Founder · Instinct

Noah Shinn

Founder & CEO of Instinct, an ai company based in San Francisco.

Founder · CEOSan FranciscoAI

Founded

2026

San Francisco, California, United States

Raised to date

$350M

3 rounds on record

Latest round

Series A

$75M · Aug 2026

Team

1–10

Spear Street Technology, Inc.

About

Noah Shinn is Founder & CEO of Instinct, an ai company based in San Francisco, founded in 2026. Instinct's most recent disclosed round was a funding round of $250M in Aug 2026.

Compiled from StartupFox records · updates as coverage is published

Company

Est. 2026

Instinct

AI · San Francisco · 1–10 people · Active

San Francisco-based AI startup behind Instinct, a personal AI agent with no app interface. Users connect it to their email, calendar, messaging and devices and interact by text message or phone call, and it takes real-world actions such as booking travel, shopping and cancelling subscriptions. Operated by Spear Street Technology, Inc. Founded in 2026 by Noah Shinn, a former research scientist at Sierra.

Funding

Aug 2026Series A$75MKleiner Perkins (Mamoon Hamid)

Aug 2026Series B$250MIndex Ventures, Benchmark

May 2026Seed$25MConviction (Pranav Reddy), Greenoaks (Neil Mehta)

Company profile →3 rounds on record

Journey with Instinct

2 milestones

Apr 2026Founded
Spear Street Technology, Inc. registered in California by Noah Shinn, a 23-year-old former research scientist at Sierra, to build the Instinct personal AI agent. Read the story →
Aug 2026Milestone
Valuation rose from ~$50 million to $2.5 billion in about four months across seed, a $500M-valuation Series A and a $2.5B-valuation Series B, all before public launch; the product drew privacy and security concerns over its data-retention terms and agent permissions. Read the story →

Coverage

1 story

Funding · 28 Aug 2026 · 7 min read

Viral AI Assistant Instinct Raises $250 Million at a $2.5 Billion Valuation Months After a $50 Million Mark