Summary

ElevenLabs, a voice AI startup co-founded by 31-year-old Polish-born Mati Staniszewski (Mateusz "Mati" Staniszewski), reached a valuation of $11 billion (approximately ¥1.705 trillion) in February 2026 through a $500 million (approximately ¥77.5 billion) Series D round led by Sequoia Capital. In May of the same year, its ARR surpassed $500 million (approximately ¥77.5 billion), with BlackRock, NVIDIA, and Jamie Foxx joining as additional investors. This article examines from multiple angles the product's origins, which began with frustrations over dubbing in Warsaw, the trajectory of the founder through Imperial College, BlackRock, and Palantir, and why Silicon Valley VCs have come to hold such strong conviction that "voice is the next interface for AI."

From Warsaw to Imperial College — The Original Landscape of a Math Prodigy

Mateusz "Mati" Staniszewski was born in 1995 near Warsaw, Poland. Through his secondary education he relocated into the city of Warsaw to commute to school, completing his studies at Copernicus Bilingual High School (Mikołaj Kopernik Bilingual High School), known as one of the top college-preparatory schools in Poland. It was at this school that he met Piotr Dąbkowski (born December 1994), who would later co-found ElevenLabs with him. As Staniszewski himself has recounted in multiple interviews in later years, the two had bonded since their teenage years over lamenting "the poor quality of Polish dubbing of Hollywood films," and their discomfort with the audio experience in which a single one-man narrator (the lektor format peculiar to Poland) reads out all the characters' lines in a flat tone lies at the deepest core of the startup idea they would conceive years later.

Having moved to the United Kingdom, Staniszewski studied mathematics at Imperial College London, earning his bachelor's degree in 2017. While at Imperial, he launched a student-led mathematics conference called "Mathscon," and through running an event focused on the "fun side" of mathematics, he gained firsthand experience in operations, fundraising, and recruiting speakers. Multiple outlets including Forbes and Sifted have reported that this was his "first entrepreneurial practice" and a foreshadowing of the executive persona he would later embody at ElevenLabs — including the famous anecdote that in the founding period he personally ran recruitment interviews with more than 1,700 applicants. Reminiscences by his classmates and friends from that cohort describe Staniszewski not so much as a "conspicuously brilliant student" but rather as "a practitioner type who, while observing courtesy, persistently pushes through toward his objectives," and he was known within the Polish community as a reserved but inwardly resolute figure.

BlackRock and Palantir — Two Apprenticeships Before Founding

After graduating from Imperial College, Staniszewski briefly worked at Opera Software before joining the Portfolio Analytics Group (PAG) at the UK's BlackRock. During his 14-month tenure, he was involved in the launch of "Aladdin Wealth," a wealth management platform for high-net-worth individuals, where he was responsible for modeling structured products. A related article on eFinancialCareers reports that he is spoken of as a role model in European financial circles as "a former junior analyst at BlackRock who, at just 30 years old, built an AI company valued at over 1 billion dollars (approximately 155 billion yen)."

Subsequently, Staniszewski moved to Palantir Technologies as a Deployment Strategist, where he stayed for just under four years. Palantir's deployment role is a hands-on position that brings Foundry/Gotham into the field at government agencies and large enterprises, handling everything from data integration to workflow redesign end-to-end. Before founding his company, Staniszewski accumulated experience negotiating directly with on-the-ground decision-makers, primarily on European, Middle Eastern, and public-sector projects. Forbes analyzes that his preferred operational philosophy in later years—"sticking close to customers in an FDE manner," which is directly reflected in the design philosophy of ElevenLabs' Forward Deployed Engineering unit and enterprise customer success team—stems from the DNA of his Palantir era.

Meanwhile, co-founder Piotr Dąbkowski graduated from the Department of Computer Science at Oxford University, obtained a master's degree from Cambridge University, and worked for several years at Google as a research/machine learning engineer. The two launched ElevenLabs as a UK corporation in May 2022 with a complementary lineup: Staniszewski, with his strengths on the business/operations side, and Dąbkowski, with deep research expertise in deep learning and speech synthesis.

