Report No. 018 · Tue, 29 Sept 2026

Startup Scout: Instinct

Pick of the day

Instinct

A text-message and phone-call AI agent that connects to a user's email, messages, calendar, screen and location to actually complete errands, which has gone from a 500 million dollar valuation to 10 billion dollars in about five weeks.

instinct.com

Consumer AI / Personal Agents · San Francisco, CA

Series C · $1B

38/50Scout score

Problem: 7
Traction: 9
Founders: 8
Market: 8
Novelty: 6

Why today

Today's pick is Instinct, the invite-only personal AI agent from Spear Street Technology, whose 1 billion dollar Series C at a 10 billion dollar valuation is the loudest funding story of the last 48 hours. Announced this week and led by Sequoia Capital, Benchmark and Coatue, the round comes barely a month after Instinct raised 250 million dollars at 2.5 billion dollars, a roughly 4x jump in valuation in under five weeks on the strength of triple-digit-thousand user counts, 10 percent compounding daily growth, and more than a billion dollars a year in transaction volume already moving through the app. That combination of speed, scale and a 23-year-old founder with a strong research pedigree stood out against a busy day of otherwise solid but more incremental raises: SiMa.ai's 150 million dollar physical-AI chip round, Quartermaster's 140 million dollar maritime-intelligence raise, Outmarket's insurance-automation round, and Humanos's seed for AI-agent risk scoring.

Problem

Most people spend a meaningful chunk of every week on logistical overhead that doesn't require judgment so much as persistence: booking flights and restaurants, rebooking them when plans change, calling customer service to cancel a subscription, tracking a delivery, coordinating a schedule across other people's calendars. Existing chatbots can answer questions about these tasks but stop short of doing them, leaving the user to still open the app, make the call or fill in the form themselves. Instinct's bet is that the real unlock isn't a smarter chat window but an agent willing to act end to end, reached the way people already reach another human: by text or phone call.

Product

Instinct is reached by text message, WhatsApp or phone call rather than an app, and it connects to a user's email, messaging, calendar, screen, audio and location to take actions on their behalf: booking flights, restaurants and rides, ordering groceries, cancelling subscriptions, negotiating bills and handling email follow-up. It operates through a persistent cloud computer and stored account access, letting it act with comparatively few interruptions once a user has granted permissions. It launched a free, invite-only private beta in February 2026 that stayed under the radar until a burst of viral attention in early August, and it remains invite-only and unpriced today.

Traction

Instinct's user base passed 100,000 by mid-September while still invite-only and without a marketing budget, and the company has reported roughly 10 percent compounding daily growth in transaction volume. Users are already moving more than a billion dollars a year in spending through the agent, with travel bookings accounting for about half of that volume. That combination, real usage intensity on a small, gated user base, is what has driven the valuation from roughly 500 million dollars in early August to 2.5 billion dollars by late August and 10 billion dollars by late September, even though the product does not yet charge for access.

Team

Instinct is built by Spear Street Technology, Inc., registered in San Francisco in April 2026 by founder Noah Shinn, a 23-year-old former research scientist at Sierra and the first author of the widely cited Reflexion paper on self-reflective AI agents. His research background is a close match for what Instinct is trying to ship: an agent that has to plan, act and recover from mistakes autonomously rather than simply answer questions, and investors have repeatedly cited that founder-product fit alongside the growth numbers when justifying the pace of the valuation increases.

Funding

Instinct raised 1 billion dollars in a Series C round announced this week, led by Sequoia Capital, Benchmark and Coatue, at a valuation of 10 billion dollars. The round lands roughly five weeks after Instinct closed a 250 million dollar Series B at a 2.5 billion dollar valuation in late August 2026, itself a steep jump from an earlier valuation near 500 million dollars only weeks before that. The pace, four rounds' worth of valuation growth compressed into about a month, reflects investor urgency to get into a company whose usage metrics were compounding faster than typical due-diligence timelines could keep up with.

Competitors

Instinct's closest dedicated startup rivals are Wajo, Ollie and Poke, smaller personal-assistant products built around similar messaging-first interfaces; Poke's maker, the Interaction Company of California, agreed to be acquired by Cognition in July 2026. The bigger competitive threat is from platform incumbents pushing agentic assistants of their own: OpenAI's ChatGPT, xAI's Grok and Apple's Siri are all adding agent capabilities, and Meta has built an OpenClaw-like personal agent called Muse. Instinct's differentiation is combining a text-message interface, a persistent cloud computer, stored account access and a willingness to act with few interruptions, a bundle competitors have so far kept more separate.

