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Funding Details
| Field | Value |
|---|---|
| Company | Instinct (San Francisco, USA; legal entity Spear Street Technology) |
| Round | Series C |
| Amount | $1B |
| Lead | Sequoia Capital, Benchmark Capital, Coatue (co-led) |
| Participants | Not further disclosed |
| Valuation | $10B (up from $2.5B at Series B, a 4x markup in 30 days) |
| Total raised | Over $1.3B |
| Founded | 2025 |
| Headcount | 14 (per media reports, not company-disclosed) |
What the company does
Instinct is a "personal AI assistant" — no app to open, just text it. It handles the daily grind: booking flights, making restaurant reservations, paying bills, canceling subscriptions. The pitch is an on-call personal chief of staff, not a chatbot.
Founded in 2025 by 23-year-old Noah Shinn, the product launched invite-only in August 2026 and still runs entirely over SMS, with no mobile app. Its core differentiator is the "Trusted Person Network" — an Instinct-to-Instinct protocol that lets one user's agent coordinate plans directly with a friend's agent on their behalf. To execute tasks, Instinct uses its own phone number and computer, and recently added a "concierge" calling feature that can phone businesses to make bookings. Alongside this round, the company also announced an active-detection system that catches hallucinated content mid-generation and strips it out before any action executes or output is shown — whether it actually holds up will take broader usage to prove.
The company has disclosed no user numbers or revenue metrics, and runs on just 14 employees. Its most direct competitor is Meta's Muse, which launched September 8, passed 3.4 million downloads in three weeks, and has already struck commerce integrations with Shopify, PayPal, Instacart, and Expedia — a distribution footprint an invite-only SMS product can't match anytime soon.
What this round signals
What it means for the agent ecosystem
Instinct went from a seed round at a $50M valuation to a $10B Series C in under a year, with the jump from Series B to Series C — a 4x markup — taking just 30 days. That pace puts Instinct in the same conversation as Cognition, the AI coding agent now valued at $48B: capital is pricing the personal AI agent category on "who claims the category" rather than "who has proven traction," at a speed that makes 2021 SaaS multiples look conservative by comparison.
What investors are betting on
Benchmark has now backed Instinct across two consecutive rounds — co-leading Series B alongside Index Ventures, then staying in for Series C. Sequoia and Coatue joining this round signals that the fight to own the "personal computing layer" is being treated with the same logic Sequoia has applied to platform-scale bets like OpenAI: not a bet on what Instinct can do today, but on the winner-take-most dynamics of whoever claims the personal AI assistant entry point first.
Numbers worth watching
- A $10B valuation resting on 14 employees, with no public user or revenue numbers — a textbook case of pricing the category, not the metrics
- The valuation path: $50M seed → $500M Series A (led by Kleiner Perkins) → $2.5B Series B (co-led by Index Ventures and Benchmark) → $10B Series C, all inside a year of founding
- Against Meta Muse's 3.4 million downloads in three weeks, Instinct has yet to publish any comparable adoption number — this round is buying time to catch up on distribution before Meta pulls further ahead, not validating product-market fit that's already proven
Watchlist status
Instinct is not yet on the watchlist, and the current taxonomy (A: Infrastructure / B: Agent Toolchain / C: Agent Capabilities / D: Vertical Industries) has no slot for "consumer personal-assistant agents." Recommend adding a consumer-facing section (e.g., D12, "Personal AI Assistants") and tracking Instinct there, with focus on: the aggressive re-pricing pace despite no disclosed users or revenue, whether the SMS-plus-Trusted-Person-Network approach can hold up against Meta's distribution advantage, and how the new hallucination-detection system performs at scale.
Today's takeaway
A 14-person company with no app and no public user numbers just got re-priced 4x to $10B in 30 days — that's not pricing what has happened, it's pricing the odds of who claims the personal AI assistant entry point first, and it has little to do with visible growth metrics.
References
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