The Birth of ElevenLabs — From Frustration with Subtitle Translation to the Global Standard in Voice AI

ElevenLabs, from its very founding charter, started not as a so-called "AI application startup" but as a "research-first lab." As Jennifer Li, General Partner at Andreessen Horowitz, argues in the a16z blog post "Where you build is who you are: the ElevenLabs story," locating its principal bases in London, Warsaw, and New York—"outside the US West Coast"—was a deliberate choice intended to embed in the organization's DNA the sensibilities of non-English speakers who face multilingual environments. Jennifer Li describes ElevenLabs as "one of the most rapidly scaling AI companies we have ever invested in," praising the warmth of a product rooted in frustration as its starting point.

Technically, with deep-learning-based speech synthesis models (the Eleven Multilingual / Eleven v3 / Flash series) built in-house from the ground up at its core, ElevenLabs has lined up an end-to-end suite spanning text-to-speech (TTS), voice cloning, speech-to-speech conversion (STS), Conversational AI / ElevenAgents, Scribe for transcription, and ElevenMusic—released generally on iOS in April 2026—earning the assessment that it has "built the only stack offering Voice / Music / SFX through a single API and a single subscription" (Music Business Worldwide). Variety and Billboard position "The Eleven Album," announced alongside ElevenMusic and featuring legendary artists such as Liza Minnelli and Art Garfunkel and released through partnerships with industry labels, as a differentiator from Suno and Udio.

Series D — $500 million at an $11 billion valuation

On February 4, 2026, ElevenLabs announced a $500 million (approximately ¥77.5 billion) Series D round, revealing that its post-money valuation had reached $11 billion (approximately ¥1.705 trillion). The round was led by Sequoia Capital, with Andrew Reed, a partner in the growth division, joining the board. At the same time, among existing investors, a16z quadrupled its investment and Iconiq tripled its commitment, while the existing lineup of BroadLight, NFDG, Valor Capital, AMP Coalition, and Smash Capital was joined by new participants including Lightspeed Venture Partners, Evantic Capital, and Bond Capital. TechCrunch emphasizes that the $11 billion valuation represents more than triple that of the Series C round in January 2025 (valued at $3.3 billion, co-led by ICONIQ Growth and a16z, with $180 million raised = approximately ¥27.9 billion).

Over the subsequent three months, the investor lineup expanded further. According to reports by Bloomberg and TechCrunch on May 5, 2026, the Series D follow-on added major institutional investors such as BlackRock, Wellington, D.E. Shaw, and Schroders; corporate investors including NVIDIA, Salesforce Ventures, Santander, KPN, and Deutsche Telekom; and celebrity investors such as Jamie Foxx, Eva Longoria, and Hwang Dong-hyuk, the creator of "Squid Game." Tech.eu reports that this increased the final equity amount of the Series D beyond the initially announced figure, bringing the cumulative amount raised to over $781 million (approximately ¥121 billion).

It should be noted that neither ElevenLabs nor the various media outlets have disclosed the participation allocations or individual investment amounts of these follow-on investors, and this article likewise does not delve into the breakdown. However, attention should be paid to the three-tier structure of institutional investors, strategic corporate investors, and celebrities, which Bloomberg, citing sources familiar with the matter, has positioned as "groundwork for IPO preparations."

A Silicon Valley VC's Perspective — "Voice is the Next OS for AI"

Behind the concentrated investment by major Silicon Valley VCs in ElevenLabs lies a shared thesis: the conviction that "not text, not screens, but voice will occupy the core of the next-generation AI interface."

In its own blog post "Tripling Down on ElevenLabs," ICONIQ Growth—jointly bylined by General Partner Seth Pierrepont, Partner Ritika Pai, and Investor Anna Textor—positions the vision that Mati and Piotr have championed from the beginning, namely that "voice, as the most human form of communication, will be the bridge between people and intelligent systems," as having been realized. The firm appraises ElevenLabs as a company that has "redefined voice and the very way voice is created," and describes its three successive follow-on investments across Series B, C, and D as "a textbook example of a conviction bet."