VC lens

Would YC fund it? Almost certainly, if it weren't already worth 10 billion dollars: a 23-year-old technical founder with directly relevant research credentials, triple-digit-thousand users acquired with zero marketing spend, and 10 percent daily compounding growth is close to the platonic ideal of a YC-shaped outlier, though its capital-raising pace now looks more like a growth-stage sprint than an accelerator bet.

Biggest risk: Instinct has no revenue yet and is monetizing nothing while burning goodwill on trust: TechCrunch reported in August that beta users experienced retained data after disconnecting accounts, a successful prompt-injection attack via email, and unapproved actions taken on their behalf, and its original terms of service granted a perpetual, irrevocable license to user data before a public backlash forced a rewrite. With OpenAI, Meta, Apple and xAI all shipping competing agents, Instinct's edge depends on staying ahead on both capability and trust simultaneously, and a single serious security incident at this valuation would be difficult to recover from.

Runners-up

SiMa.ai

$150 million Series C co-led by Fidelity Management & Research and Amplify Partners at a $1.45 billion valuation to scale its physical-AI chips for humanoids, automotive and drones. (Sep 28)

Quartermaster

$140 million round, a $100 million Series B led by Insight Partners plus $40 million in venture debt from Stifel, to expand its maritime ocean-surveillance sensor network. (Sep 28)

Outmarket AI

$34.5 million Series B led by SignalFire to expand its AI platform automating workflows for insurance agencies. (Sep 28)

Humanos

$3.2 million seed round led by Anthemis to build live, continuously updated risk scores for AI agents. (Sep 28)

