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Sentient OS launch: what they're building and where to launch next

What they're building

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

Batch
Y Combinator Fall 2026
Industry
B2B
Team size
2
Based
San Francisco, CA, USA

Founders

sentient-os.ai ↗

See their funding details ↗

Sentient OS on the record

What they shipped

  • From its YC profile: Nobody's built truly proactive AI, because it requires running inference on your entire life. In the cloud, that's insanely expensive and a privacy nightmare. But not on your own chip. Every night, Sentient's on-device LLM wakes your Mac and understands what's new in your life (email, messages, files, Granola transcripts...), entirely locally, and distills it into a knowledge base. You wake up to your work already prepared: the reply you forgot, drafted from your own context; the subscription you never use renewing tomorrow, caught; the report you promised in the group chat, ready to send. (source)
  • Its own site describes it as: "An on-device LLM understands your entire life, then proactively offers to get your work done through computer use. Private by design. Free and open source." (source)

Who is behind it

  • 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. (source)
  • 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. (source)

Code

  • GitHub organization Sentient-OS-Labs: 3 public repositories, 488 stars in total, mostly Swift; most starred is sentient-os (484 stars, Swift); last push 2026-08-06 (read 2026-09-06). (source)

Timeline

  1. 2026: founded, per its YC profile. (source)
  2. 2026-05-02: "Show HN: Sentient OS – On-device intelligence layer for your entire digital life" posted to Hacker News by TechExpert2910, 3 points and 2 comments. (source)

Other B2B software launches on FoxPlug

  • Touchmark: Market for future inference capacity
  • Traceforce: CrowdStrike for AI Agents
  • Tracer: Combining open-source AI models for better answers at lower cost

Where else to launch Sentient OS

  • Product Hunt ↗
    Self-promotion allowedFree
  • Indie Hackers Forum ↗
    Self-promotion allowed
    Audience: IndieHackers; bootstrapped solo founders sharing revenue and behind-the-scenes
  • Hacker News (Show HN) ↗
    Self-promotion allowed, within the community's rules
    Audience: Hacker News readers; engineers, technical founders, infra-curious people
  • Demand Curve ↗
    Self-promotion allowed, within the community's rules
    Audience: Slack community; tight-knit, pseudo-private peer group
  • No Code Founders ↗
    Self-promotion allowed, within the community's rules
    Audience: Slack community; tight-knit, pseudo-private peer group
  • OnlineGeniuses ↗
    Self-promotion allowed, within the community's rules
    Audience: Slack community; tight-knit, pseudo-private peer group
  • Product Makers ↗
    Self-promotion allowed, within the community's rules
    Audience: Slack community; tight-knit, pseudo-private peer group
  • ProductLed ↗
    Self-promotion allowed, within the community's rules
    Audience: Slack community; tight-knit, pseudo-private peer group

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Featured on FoxPlug: Sentient OS