AI FILES / CASE STUDIES

Two High School Friends From Poland
Taught AI To Laugh — And Built An $11 Billion Company

This is the real story of Mati Staniszewski — a math graduate who quit a stable job at Palantir, teamed up with his childhood friend from Warsaw, and built ElevenLabs into an AI voice company used by employees at 60% of the Fortune 500.

Founder Mati
Staniszewski
Company ElevenLabs
CH. 01 Two Kids From Warsaw

Mati Staniszewski's Childhood: From A Small Polish Town To Warsaw

Mati Staniszewski was born in 1995, in a small town outside Warsaw, Poland. He later moved into the city itself to attend high school, enrolling at Copernicus Bilingual High School.

It was there that he met Piotr Dabkowski, a classmate born in December 1994, at the same school — known there as Mikołaj Kopernik High School. The two became close friends as teenagers, sharing a fascination with technology that neither of them yet knew would eventually turn into a multi-billion dollar company.

A friendship, tested by business As one profile of the company later put it, Mati and Piotr had known each other "forever," since their teenage years — the kind of tight bond that can make founding a company together either much easier, or much harder, than working with a stranger.
CH. 02 Math, Finance, And Palantir

Before ElevenLabs: Mati Staniszewski's Path Through BlackRock And Palantir

After high school, Staniszewski moved to London to study mathematics at Imperial College. While still a student, he got his first taste of building something from scratch, organizing Mathscon — a student-led math conference focused on making mathematics fun outside the usual university curriculum.

His early career took him through some of the world's most demanding employers: Opera Software, then BlackRock, where he joined the Portfolio Analytics Group and helped launch the Aladdin Wealth platform, and finally Palantir Technologies, working as a Deployment Strategist helping governments and large enterprises roll out new technology.

Piotr Dabkowski, meanwhile, followed his own rigorous path — studying engineering at Oxford, then earning a Master of Philosophy at Cambridge in 2017, where his thesis on AI-based image detection was published at NeurIPS, one of the most respected machine learning conferences in the world. He went on to work as a software engineer at Opera Software, Google, and Tessian.

CH. 03 Frustrated By Robotic Voices

The Bad Movie Dubbing That Sparked The Idea For ElevenLabs

The idea behind ElevenLabs didn't come from a grand strategic plan — it came from irritation. Staniszewski had long been frustrated by the poor quality of movie dubbing and voiceovers he'd grown up with in Poland, where foreign films are often dubbed by a small number of voice actors rather than fully re-cast.

Both Staniszewski and Dabkowski also shared a simpler complaint: they thought voice assistants like Siri and Alexa sounded obviously robotic, even years into their existence. While still holding down their day jobs — Mati at Palantir, Piotr at Google — the two began experimenting with AI voice technology as a weekend project.

CH. 04 Quitting Stable Jobs

Founding ElevenLabs: Mati Staniszewski And Piotr Dabkowski Quit Palantir And Google

In 2022, the weekend project became a real company. Staniszewski and Dabkowski pooled their personal savings, quit their jobs, and committed to ElevenLabs full-time. There were no fancy titles or org charts at first — but in practice, Staniszewski took on the CEO role, while Dabkowski led research and technology.

~15
people on the founding team, with no physical office
~6
months spent purely on research before building any customer-facing product

Rather than rushing a product to market, the earliest version of ElevenLabs operated almost like a research lab: a small, remote team trying to build genuinely human-sounding text-to-speech technology from first principles, instead of adapting older, more robotic-sounding systems.

CH. 05 The Moment It Clicked

The AI Voice That Started Adding "Umms" And Laughter On Its Own

Most people trying to build cleaner, more polished AI speech would consider hesitations, pauses, and stray sounds a bug to be removed. The ElevenLabs team read it completely differently.

"We started seeing some of those human elements being replicated." — Mati Staniszewski, describing the moment ElevenLabs' model began naturally reproducing pauses, hesitations, and laughter

When their early model began naturally reproducing the small imperfections of real human speech — including laughter — without being explicitly told to, the team took it as proof they were on the right track. Ironically, teaching an AI to sound a little less than perfect was exactly what made it sound convincingly real.

CH. 06 Launching With A Safety Net

ElevenLabs' 2023 Launch: A Voice Platform, With A Deepfake Detector Built In

In 2023, ElevenLabs launched Speech Synthesis, a simple web-based text-to-speech platform aimed at content creators making narrated videos and publishers wanting to turn written articles into audio. It quickly found an audience among people producing large volumes of spoken content without hiring voice actors for every project.

Aware of how easily realistic AI voice technology could be misused for scams or disinformation, ElevenLabs paired an early $19 million funding raise in June 2023 with the launch of a voice detection tool — designed to help identify AI-generated speech, including content made with its own technology.

CH. 07 The Funding Rocket Ship

ElevenLabs' Valuation: From Unicorn To $11 Billion In Two Years

ElevenLabs' growth in valuation has been extraordinarily fast, even by AI industry standards. In January 2024, the company raised an $80 million Series B round led by Andreessen Horowitz, officially making it a unicorn.