Sequoia Capital's Andrew Reed, on the occasion of the Series D announcement, commented that "Mati and Piotr are exceptional founders and leaders. They have grown ElevenLabs into one of the most successful and most influential companies in the global AI ecosystem," emphasizing the rarity of simultaneously scaling world-class research, tools that unleash creativity, and enterprise voice agents within a single organization. Sequoia's growth arm has been known in recent years for its concentrated investments in LLM-related mega-unicorns such as OpenAI, Anysphere, and Glean, but Andrew Reed has chosen voice as the firm's "next modality layer to lock down," effectively casting ElevenLabs in the lead role.

From the a16z side, Jennifer Li, in "Where you build is who you are," analyzes that "the very fact of being headquartered in Europe shapes the organizational culture," and argues as a competitive advantage the presence of founders who know, in a visceral way, the poverty of authentic voice experiences in non-English-language regions. Since a16z joined at a near-seed-stage Series A round (June 2023, $19 million ≈ ¥2.9 billion), it co-led the $80 million (≈ ¥12.4 billion) Series B round and increased its allocation in Series C and D as well; on a PitchBook-based calculation, the firm's standalone cumulative exposure is believed to exceed the $100 million (≈ ¥15.5 billion) mark.

The fact that Lightspeed Venture Partners and Bond Capital (the growth-stage VC led by Mary Meeker) joined anew from Series D has been reported by The SaaS News and Dataconomy as a symbolic move signaling that ElevenLabs has been elevated to the "IPO candidate list" among Silicon Valley's classic growth investors. Mary Meeker, in her own "Trends" reports, has in recent years analyzed the diffusion curve of generative AI alongside the dawn of the internet, and Bond's bet on ElevenLabs can also be interpreted as an official endorsement of the view that "the voice interface will become an infrastructure layer comparable to the dawn of the commercial internet."

Looking at it from the corporate venture capital (CVC) side, NVIDIA in February 2026 jointly with Google Cloud announced a multi-year contract with ElevenLabs, planning to underpin the training and inference of voice models on G4 virtual machines equipped with Blackwell-generation RTX PRO 6000 GPUs. This is less a mere investment than a vertically integrated alliance spanning the semiconductor, cloud, and model layers—tantamount to Silicon Valley's infrastructure layer certifying ElevenLabs as its "official voice inference partner." The corporate investments from Salesforce Ventures, Deutsche Telekom, Santander, KPN, and others have a distinctly strategic flavor, each premised on embedding ElevenAgents into their own customer touchpoints (CRM, telecommunications, banking), differing in character from the investment logic of independent VCs.

There are also points the Silicon Valley investor community is wary of. Industry analyses from MVP Capital and Sacra, as well as PitchBook reports, all point to the fact that "competitive commoditization pressure is intensifying by the day, with Suno (music generation), Cartesia, Hume, PlayHT, and Voxtral TTS, which Mistral released as open source." In fact, Mistral's Voxtral TTS captured a 62.8% preference rate against ElevenLabs Flash v2.5 in a March 2026 blind test, which means that "world-class models have become implementable even with open weights." Sequoia's and a16z's latest increases in allocation are also a bet on whether ElevenLabs can evolve into a "vertical stack bundling agents, music, and creative—not a single model" at a pace exceeding these commoditization risks.

ARR and Customer Base — Surpassing $500 Million

ElevenLabs' performance trajectory is exceptionally steep even when compared to past SaaS unicorns of Silicon Valley. As of the end of 2025, its ARR stood at approximately $330 million (about ¥51.2 billion), a figure Mati himself acknowledged to TechCrunch in January 2026. According to SaaStr's analysis, the time required to reach this level from zero ARR was 24 months, an overwhelmingly fast pace compared to the 8 years it took Twilio to reach the same level. The CEO himself disclosed in a CNBC interview that in Q1 2026, $100 million (about ¥15.5 billion) in net new ARR was added, bringing the ARR at the end of the quarter to approximately $450 million (about ¥69.8 billion). Furthermore, as of May 2026, it surpassed the $500 million (about ¥77.5 billion) milestone, and it has been reported that the revenue structure has flipped from being consumer-led to enterprise-led, with enterprise accounting for 51% of company-wide revenue.

