Back to Investors
Y Combinator

Y Combinator

Accelerator

Y Combinator is an accelerator for promising, fast-growth startups.

Portfolio

21

companies


Portfolio companies

Throxy

Throxy

Throxy provides a managed outbound sales service for companies selling into traditional industries.

F

Flagright

Flagright provides an artificial intelligence native compliance and anti-money laundering operating system for financial institutions.

R

Reactwise

Reactwise develops artificial intelligence software and robotic laboratories to accelerate pharmaceutical research and manufacturing.

Encord

Encord

Encord provides an AI data development platform for advanced vision and multimodal teams.

Unify

Unify

Unify offers a single interface to test and deploy large language models across various providers.

nsave

nsave

Fintech platform providing secure financial accounts for people in distressed economies.

Devyce

Devyce

Devyce supplies digital business phone numbers for international workforces.

Tranch

Tranch

Tranch provides flexible payment solutions for business to business invoices and software subscriptions.

Oto

Oto

Oto provides a mobile app and digital therapy solution for managing tinnitus.

LD

Let's Do This

An online platform for discovering and booking endurance sports events globally.

T

Tenyks

Tenyks builds software that helps machine learning engineers improve computer vision models.

E

Easol

Easol provides an all-in-one commerce platform for experience creators and travel businesses.

SB

Sixfold Bioscience

Sixfold Bioscience develops programmable delivery systems for RNA therapeutics.

zeroheight

zeroheight

Zeroheight builds a DesignOps platform for documenting UX and accelerating delivery.

AO

Alba Orbital

Alba Orbital develops small satellites to image the Earth at frequent intervals.

H

Humaans

Humaans provides modular human resource software for modern workplaces.

S

Stacker

Stacker builds a no-code platform that enables non-technical teams to create custom software applications.

QuestDB

QuestDB

QuestDB builds an open source time series database with speed top of mind.

M

Monzo

Monzo provides digital banking services through a mobile application.

H

Headstart

Diversity recruiting software that removes bias and matches candidates using data science.

C

Clara

Clara simplifies legal procedures for startups through a hybrid software and legal services platform.


Team

AH

Anu Hariharan

Continuity partner

MA

Marc Andreessen


Recent investments

Seed
£4.6M

The London and San Francisco startup raised the seed capital from Base10 Partners and Y Combinator to expand its headcount.

"Outbound sales has stagnated over the past decade, with rapidly diminishing returns. Likewise, generic automation tools – even those promising the wizardry of AI – aren’t penetrating traditional industries because they don’t know how to find relevant prospects, let alone target them effectively."
— Pablo Jiménez de Parga Ramos, Co-founder
Seed
£3.2M

The seed round was led by Frontline Ventures and will support the expansion of artificial intelligence compliance workflows.

"We were really early-stage when the boom in AI came into effect, meaning we could implement AI-native solutions from the very start, something that more established companies running on legacy architecture have found challenging. It is true that bad actors in financial crime are finding new ways of using AI all the time, which is what makes the work Flagright is doing so important. This funding will allow us to further develop our AI agents that will allow financial companies to stay one step ahead."
— Baran Ozkan, Co-founder
Pre-Seed
£2.6M

The pre-seed round was backed by participants including Y Combinator and the UK government.

"The discovery of novel pharmaceuticals is one of our most important weapons in fighting disease. However, the drug development pipeline is often driven by trial-and-error and held up for many months during the identification of scalable manufacturing processes, delaying clinical trials. Our AI-powered models learn from historical data, cutting up to 95% of experimental work and accelerating these workflows by 30x."
— Alexander Pomberger, CEO and Co-Founder
Series B
£23.4M

The Series B round was led by Next47 with participation from Y Combinator, CRV, and Crane Venture Partners.

"In 10 years, every company will have an AI department in the same way that they have an IT department today or risk losing relevance, and Encord will be the only platform they need to accomplish the process of turning data into functional AI models,"
— Ulrik Stig Hansen, Co-Founder and President
Seed
£3.2M

The seed round was co-led by Sequoia Capital and TQ Ventures to support infrastructure expansion and beta scaling.

"The reality is that if you come from a distressed country, the global banking system will discriminate against you and label you as a “high risk client” and in most cases refuse to serve you simply because of where you come from. I have seen the impact of that unfair exclusion myself, and my loved ones have suffered because of this. We had to do something and innovate a better and more inclusive way of risk assessment in order for us to serve the people who desperately need access to safe financial service while making sure we comply with regulations."
— Amer Baroudi, Co-founder
Seed
£2.2M

The seed round was led by Y Combinator alongside Garage Capital and FoundersX Ventures.

"Businesses are continually up against it to find cost efficiencies, while creating more hybrid working environments for their people. Mobile devices, whether used for calls, messages or video meetings, are an essential tool for doing business. Devyce makes it easier and cheaper for companies to help their people make best use of the devices they already have at their disposal, wherever they are located."
— Nick Browne, Co-Founder
Seed
£81.1M

The seed financing was led by Soma Capital and FoundersX with additional backing from Clear Haven Capital Management.

"Since securing our pre-seed funding and completing the Y Combinator programme, the total value of invoices we’re handling every month has increased tenfold. Traction is growing fast because suppliers and business buyers alike simply understand and like what Tranch can do for them. Against this challenging macroeconomic backdrop, buyers and suppliers have to ensure they can optimise their working capital cycle, and B2B BNPL is a commonsense way to achieve that. With our new investors and substantial credit facility in place, we’re in a great position to continue our growth in the US market out of our New York office so that every SMB that needs it can ‘pay with Tranch’ – flexibly and on their own terms."
— Philip Kelvin, Co-founder & CEO
Seed
£2.8M

The oversubscribed seed round was led by Octopus Ventures with backing from Goodwater Capital, Y Combinator, Calm Storm Ventures and Bethnal Green Ventures.