$1.1B
valuation at unicorn status, January 2024
$11B
valuation reached in February 2026, following a $500 million Series D

From there, the numbers kept climbing: past $3.3 billion in mid-2025, then $6.6 billion by October 2025, and finally to roughly $11 billion in February 2026 — a round backed in part by Nvidia, and reportedly raised with an eye toward a future IPO. Both Staniszewski and Dabkowski each retain an estimated 15% ownership stake in the company, making both of them billionaires on paper.

CH. 08 From Startup Curiosity To Fortune 500 Standard

ElevenLabs' Customers: The Atlantic, Washington Post, And 60% Of The Fortune 500

ElevenLabs' technology moved quickly from novelty to genuine enterprise infrastructure. The company struck partnerships with major publishers including The Atlantic and The Washington Post, along with large content producers like TheSoul Publishing, known for its "5-Minute Crafts" videos.

A viral demonstration of the technology's power Polish media coverage highlighted one particularly attention-grabbing stunt: using the technology to make actor Leonardo DiCaprio's voice sound like Kim Kardashian's — a vivid, slightly unsettling demonstration of just how convincingly the AI could clone and swap voices.

By 2025, employees at more than 60% of Fortune 500 companies were reportedly using ElevenLabs in some form, and users across the platform had collectively generated more than 100 years' worth of audio content since launch.

CH. 09 Beyond Voice

ElevenLabs In 2026: Music, Government Contracts, And $500M In Revenue

ElevenLabs has steadily expanded well beyond simple text-to-speech. The company launched Music v2 for AI-generated music and Dubbing v2 for improved multilingual video translation, and rolled out ElevenLabs for Government, reflecting rising demand from public-sector organizations for secure voice AI tools — including a partnership with the UK Government to bring voice AI into public services.

By May 2026, ElevenLabs announced it had surpassed $500 million in annual recurring revenue — a striking figure for a company founded just four years earlier by two friends experimenting with AI voice technology on weekends, without a physical office or a large founding team.

CH. 10 The Story, Year By Year

Mati Staniszewski And ElevenLabs: The Full Timeline, Year By Year

1994–1995 Mati Staniszewski and Piotr Dabkowski are both born in Poland; they later meet at Copernicus Bilingual High School in Warsaw.
Higher education Staniszewski studies mathematics at Imperial College London; Dabkowski studies engineering at Oxford and earns an MPhil at Cambridge, publishing at NeurIPS.
Early careers Staniszewski works at Opera Software, BlackRock, and Palantir; Dabkowski works at Opera Software, Google, and Tessian.
2022 The two quit their jobs, pool their savings, and co-found ElevenLabs, starting with a lean, roughly 15-person team and no physical office.
2023 Launches Speech Synthesis publicly; raises a $19 million round alongside a voice deepfake detection tool.
January 2024 Raises an $80 million Series B led by Andreessen Horowitz, reaching unicorn status at a $1.1 billion valuation.
Mid–late 2025 Valuation climbs from roughly $3.3 billion to $6.6 billion as ElevenLabs becomes one of Europe's most valuable AI startups.
August 2025 Announces a partnership with the UK Government to bring voice AI into public services.
February 2026 Raises a $500 million Series D, reaching an $11 billion valuation with backing that includes Nvidia.
May 2026 Surpasses $500 million in annual recurring revenue.
CH. 11 What Any Founder Can Learn

Five Business Lessons From Mati Staniszewski And The ElevenLabs Story

FAQ Common Questions About Mati Staniszewski And ElevenLabs

Frequently Asked Questions About Mati Staniszewski And ElevenLabs

Who is Mati Staniszewski? Mati Staniszewski is the co-founder and CEO of ElevenLabs, an AI voice generation company. He was born in Poland, studied mathematics at Imperial College London, and previously worked at BlackRock and Palantir before co-founding ElevenLabs in 2022 with his high school friend Piotr Dabkowski.
What is ElevenLabs' valuation? ElevenLabs was valued at approximately $11 billion following a $500 million Series D funding round in February 2026, up from roughly $1.1 billion when it first became a unicorn in early 2024.
Who founded ElevenLabs? ElevenLabs was founded in 2022 by Mati Staniszewski and Piotr Dabkowski, two Polish friends who met at Copernicus Bilingual High School in Warsaw. Staniszewski serves as CEO and Dabkowski leads research and technology.
Why did the founders start ElevenLabs? Mati Staniszewski was frustrated by the poor quality of movie dubbing and voiceovers in Poland, and both founders felt that voice assistants like Siri and Alexa sounded obviously robotic. They set out to build AI voice technology that sounded genuinely human.
How much revenue does ElevenLabs make? ElevenLabs surpassed $500 million in annual recurring revenue (ARR) by May 2026, with its technology used by employees at more than 60% of Fortune 500 companies.
SOURCES Verified reporting used for this case study

Where These Facts Come From

This case study is built from public reporting and primary sources. We encourage you to read the original coverage below.

A note on accuracy: Some sources report slightly different figures and dates for ElevenLabs' valuation milestones between late 2025 and early 2026; we've used the sequence most consistently corroborated across sources. Please verify current numbers directly with ElevenLabs' official channels before quoting them elsewhere. One source link (CNBC) points to the outlet's homepage with a suggested search, since a direct, verified article URL wasn't available in our research — please locate and confirm the exact article before publishing.