Instinct AI just talked its way to a $10 billion valuation - here's what it actually does

A four-month-old startup with no public app, no pricing page, and no revenue is reportedly closing in on a $10 billion valuation. The product is called Instinct, and you can't even download it unless someone already inside sends you an invite.

That's not hype for hype's sake. People who've gotten access are using Instinct to book haircuts in Copenhagen, file visa-on-arrival paperwork for Bali, snag restaurant tables, and sign up for airline loyalty programs — all by texting a phone number the way you'd text a friend. No app to open, no dashboard to configure, no prompt engineering required.

Here's what Instinct actually is, why investors are throwing money at it, and where it still falls flat on its face.

What is Instinct AI, exactly?

Instinct is an invite-only personal AI agent built by Spear Street Technology, a San Francisco startup founded by Noah Shinn, a former researcher at the AI customer-service company Sierra. You reach the agent by texting or calling a phone number — the primary interface is a text conversation, including iMessage and WhatsApp, plus phone calls, and behind that conversation, the agent works on a persistent cloud computer and reaches your connected services with stored credentials.

There's no separate app to learn. The startup's own site describes it simply: "Instinct is a personal assistant that understands what you're working on and what's important to you. It's trained to use a phone and a computer. You can text or call it."

That "no new interface" pitch is a big part of why it's spreading so fast. You're not learning a workflow builder or memorizing slash commands — you're just texting someone (something) to handle a task, the same way you'd text a very capable assistant.

Why is everyone suddenly talking about Instinct?

The money trail tells the story. The San Francisco-based startup's valuation has ballooned from $100 million to over $2.5 billion in just a matter of weeks — and that was before the latest news. Spear Street Technology is now in discussions to raise $1 billion, a figure that would value the company at $10 billion, according to a report citing an unnamed source. Sequoia Capital and Benchmark have reportedly been in talks to lead the financing.

What makes this wilder is that the product still isn't public. The startup is seeking new funding as its invitation-only AI agent's user base has surpassed 100,000. That's 100,000 people using something you can't sign up for on your own — you need an invite from someone already in, which is exactly the scarcity play that made Clubhouse feel inevitable back in 2020, except this time the product does real work instead of hosting audio chatrooms.

There's also a genuine cost problem behind the fundraising urgency. Instinct has sometimes informed users that it is operating at full capacity and "responses may be slower" as people use it for tasks like negotiating bills and replying to emails. Running a persistent cloud computer for every single user, 24/7, is expensive — and Shinn has said he doesn't want to charge users, suggesting the company could try advertising or other approaches instead.

What can Instinct actually do today?

The task list is broader than most people expect from a chatbot. Instinct connects to your applications and devices, including email, messaging, screen, audio, and location, and takes actions on your behalf: users report it booking and rebooking flights, making restaurant reservations, buying groceries and concert tickets, cancelling subscriptions, cleaning up inboxes, and planning trips.

A few things stand out about how it handles these tasks:

• It works while you're not watching. Instinct operates a persistent machine of its own, with browser access and cached credentials, so it can keep working between your messages — that's how a haircut booking request turns into a confirmed appointment hours later, without you babysitting the conversation.
• It's built to be proactive, not just reactive. The company says the core model is trained to handle the personal texture of everyday life: following up on threads you dropped, calling or texting you first, arranging the ride to the airport.
• It can act with real authority. This is the part people underestimate — its own Terms of Service appoint the service as your agent, authorized to enter into binding agreements, commitments, and transactions on your behalf. That's not a small detail. It means Instinct isn't just drafting an email for your approval; it can actually complete the booking, the cancellation, or the purchase.
• Spending is capped by design. Reports of the agent using a spend-limited virtual card when it pays for things suggest the team built in guardrails so a single mistake doesn't turn into a runaway bill.

One small but telling design choice: Instinct doesn't always send a full text reply. Sometimes it just reacts to your message with an emoji, the way a person would if they'd seen your text and were already on it. In a world where most AI chat responses run long and over-explain themselves, that restraint feels almost human.

Where does Instinct still hit a wall?

For all the "this feels like magic" energy, early testers keep running into the same category of problem: the open web wasn't built for agents. Early testers hit CAPTCHAs, two-factor walls, and a failed high-demand ticket purchase that crashed repeatedly — the web is still hard for every agent.

Tasks that require a native phone app instead of a browser, or a checkout flow in a language and layout the model hasn't seen much of, are where things stall out. A visa-on-arrival form on an unfamiliar government site, or a purchase flow buried inside a mobile-only app, can trip up even a well-resourced agent running its own cloud computer.

There's also a structural quirk worth knowing about before you get an invite: it's one crowded thread — multiple early users wanted separate threads for separate jobs, because a single continuous conversation gets noisy when it's running your life. If you're using Instinct for travel planning, subscription cleanup, and email triage all at once, expect one long scroll, not separate project folders.

What's the privacy catch everyone should know about?

This is the part that deserves the most attention before you hand an agent access to your inbox. There are significant privacy concerns — users have reported the agent accessing and retaining data, like emails, even after permissions were revoked, and its terms and conditions have raised red flags.

Specific incidents have already gone public. Peter Yang said Instinct would not delete his Gmail records when he asked, and Claire Vo found it kept summarizing her inbox after she disconnected access, with emails stored in plain text. Someone else went further: Alex Cohen showed the agent could be phished and then deleted his account.

The core issue isn't unique to Instinct — it's a gap in how every agent-with-standing-access product is built right now. Revoking access is not the same thing as deleting data, and the terms of service that let an agent act on your behalf can grant far more than the task in front of it needs. If you're considering an invite, treat "disconnect" as a starting point for a conversation with support, not a guarantee that your data is gone.

How do you actually get an invite?

Access has moved in stages as the company scales up its infrastructure. As of the most recent reporting, it remains invite-only — you can join the waitlist at instinct.co or get an invitation from an existing member, and the company says it is scaling up compute before opening access wider.

Practically, that means two paths:

1. Join the waitlist directly on Instinct's site and wait for the company to widen access as it adds compute capacity.
2. Find someone already using it. Early adopters have been sharing invite codes publicly on X, and given how fast the user base has grown — users surpass 100,000 — codes aren't nearly as scarce as the initial "insiders only" framing suggested.

If you're not willing to wait, there are alternatives worth trying in the meantime. Vellum has published detailed comparisons between Instinct and other personal-agent options and is building toward similar territory with more visible permission controls. And with Meta's Muse launching a comparable free personal agent this month, the invite-only scarcity that made Instinct feel special may not last much longer anyway.

What does this mean for the AI agent market?

Zoom out and Instinct is a data point in a much bigger trend. The AI agents market is projected to expand significantly, from approximately $11 billion this year to over $50 billion by 2030, with personal assistant agents being a key growth driver. Capability is climbing fast, too — the Stanford AI Index 2026 recorded agent success rates on real-world terminal tasks rising from 20% in 2025 to 77.3%. That jump is a big part of why something like Instinct is even possible right now, and why the same jump makes the privacy stakes higher, not lower.

The honest read: Instinct isn't the finished product of personal AI agents, it's the loudest current proof that people want this — a text thread that quietly runs their errands, no interface required. Whether it's Instinct, Meta's Muse, or whatever ships next, the shift away from "open an app and prompt it" toward "just text it and walk away" is the trend actually worth watching. Get comfortable with what data you're handing over before you get comfortable with how convenient it feels.