Archive

38 reports · click a row to open it

Date	Winner	One-liner	Runners-up
2026-10-19	Modal Labs	750 million dollar Series D led by Accel at a 15.75 billion dollar valuation, as the AI infrastructure startup says its annualized run rate crossed 1 billion dollars with usage tripling in five months, built on serverless GPU access for inference, training and agent sandboxes	OMass Therapeutics, Scanntech, North.cloud, Fortem Technologies
2026-10-18	Mueon	65 million dollar Series A led by Maverick Silicon, as the Portland semiconductor startup founded by two Intel veterans scales Cubelets, modular 3D blocks bundling compute, memory, power and cooling to cut AI data center power and density limits, already in use by AI chip startup d-Matrix	Estuary Biotherapeutics, Fission, Otter Health, HyLight
2026-10-17	Chariot Claims	10 million dollar Series A led by Silverton Partners, as the rebranded ClaimClam legal-tech platform scales automated matching of consumers to mass arbitration and class-action claims over hidden fees and hard-to-cancel subscriptions, building on more than 65,000 claims already processed toward an estimated 92 million dollars in settlements	Marklo, Siena, Rein Security, Peppermint
2026-10-16	Salience Labs	125 million dollar oversubscribed Series B led by Bullhound Capital, as the Oxford-spun-out photonics company wins new backing from AMD Ventures and Intel Capital for all-optical circuit switches meant to break the power and latency ceiling facing electronic switches as AI GPU clusters scale toward tens of thousands of chips	Navra, Type One Energy, Oratomic, Gallatin AI
2026-10-15	Soufflé Therapeutics	135 million dollar Series B led by Juvia Group, as the MIT bioengineer Robert Langer-founded biotech works to deliver RNA medicines to muscle and heart tissue, a problem that has stalled the entire siRNA drug class, backed by more than 3.5 billion dollars in big pharma partnerships before any program has reached the clinic	ICON, Pluto Security, Nous Research, Atomic Machines
2026-10-14	Vitalize	31 million dollar Series A led by Oak HC and FT, as the Y Combinator-backed startup unifying hospital staffing, scheduling, patient flow and capacity management expands after enterprise customers reported cutting manual scheduling work and premium labor spend	Gallatin AI, byteXL, Desible.ai, Credfix
2026-10-13	Universal Quantum	100 million dollar Series A co-led by DCVC and Firgun Ventures, a record raise for a UK quantum computing company, as the University of Sussex spinout races to prove its modular trapped-ion chiplet interconnect can out-scale newly public rivals Quantinuum and IonQ	Atlas Atomics, Type One Energy, Sabi, Catalyst
2026-10-12	Manus	500 million dollar funding round led by Boyu Capital and IDG Capital, the general AI agent's first raise since China blocked Meta's 2 billion dollar bid for the company and barred its founders from leaving the country, as Manus pursues a reported 4 billion dollar valuation on roughly 125 million dollars of annualized revenue	Oratomic, Matchpoint Therapeutics, Oxide Computer, Stuut
2026-10-11	Arena	200 million dollar Series B co-led by Lightspeed Venture Partners and Khosla Ventures at a 3.1 billion dollar valuation, as the company behind the Chatbot Arena leaderboard nearly doubles its valuation in ten months on roughly 100 million dollars of annualized revenue from selling AI evaluation and alignment benchmarking to labs and enterprises, while Scale AI's new Seal Showdown contests its neutral-referee position	Gallatin AI, Rein Security, Rivercell, TeddyHoldings.AI
2026-10-10	Multiply Labs	75 million dollar Series B led by Patrick Soon-Shiong's NantWorks with new investors AstraZeneca, Lingotto, Teradyne and Strange Ventures, as the decade-old biologics-manufacturing robotics company passes 100 million dollars raised on the strength of its first commercial sale, an up to 85 million dollar deal with Retro Biosciences, while competing against well-funded rivals Cellares and Ori Biotech to automate cell and gene therapy production	Zomint, Parakeet Health, OuterSignal, Efficient Computer
2026-10-09	RougeTx	58 million dollar Series A led by BioGeneration Ventures and Angelini Ventures with the European Investment Bank's Aurea facility and Kurma Partners also investing, as the Leiden University Medical Center spinout launches the first disease-modifying candidate for hereditary hemorrhagic telangiectasia, a bleeding disorder with no approved therapies, built on more than two decades of pericyte research	GMI Cloud, Varda Space Industries, doxx.net, Beyond Appliances
2026-10-08	General Medicine	120 million dollar Series B led by Andreessen Horowitz with Eli Lilly and Mercy Health joining, as the PillPack founders' online healthcare marketplace brings total funding to 152 million dollars less than three years after launch on hundreds of thousands of customers and an 80 Net Promoter Score	Noah, Nous Research, Buntar Aerospace, Monid
2026-10-07	Vinci	250 million dollar Series B at a 1.5 billion dollar valuation co-led by Advent, Temasek and Xora Innovation, as the Palo Alto physics foundation model startup jumps from a 46 million dollar seed and Series A disclosed last December to a tenfold valuation leap less than a year later, aiming its technology at chip design incumbents Cadence and Synopsys	Spiko, Hadrian, WhiteLab Genomics, Inbolt
2026-10-06	Pandektes	13.5 million euro Series A led by Munich's Alstin Capital, as the Copenhagen legal-research startup grows revenue sixfold and wins customers switching off LexisNexis, Westlaw, Beck and Karnov with an API-first legal data platform	OneByZero, Fleuret AI, Laki Power, RobCo
