop and mobile devices. It serves professionals and knowledge workers across any app or device, using AI to handle formatting, punctuation, and style adaptation.

Companies working in the same space as Sentient OS.

Legal entities · 1

corporate structure

Sentient OS, Inc.

Frequently asked questions

What does Sentient OS do?: Sentient is a free, open-source macOS application that runs an on-device LLM to build a personal knowledge base from a user's files and proactively completes tasks through computer use. It stores data locally in plain markdown, uses a small on-device model plus the user's own frontier model (ChatGPT, Claude, OpenRouter, or LM Studio), and is optimized for Apple silicon.
Who founded Sentient OS?: Sentient OS was founded by Jesai Tarun, Aditya Vellanki in 2026.
Who are Sentient OS's investors?: Sentient OS's investors include Y Combinator.
Where is Sentient OS headquartered?: Sentient OS is headquartered in San Francisco, US.