Fundraising Fox

Irregular

Tel Aviv, IL Β· Founded 2023 Β· 52 employees on LinkedIn Β· 5 known investors

Irregular is a frontier security lab focused on securing advanced and increasingly capable AI systems. It positions itself as a security research organization for the AI industry.

Also known as Pattern Labs

Founders & leadership

Irregular was founded in 2023 by Omer Nevo and Dan Lahav.

ONOmer Nevo
Omer NevoinCo-founder & CTOFounder/CEO at NeoWize
DLDan Lahav
Dan LahavinCo-Founder & CEO

Investors Β· 5

Also in the syndicate Β· 2

Assaf RappaportOfir Ehrlich

Funding

SEC filings, press & company announcements

$80M disclosed across 1 of 3 rounds Β· 2025

Source: company announcements and press reports β€” follow each round's link for the claim.

Valuation Β· disclosed

Disclosed events
$450Mvaluation at Series ASep 2025
filing β†—

Source: SEC prospectus filings, and round valuations the company or its investors disclosed β€” follow each entry's link for the claim.

Company profile

researched Aug 2026

Irregular, formerly known as Pattern Labs, describes itself as the first frontier security lab, with a stated mission of protecting the world as AI systems become more capable and sophisticated. It builds defenses through high-fidelity research platforms that simulate and monitor real-world AI security scenarios, aiming to identify emerging threats and vulnerabilities before models are publicly deployed.

The company's core work is running controlled simulations that expose advanced AI models to realistic threat scenarios, including antivirus evasion, mapping and analysis of system environments, and autonomous offensive cyber operations. It also assesses model resilience against targeted attacks and works on confidential AI inference and hardware-based isolation/verification mechanisms intended to protect data privacy and model weights. Outputs include evaluations used in model releases and frameworks such as SOLVE, a scoring system for a model's vulnerability-detection ability that is used within the industry.

Irregular publishes research on its website, including assessments of models against offensive security benchmarks and commentary on the direction of AI security. It was recruiting across AI research, cyber research, research and software engineering, security engineering, and technical policy as of the material reviewed.

Founding story

Irregular was founded in 2023 by Dan Lahav (CEO) and Omer Nevo (CTO). Lahav previously worked at LabPixies, a startup acquired by Google, and was an AI researcher at IBM, where he received the Outstanding Technical Achievement Award and published research including a cover feature in Nature. Nevo is a serial entrepreneur who served as a development manager at Google Research, leading AI projects such as wildfire detection models. The two met through competitive debate; Nevo is a world debate champion and Lahav holds the highest personal ranking in world championship history.

Business model

Irregular operates as a research-driven security lab rather than a seller of consumer-facing products, earning revenue from contracted evaluation and research work with AI developers and government bodies. It reports millions of dollars in annual revenue from clients including OpenAI and Anthropic, with research collaborations conducted directly alongside those labs.

Fees from contracted research, model evaluation and red-teaming engagements with AI labs and government clients.

Traction

Reported millions of dollars in annual revenue by September 2025, contracts with OpenAI, Anthropic and government clients, roughly 25 employees at the time of its funding announcement, and widespread citation of its evaluations and SOLVE framework across industry system cards and government use.

Latest developments

In September 2025 Irregular announced an $80 million round led by Sequoia Capital and Redpoint Ventures, reported at a $450 million valuation, and emerged from stealth under its new name. Funding is intended to support work on shaping global AI security standards and scaling research into commercially usable security capabilities. Its website lists publications dated August 2026, including an assessment of Kimi K3 against offensive security benchmarks and a post addressing recent incidents.

β–ΈFull profile β€” market position, technology, go-to-market, geography, history, risks & controversies

Market position

Positioned as the first dedicated frontier AI security lab. Its evaluations have been cited in security evaluations for Claude 3.7 Sonnet and OpenAI's o3, o4-mini and GPT-5 system cards, its SOLVE framework has been used by the UK government and Anthropic, and it has co-authored papers with Anthropic and RAND. Its website cites recognition including a 50 Most Promising Startups listing, an AI 50 Brink List and a #1 Most Promising Startup ranking.

