Compare / Klarna vs Liquid AI
AT A GLANCE
FUNDING HISTORY
Klarna
Liquid AI
BUSINESS MODEL
Klarna
Klarna makes money from merchant fees and consumer interest. Merchants pay Klarna 3-6% of each transaction — they're willing to pay because Klarna increases conversion rates by 30%+ and average order values by 45%.
On "Pay in 4" (interest-free installments), Klarna makes money purely from merchant fees. On longer financing (6-36 months), Klarna charges consumers interest up to 25% APR.
Klarna also earns revenue from its shopping app (affiliate commissions when users discover and buy from merchants), and from its Klarna Card.
Liquid AI
Liquid AI builds foundation models, the big general-purpose brains that power chatbots and other AI tools. The difference is efficiency.
Their models, called Liquid Foundation Models, are designed to do more with far less memory and computing power. Companies pay to use them, either through a cloud API or by running the models on their own machines.
That second option matters. A bank or a hospital often cannot send private data to someone else's server.
Liquid AI lets them keep the model in-house. The pitch to a customer is basically this.
You get strong AI without renting a mountain of expensive chips.
HOW THEY STARTED
Klarna
Sebastian Siemiatkowski, Niklas Adalberth, and Victor Jacobsson were students at the Stockholm School of Economics. In 2005, they entered a startup competition with an idea: let people buy things online and pay later.
At the time, online shopping was still new and most people were terrified of entering their credit card details on the internet. The idea was simple — Klarna would pay the merchant immediately, and the customer would get an invoice with 14-30 days to pay.
The competition judges hated it. The idea was dismissed as financially irresponsible and the team didn't win.
But Siemiatkowski pressed on. Swedish e-commerce was growing fast and merchants were desperate for any way to reduce cart abandonment.
Klarna's "pay after delivery" model was a hit because it shifted the risk — customers could receive the product, try it on, and only pay for what they kept.
The first customers were Swedish e-commerce merchants selling fashion and home goods. Klarna handled the invoicing, fraud detection, and collections.
Merchants saw conversion rates jump because customers were more willing to buy when they didn't have to pay immediately.
Liquid AI
Liquid AI is a spinout from MIT's Computer Science and Artificial Intelligence Laboratory, better known as CSAIL. The core science came from Ramin Hasani, who spent his PhD studying the nervous system of a tiny worm called C.
elegans. That worm has just 302 neurons and still manages to move, hunt, and react to its world.
Hasani and his collaborators asked a simple question. What if you built an AI that worked more like those neurons and less like a giant static network?
The answer was the liquid neural network, a model whose internal wiring keeps adjusting even after training is done. The team incorporated the company in 2023.
Daniela Rus, who runs CSAIL and is one of the most respected robotics researchers alive, came on as a co-founder. So did Mathias Lechner and Alexander Amini, both longtime research partners of Hasani.
HOW THEY GREW
Klarna
Klarna grew by being embedded at checkout. The strategy was to sign up the biggest online retailers and become a payment option alongside Visa and PayPal.
Once Klarna was at checkout, consumers discovered it organically. The "Pay in 4" button became ubiquitous across fashion, electronics, and home goods retailers.
The Klarna app became a growth engine beyond checkout. By building a shopping app where users could browse products, discover deals, and track deliveries, Klarna turned from a payment method into a shopping destination.
The app has 35+ million monthly active users who start their shopping journey inside Klarna before even visiting a retailer.
International expansion was aggressive. Starting in Sweden, Klarna rolled out across Europe, then into the US, UK, and Australia.
The US became the biggest growth market — American consumers were especially receptive to Pay in 4 as an alternative to credit cards. By 2023, Klarna had 34 million US users.
Liquid AI
The growth angle is size, or the lack of it. Most frontier models are so heavy they only run in data centers.
Liquid AI aims for models light enough to run on a phone, a car, or a factory robot. That opens doors the giants cannot easily reach.
The AMD partnership pushes the same idea. AMD makes chips, and it wants efficient models that show off its hardware.
So AMD led the Series A and became both an investor and a distribution partner. Liquid AI also releases open models to researchers, which builds a following before the sales team ever makes a call.
THE HARD PART
Klarna
The valuation collapse was humiliating. Klarna raised at a $46 billion valuation from SoftBank in 2021.
One year later, they raised a down round at $6.7 billion — an 85% haircut. It was the most dramatic valuation drop in fintech history.
Employee stock options were underwater. Siemiatkowski had to lay off 10% of the workforce.
The entire BNPL category went from hot to radioactive in months.
Credit losses are the existential risk. Klarna is lending money to consumers who want to buy things they can't afford to pay for right now.
When the economy slows, defaults rise. Klarna's credit losses ran to roughly $600 million in 2022.
The company had to tighten underwriting significantly and pull back from riskier markets. The tension between growth (approve more loans) and profitability (reject risky borrowers) defines every quarter.
The IPO in 2025 was a comeback story but with caveats. Klarna went public at $15 billion — a major recovery from the $6.7 billion trough but still less than a third of its 2021 peak.
The company finally turned profitable by slashing costs with AI (replacing hundreds of customer service agents with AI chatbots) and tightening credit standards. But investors remain cautious about the BNPL model's long-term sustainability.
Liquid AI
The honest problem is Goliath. OpenAI, Google, Anthropic, and Meta have raised tens of billions of dollars between them.
Liquid AI has raised under $300 million. The transformer architecture those giants use is battle-tested and improving fast.
Liquid AI has to prove its different approach not only works but keeps working as models get bigger. Betting against the most successful design in AI history is bold.
It is also the kind of bet that ends in either a great acquisition or a quiet shutdown, with not much room in between.
THE PRODUCTS
Klarna
Pay in 4 is the signature product — split any purchase into four interest-free payments over six weeks. Pay in 30 lets customers receive the product first and pay within 30 days.
Financing offers longer-term payment plans with interest for larger purchases. The Klarna App is a shopping destination — browse deals, track orders, manage payments, and earn cashback.
The Klarna Card is a physical Visa card that lets users Pay in 4 anywhere. Klarna Creator is a platform for influencers to earn commissions sharing products.
Klarna AI is their customer service chatbot that handles two-thirds of support queries.
Liquid AI
The main products are the Liquid Foundation Models, a family that ships in several sizes so a customer can pick the smallest one that does the job. The second generation, LFM2, arrived in 2025, including LFM2-VL vision-language models built for phones, laptops, wearables and embedded chips.
The company has leaned hard into on-device AI rather than the cloud. The focus is always the same.
Match the quality of a much larger model while using a fraction of the memory and power.
WHO BACKED THEM
Klarna
Sequoia Capital, SoftBank, Silver Lake, GIC, Atomico, Commonwealth Bank of Australia, Heartland
Liquid AI
It started with a $37.5 million two-stage seed in December 2023 at a $303 million valuation, from OSS Capital, PagsGroup, Automattic (the company behind WordPress), Samsung Next and others. Angels included GitHub co-founder Tom Preston-Werner, Shopify's Tobi Lütke and Red Hat co-founder Bob Young.
Then AMD Ventures led the $250 million Series A in December 2024, which is unusual because AMD is a chipmaker, not a typical venture fund. That backing gave Liquid AI both money and a hardware ally.
When a major chip company writes the lead check on an efficiency-focused model maker, it signals a bet that the future of AI is not just bigger, it is leaner.