"Tinnitus currently affects around 50 million people in the US and UK, of which 20 million have intrusive tinnitus, a condition that can severely impact an individual’s life. For many this is a condition that they have little choice but to ‘learn to live with’. The Oto team, however, refuse to habituate and instead are providing a 10x cheaper and more convenient way to help people manage their condition. Though they probably don’t complain, we all know someone who suffers from tinnitus and have seen the effects it can have on an individual’s life. This is one of the reasons we wanted to support George, Ed and the entire Oto team as they tackle the market and provide an innovative digital solution to a long overlooked issue"
— Kamran Adle, Investor
Seed
£3.5M

The funding round was led by Flash Ventures and Global Founders Capital, with participation from Y Combinator and Columbia Lake Partners.

"B2B BNPL players so far have been largely focused on B2B e-commerce where ticket sizes are small and lenders rely on standard credit data to make limited credit decisions. We’re excited to see Tranch making B2B BNPL accessible to more complex lending demands involving larger volumes and longer durations, all of which creates a hugely scalable international market opportunity through their full lending tech stack."
— Yash Zaveri, Partner & MD
Seed
£2.5M

The financing round was co-led by Speedinvest and firstminute capital to help double the startup engineering team.

"In one case, a machine learning engineer used Tenyks to identify the root causes of 80% of their algorithm’s failures. These findings helped them deliver higher quality results to their customers because of the significantly improved system performance. Moreover, future new deployments can be onboarded in half the time because the engineers can now focus their efforts on alleviating the key bottlenecks,"
— Botty Dimanov, CEO
Pre-Seed
£510K

The UK digital health startup has closed its pre-seed raise with backing from Y Combinator and multiple angel investors.

"It is a huge achievement for us to be accepted onto Y Combinator and we’re incredibly excited to be a part of such a prestigious global movement that has an unparalleled track record for success. I know personally just how debilitating tinnitus can be and so as a team, we’re looking forward to learning from the very best innovators and entrepreneurs as we explore new ways to accelerate our growth and make a difference in the lives of as many people living with tinnitus as possible. Coupled with our pre-seed investment round, 2022 is shaping up to be a truly formidable year for Oto and for the tinnitus community."
— Edmund Farrar, Co-founder
Seed
£7.8M

The London-based biotechnology firm raised the capital from backers including Cantos Ventures and Y Combinator.

"The global pandemic has catapulted RNA therapeutics into the mainstream, yet the field is constrained to targeting the liver. Sixfold’s iterative platform technology and use of machine learning will unlock the power of mRNA and RNAi for many diseases across various tissue types. We are delighted to support the Company in this seed round and look forward to their rapid progress over the coming years."
— Ian Rountree, Founder and General Partner
Seed
£2.4M

The seed round was led by Metaplanet Holdings with backing from several institutional investors and angels.

"We are thrilled to have closed our first external investment round, which was so popular we could have filled 2 or 3 times over. We are excited to kick on and start building out our fleet at scale, starting with our 11 satellite constellation for night time imagery"
— Tom Walkinshaw, Founder and CEO
Seed
£3.3M

Notion Capital led the seed investment, which will accelerate product development.

"We believe the Easol team has developed an incredible solution which has become the go-to platform for the world’s best experience creators who are passionate about the experience they deliver every day and not just selling things. Ben’s and Lisa’s deep domain expertise has already translated into rapid commercial growth with high demand that this round will support with more resources in product, marketing, sales and increasing the company’s global footprint. It’s rare for a company at their stage to have such strong signs of product-market fit. In fact, their SaaS metrics are some of the best we’ve ever seen."
— Chris Tottman, Partner
Seed
£1.2M

The round was led by Initialized Capital to support expansion of the company product and engineering teams.

"We’re really excited to be partnering with Stacker. There’s a lot of buzz in the no-code space right now, but very few of these products are actually used in real businesses.What’s so compelling about Stacker is that they’ve worked out how to let people with no technical experience actually create software that helps them in their work."
— Garry Tan, Founder and Managing Partner
Seed
£1.8M

The Y Combinator alumni have raised £1.8m from Episode 1, Seedcamp, 7percent Ventures, Y Combinator, and Kima Ventures.

"We’re building an open source database for time series data, and time series databases are a multi-billion-dollar market because they’re central for financial services, IoT and other enterprise applications. And we basically make it easy to handle explosive amounts of data, and to reduce infrastructure costs massively,"
— Nicolas Hourcard, CEO
Seed
£5.4M

The investment round was led by FoundersX with participation from Founders Factory, Y Combinator, and Plug and Play Ventures.

"This is a massive achievement for us. When we came to market 2 years ago we were probably the only technology company talking about fairness and diversity. Fairness has been our core purpose from day one, it’s in our DNA, and we are so grateful to our investors and clients who saw how important our message was. For me this represents an investment in diversity, not just our company. This latest round will allow us to grow our capability in our core markets, levelling the playing field and breaking the cycle of exclusion that still chronically prevalent in the world of work. It is also a huge vote of confidence in the team who have worked so hard over the past 2 years to bring our purpose to life."
— Gareth Jones, CEO
Seed
£1.6M

The seed round was backed by Techstars, 500 Startups, and multiple UAE-based investors to fund product development and international expansion.

"The challenges associated with startup law globally require a unique blend of legal and technological expertise. Our world-class team of lawyers and technologists will create a new customer experience for startup law, which will empower founders, de-risk investors and provide massive savings on legal fees."
— Patrick Rogers, Co-Founder and CEO