The customer base has rapidly diversified from the initial creator segment (audiobooks, podcasts, YouTube). In the enterprise business, the lineup includes voice provision to Cisco's Webex AI Agent, TTS/STT integration into IBM watsonx Orchestrate, deployment to major players in the creative/gaming industries such as Adobe and Epic Games, as well as customers such as media outlets like the Washington Post and TIME, publishers like HarperCollins, and further Deutsche Telekom, Square, Revolut, and the Ukrainian government. The fact that India's massive e-commerce platform Meesho is leveraging ElevenAgents to build a conversational shopping experience is a representative success story that Mati himself has repeatedly referenced in his Pigment Podcast interview.

ElevenMusic and New Ventures — From Voice to the Entire World of "Sound"

ElevenMusic, released on iOS on April 1, 2026, is positioned as a rival to Suno and Udio. According to reports by Music Business Worldwide and Music Ally, ElevenMusic is not merely a music generation tool but aspires to be a "listenable and remixable social music service" with a feed. Users can generate up to seven songs per day via natural language prompts, and the service offers a feature for remixing others' songs through text, as well as a feed for enjoying tracks from approximately 4,000 human artists. Furthermore, the strategy of releasing "The Eleven Album"—featuring legendary artists such as Liza Minnelli and Art Garfunkel—through industry labels can be seen as a clear "partnering with rights holders" approach, in contrast to the context in which Suno is being sued in copyright litigation. PYMNTS commented at the same time that "while Taylor Swift's camp is intensifying legal action against AI music generation platforms, ElevenLabs has deliberately taken up a stance aligned with rights holders."

Across the entire business portfolio, Mati has repeatedly stated at venues such as CNBC, London Tech Week, and the Pigment Podcast that "our mission is not confined to voice. It lies in redefining the generation and understanding of every kind of 'sound,' including text, voice, music, and sound effects," explicitly setting out a strategy with four pillars: ElevenAgents (conversational agent platform), ElevenCreative (creator-oriented studio), Scribe (high-accuracy speech recognition), and ElevenMusic.

Deepfake Regulation and Governance —— The Greatest Risk Looming Behind Rapid Growth

In parallel with its rapid growth, ElevenLabs has also come under intense scrutiny from regulators. During the 2024 U.S. presidential election cycle, several incidents were reported in which the company's voice synthesis technology was used in robocalls (automated voice calls) involving unauthorized cloning, further escalating the regulatory debate within the United States. On April 16, 2026, Senator Maggie Hassan (Democrat, New Hampshire), the ranking member of the U.S. Senate Joint Economic Committee, sent an open letter addressed to the CEOs of four companies—ElevenLabs, LOVO, Speechify, and VEED—requesting responses regarding their detection systems for fraudulent voice cloning, procedures for verifying consent, safeguards for public figures and minors, the implementation status of audio watermarking, log retention, and protocols for reporting to law enforcement. The figures cited at the opening of the letter were the $893 million (approximately ¥138.4 billion) in AI voice fraud damages reported by the FBI, as well as private-sector estimates projecting up to $40 billion (approximately ¥6.2 trillion) annually by 2027.

In response, an ElevenLabs spokesperson told Axios that "we maintain comprehensive safeguards to prevent misuse of the technology, block voice clones of celebrities and public figures, and review policy violations through both automated and human means," explaining that the company is incrementally building out watermarking, Voice Verification, policy violation detection, and content provenance information (C2PA-based provenance). In Sifted's personal interview with Mati, he likewise noted that countering deepfakes has been "the top priority since day one of launch," and partnerships with IP holders such as Disney have been framed in this same context.

On the European side, the phased application of the EU AI Act's high-risk and generative AI provisions is scheduled to begin in earnest from mid-2026 onward. Given that ElevenLabs has its main bases in London and Warsaw, the company is being pressed to embed European regulatory compliance earlier than its Silicon Valley competitors. While this represents a compliance cost factor in the long term, as Mati himself suggested at his London Tech Week 2026 appearance, "being European-based can be a strength that allows us to internalize co-design with regulators"—a point that is now being reevaluated by both European and American VCs.

