AI security is suddenly everybody’s favorite panic purchase—and a British chip startup has assembled a cap table that reads like a very strange dinner party. Quick catch-up before we dig in: Venture money is clustering around startups positioning themselves as foundational players in model platforms, infrastructure, applied tooling, physical AI, and efficient or sovereign AI. The latest marker before this episode was Augment Code’s $227 million Series C, led by Index Ventures, at a valuation above $2 billion—another costly bet on the AI tooling layer. This is Startup Fundraising. Three agent-security checks hit in one day; let’s see who bought evidence and who bought a very expensive forecast. This one's from SiliconANGLE:
Artificial intelligence security startup Zenity Ltd. said today it has closed on a $125 million Series C round of funding to expand its platform, which secures autonomous agents in production across large global organizations. Today’s round was led by Norwest and saw participation from SoftBank Vision Fund 2, Qumra Capital and others, including Hitachi Ventures, LG Technology Ventures, Vertex Ventures, DTCP and Intel Capital.
That AI funding pile-up around infrastructure and tooling now has a security entry: Zenity’s $125 million Series C. Norwest led; SoftBank Vision Fund 2 joined, along with Intel Capital, Hitachi Ventures, and a pretty crowded follow-on bench. One hundred twenty-five million to secure agents that can touch enterprise systems, call tools, and execute work—fine. But at $185 million raised total, Zenity has to show it can stop an agent from doing expensive damage, not just map the scary diagram. Zenity is targeting agents already operating in production, beyond model and prompt protection. With Norwest leading this round, the diligence question had to be whether that distinction turns into a budget line or just a slide title. And every company says agents are exploding across every organization. Great—then show the deployments, the incidents caught, and the renewals. A $125 million war chest is a very pricey way to discover enterprises still want a human approving the risky clicks. Here's Sofia Chesnokova at Tech Funding News:
James Dacombe started Olix in London in 2024 when he was 23. Two years later, the AI chip startup raised $312 million at a $3.3 billion valuation. This is more than triple its valuation from February, which was just over $1 billion.
Olix went from just over $1 billion in February to $3.3 billion before its first customer racks land. That is a $312 million wager that a London startup founded in 2024 can dent Nvidia. TFN says Fundomo led, with existing investors increasing their checks and Reed Hastings plus Arm joining the round. A Netflix founder and a chip-industry incumbent on an Nvidia-rival cap table—not exactly subtle. Arm backing an explicit Nvidia challenger is a serious strategic signal. But $3.3 billion says Olix has to ship racks that customers actually want to buy, not merely racks that make a very handsome slide deck. Nick McKeown joining the board while former Wise executive Matt Briers takes the CFO seat suggests they’re gearing up for a much harder next chapter: delivery, margins, and follow-on financing. From Horizon3:
Horizon3, the AI-Native Proactive Security Company behind NodeZero®, the World’s Best AI Hacker™, today announced a $250 million Series E at a valuation of more than $2 billion, tripling its valuation from $650 million at Series D in just over a year.
Two hundred and fifty million dollars at more than $2 billion—okay, Horizon3 has 7,000 customers and says ARR grew 120%. That is actual operating evidence, not an AI-agent mood board. NightDragon and NEA, both existing investors, co-led, with seven new names joining them. The people holding the prior mark were happy to pay up—from $650 million to above $2 billion in just over a year. But tripling the valuation needs a brutal execution plan. NodeZero has run 310,000 production tests; now prove autonomous pentesting can keep finding costly problems once those first 7,000 customers are already in the door. Zenity’s $125 million round earlier made the category look busy. Horizon3’s numbers make it look like a real business—though the liquidation stack still matters a great deal more than the cheerful $2 billion headline. Cryptorank writes:
V12, an AI-first offensive security startup, has raised a $10 million seed round led by Electric Capital to build autonomous systems that discover and exploit software vulnerabilities at scale. The raise follows V12's AI agent independently earning a $2.5 million bug bounty for finding a critical bug in a major blockchain that put more than $100 million in user funds at risk, according to a company post.
V12 raised $10 million after its agent pulled a $2.5 million bug bounty for catching a blockchain flaw threatening more than $100 million in user funds. Finally: a security AI that did the job before it sold the deck. Electric Capital leading the seed makes sense: crypto is V12’s initial wedge, and the proof point is unusually concrete. Twenty-five cents of bounty revenue per dollar raised is a pretty healthy first proof point. And it’s a $10 million seed, not a $125 million victory lap. They’re offering self-serve access with $200 in credits—good. Point the agent at code, show the exploits, and let the scoreboard get rude. V12 calls the ambition a “cyber nuke,” which is not a phrase legal counsel usually circles in green. But the founders’ Zellic history—1,500 reviews for more than 500 clients—does give the team some operating credibility beyond the bounty. GOV.UK writes:
Based in London and with offices in Bristol, OLIX is developing faster, cheaper and more energy-efficient AI chips and is one of the UK’s newest unicorns - meaning it is valued at more than $1 billion. The investment reflects the UK’s ambition to back homegrown companies developing the critical technologies that will drive the modern reindustrialisation of Britain, and power the next wave of AI innovation.
We just covered OLIX’s $312 million private round; now the UK government’s Sovereign AI fund is joining the cap table. Reed Hastings, Arm, private capital, and Whitehall all backing a London chip startup—very normal term-sheet dinner party. It’s Sovereign AI’s fifth equity check since launch, and they’re buying into a $3.3 billion chip company founded in 2024. Public capital can call it reindustrialisation; somebody still has to ship silicon that beats Nvidia on cost, speed, or power. The government’s stated goal is to keep the economic upside in Britain, which is a coherent strategic rationale. But equity alongside strategic investors puts the terms under a microscope—governance, access, and who takes the pain if the next chip cycle slips. And OLIX went from just over a billion dollars in February to $3.3 billion in under six months. That is a very expensive promise about faster, cheaper AI chips. If today’s briefing helped, please subscribe or leave a review wherever you’re listening. It helps more people find Startup Fundraising, and it helps us keep these daily briefings coming.
Looking ahead, Olix says it plans to bring its first products to customers next year. Links to every story are in the show notes, so take a look at anything you’d like to explore further.
That’s Startup Fundraising for today. This is a Lantern Podcast.