2026-10-05	PaleBlueDot AI	200 million dollar Series C at a 3.2 billion dollar valuation led by ComputeCore, as the Palo Alto AI compute platform nearly triples its valuation in under nine months on more than 5 billion dollars of signed customer contracts	Simple Energy, Elio Mortgage, Menos AI, SedMed
2026-10-04	Flow Engineering	50 million dollar Series B at a 750 million dollar valuation co-led by Valor Equity Partners and Atreides Management, as the AI-native systems-engineering platform for hardware teams grows to over 100 million requirements managed and adds General Motors, Anduril and Intuitive Machines as customers less than a year after its Series A	Miter, Kanu AI, Beltic, Satlyt
2026-10-03	EliseAI	350 million dollar round at a 4 billion dollar valuation led by Andreessen Horowitz and Bessemer Venture Partners, as the housing and healthcare conversational AI company nearly doubles its valuation in thirteen months on 200 million dollars of ARR and five straight years of 100 percent revenue growth	Kahua, Breye Therapeutics, Amara, Kuro
2026-10-02	Armadin	255.5 million dollar Series B co-led by Andreessen Horowitz and Accel at a 2.5 billion dollar valuation, as Mandiant founder Kevin Mandia's agentic attacker-swarm security platform runs live attack campaigns for Fortune 500 and government customers seven months after stealth	Foundational, Seeds Fincap, Numeral, Chamelio
2026-10-01	General Intuition	220 million dollar Series B at a 6.2 billion dollar valuation, nearly tripling in three months, as the AI foundation model startup trains action models on billions of gameplay clips from its own sister company Medal	Varda, Jeeves, Sand.ai, Arivihan
2026-09-30	Tiny Health	Oversubscribed $33M Series B led by B Capital as the at-home microbiome testing company posts 1,624% three-year revenue growth and quadruples its practitioner-facing business	Modulate, erad, Baselayer, Ande
2026-09-29	Instinct	$1B Series C led by Sequoia, Benchmark and Coatue at a $10B valuation, a roughly 4x jump in five weeks, as its text-message AI agent passes 100,000 users with 10% daily compounding growth	SiMa.ai, Quartermaster, Outmarket AI, Humanos
2026-09-28	Solcoa Industries	$75M seed ($45M equity led by Bain Capital Ventures plus $30M JPMorgan-anchored debt) to build a 500-tonne Nevada plant using a novel rare-earth metalmaking process, aimed at breaking China's 95% grip on metallization	Clastix, Prevision Medicine, Spiich, Barq
2026-09-27	Ultraviolette	$85M Series E led by Yali Capital and TDK Ventures; Bengaluru performance EV motorcycle maker plans US entry by 2027 on 4-5x revenue growth	Micro1, Kasvu Therapeutics, HIFI, Dextr AI
2026-09-26	Island	$400M Series F led by Evolution Equity Partners at a $6.4B valuation, more than doubling its 2024 valuation as the enterprise browser expands into governing AI agents	Cyera, Confido, Heidi Health, Firecrawl
2026-09-25	Ema	$77M Series B led by Creaegis, more than quadrupling its valuation as every existing backer doubled down and Wipro scales its AI Employees to 240,000+ workers	Ando, Kasvu Therapeutics, HIFI, Nuvah
2026-09-24	TEKEVER	$580M Series D led by UC Investments and Baillie Gifford; Ukraine-proven AI surveillance drone maker hits $6.4B valuation on a new 400M pound UK Army contract	Enveda Biosciences, Basecamp Research, Numeral, Brahma AI
2026-09-23	Verda	$189M oversubscribed Series B led by Emergence Capital; profitable Nordic GPU cloud crosses $1B valuation on $165M ARR	Snorkel AI, Nexstrom, MacroCycle, Demoverse
2026-09-22	BCI-Sonics	RMB 200M (~$30M) Pre-Series A led by HSG and Yunqi Capital; non-invasive ultrasound brain-computer interface racing China's invasive BCI leaders and OpenAI-backed Merge Labs	Spott, HighLife, CellPoint, Benford
2026-09-22	Amber Electric	€49M Series E led by Morgan Stanley's 1GT; automates 50%+ of Australia's home batteries, expanding VPP software into Europe via E.ON	Corridor, Paymob, Unit1 Studio, Drivn
2026-09-18	TypeSafe AI	$40M seed led by DCVC; "System One" model returns typed decisions for software, not chat — built by RLHF co-inventor Diogo Almeida	Space Epoch, Facilo, Treble Technologies, DheyaTech
2026-09-17	Exein	$270M Series C at $1.7B valuation (30x in 2 yrs); kernel-level security layer for robots, drones and autonomous machines	Anew Labs, Delos Data, CADDi, AIUC
2026-09-16	Euclyd	€200M+ Series A; Samsung-backed (investor + manufacturer) AI inference chip built to out-efficiency Nvidia, chaired by ex-ASML CEO	Profound, Flam, ENCOS, Nutshell Therapeutics
2026-09-15	Fortaegis	$50M oversubscribed Series A; quantum-safe security rooted in silicon, chaired by Quantinuum founder Ilyas Khan	Qupital, Tandem Health, Atomarine, UniqYou
2026-09-11	Positron AI	$875M Series C at $5B valuation; memory-first inference chips challenging Nvidia's HBM lock-in	The Boring Company, Mach Industries, Rogo Technologies, Swish
2026-09-10	Cognition AI	$2B+ Series E at $48B valuation; Devin autonomous coding agent nears $900M run-rate	DigitalPaani, Algomatic Dynamics, Limetax, Fundly.ai
2026-09-09	Bluecore Energy	Floating nuclear reactor barges for ports; $50M seed just 2 months after stealth launch	QNu Labs, ARC Ride, Circolife, Hope Care
2026-09-08	Pixxel	$100M Series C, India's largest spacetech round; building orbital AI data centers	Nua, Navana.ai, GalaxEye, Atoms (Kalanick)
2026-09-07	Medulance	GPS-dispatched ambulance network raises ₹24 Cr Series A-2	Comet, Mokobara, Kit (Speakeasy), XDOF

Sources

Compiled from search results: article pages were unreachable from the publishing environment on this date, so every fact here was cross-checked against at least two independent reports.