Sources emphasize research-led positioning rather than tool vending, direct and ongoing access to unreleased frontier models for pre-release evaluation, adversarial simulation environments with AI on both attack and defense sides, and combined expertise spanning AI, cybersecurity and hardware-based isolation.

Technology

High-fidelity research platforms and complex simulated network environments in which AI acts as both attacker and defender, enabling intensive testing of a model before release. Testing covers antivirus evasion, environment mapping and analysis, and misuse potential in cyber operations. The company also works on confidential inference and hardware-based verification and isolation for protecting data and model weights, and developed the SOLVE framework for scoring model vulnerability-detection capability.

Go-to-market

Irregular has grown through direct partnerships with frontier AI labs, obtaining access to unreleased models for pre-deployment evaluation, and through published research and frameworks that are cited in model system cards and used by governments and other labs. Company statements indicate an intent to extend its research into security tools for businesses adopting AI.

Frontier AI developers and research labs, including OpenAI, Anthropic and Google DeepMind, as well as government bodies such as the UK government.

Geography

Israeli company headquartered in Tel Aviv, with most of its employees based in Israel; clients include US-based AI labs and the UK government.

History

Founded in 2023 as Pattern Labs, the company operated with a low public profile before emerging from stealth in September 2025 with $80 million in funding. Sequoia Capital lists it as partnered in 2025. By that point it had established evaluation relationships with leading AI developers and had rebranded to Irregular.

Risks & controversies

An August 2026 company publication titled "Addressing Recent Incidents: Ongoing Findings and Path Forward" is listed on the website, but the sources provide no detail on its content. Source reporting also contains conflicting data: one aggregator lists an employee range of 1001-5000 and a different investor list for the Series A than the primary press coverage, which reports about 25 employees and a Sequoia/Redpoint-led round.

Compiled by commissioned research from 8 cited public sources β€” announcements, filings, and press listed under research sources below.

Key figures

latest reported
EmployeesSep 202525 people
FoundedJan 20232023
HeadquartersJan 2025Tel Aviv, Israel
Total funding raisedSep 2025$80M
ValuationSep 2025$450M

Company-reported or press-reported figures, each dated to when it was claimed β€” not independently audited.

Timeline Β· 7

launches, deals, and filings
Aug 2026
Publication: Assessing Kimi K3 Against Offensive Security Benchmarks

Research publication listed on Irregular's website.

source β†—

Aug 2026
Publication: The End-State Fallacy: Where Is AI Security Headed?

Research publication listed on Irregular's website.

source β†—

Aug 2026
Publication: Addressing Recent Incidents: Ongoing Findings and Path Forward

Publication listed on Irregular's website.

source β†—

Jan 2026
Startup recognition listings

Irregular's About page cites recognition including "50 Most Promising Startups", "AI 50 Brink List" and "#1 Most Promising Startup".

source β†—

Sep 2025
Irregular raises $80M led by Sequoia Capital and Redpoint Ventures

Irregular announced $80 million in new funding led by Sequoia Capital and Redpoint Ventures, with participation from Swish Ventures and angel investors including Wiz CEO Assaf Rappaport and Eon CEO Ofir Ehrlich. A source close to the deal said the round valued the company at $450 million.

$80M source β†—

Sep 2025
Emergence from stealth and rebrand from Pattern Labs to Irregular

The company, formerly known as Pattern Labs, emerged from stealth under the name Irregular alongside its funding announcement.

source β†—

Jan 2025
Sequoia Capital partnership

Sequoia Capital lists Irregular as partnered in 2025, with partners Shaun Maguire and Dean Meyer.

source β†—

Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.

In the news

β–ΈResearch sources Β· 8

primary sources listed

8 public sources were cited for this profile; the first-party ones are listed here.

Frequently asked questions

What does Irregular do?
Irregular is an Israeli frontier AI security lab that stress-tests and evaluates advanced AI models for leading AI labs.
Who founded Irregular?
Irregular was founded by Omer Nevo, Dan Lahav in 2023.
Who are Irregular's investors?
Irregular's investors include Redpoint Ventures, Sequoia Capital, Swish Ventures.
How much funding has Irregular raised?
Irregular has disclosed $80M raised across 1 of its 3 known rounds.
Where is Irregular headquartered?
Irregular is headquartered in Tel Aviv, IL.