Future Moves — IPO, Klarna Board, Emerging Markets Expansion

The key milestones to be measured over the next 12 to 18 months can broadly be grouped into three.

First, the IPO. Tech.eu and CNBC have clearly reported that at the time of the Series D in February 2026, Mati stated that the company is "preparing for an IPO." While no specific timeline has been disclosed, Bloomberg, citing testimony from sources familiar with the matter, argues that the very fact that a follow-on round involving institutional investors and strategic CVCs took place amounts to "syndicate formation immediately preceding an IPO," and points out the possibility of aiming for pricing at a stage where ARR exceeds one billion dollars (approximately 155 billion yen). Note that, as of now, no official announcement has been made regarding a filing with the SEC or the selection of lead underwriters for the listing, and this article will not delve into speculation-based figures.

Second, there is the full-scale rollout of an emerging markets and localization strategy. As use of the Series D funds, TechCrunch mentioned the opening of offices and expansion of personnel in non-English-speaking regions such as India, Japan, Singapore, Brazil, and Mexico, in addition to the US and Europe. With regard to the Japanese market, while the establishment of an official Japanese subsidiary cannot be confirmed as of the present (May 2026), ElevenLabs' models support more than 30 languages including Japanese, and the localization of enterprise customer sales is expected to begin in stages from the next quarter. Mati himself is confirmed to deliver a keynote at UNBOUND (HubSpot's marketing/sales event, scheduled for September 16–18, 2026), where the geopolitical expansion of enterprise rollout is expected to be discussed further.

Third, Mati's personal participation on external boards is drawing attention as a cross-industry signal. In May 2025, he joined the board of directors of Klarna Group PLC. Klarna's CEO Sebastian Siemiatkowski expressed his welcome in a post on X, stating that "Mati's AI insight, his track record at ElevenLabs, his Polish roots, and even the similarity of having a complex surname all make him an ideal board member." How Mati, as an external director, influences the design of "AI financial assistants" emerging at the intersection of AI and financial services is a point being observed by VCs in both Silicon Valley and European fintech.

Evaluations from Colleagues and the Industry — The True Image of a 31-Year-Old Billionaire

Forbes ranked Staniszewski 2,274th in the world on its 2026 Billionaires List, with an estimated net worth of $1.1 billion (approximately ¥170.5 billion). He and Dąbkowski are each said to hold roughly a 15% stake in ElevenLabs, with the Series D valuation of $11 billion serving as the basis for the net-worth estimate. In its December 2025 issue, Forbes magazine featured the two on the cover, running "How a Small Polish Startup Became the Center of AI Voice" as its lead feature.

Internal assessments within the organization are not uniformly aligned with the tone of external acclaim. Aggregating 36 reviews on Glassdoor, the overall rating is 4.3 out of 5, with 77% of employees saying they would recommend the company to a friend — high marks as a workplace that grants substantial discretion on the technological frontier. Positive factors cited include cultural diversity, with talent drawn from more than 30 countries centered on NYC, London, and Warsaw; the breadth of engineering ownership; and the proximity to the founders. On the other hand, the work-life balance rating is comparatively low at 3.8, with voices noting that working over 60 hours per week has become the norm, and a small number of criticisms exist regarding cronyism in hiring and factional management within the Forward Deployed Engineering division. eFinancialCareers highlighted the anecdote that Staniszewski, as CEO, continued conducting first-round interviews with every hiring candidate even after ARR surpassed $200 million (approximately ¥31 billion), analyzing that scaling the "on-the-ground" style characteristic of Palantir alumni without modification is both a strength and a source of organizational growing pains.

Overall, what the prominent Silicon Valley VC community values at the core of Staniszewski converges on the point that he is, rather than a "technical genius," "an exceptionally rare deployment-type CEO who can tenaciously draw containment lines across every terrain — language, regulation, operations, and sales." The fact that Andrew Reed (Sequoia), Jennifer Li (a16z), and Seth Pierrepont (ICONIQ) have each publicly stated separately that "he is an exceptional founder/leader" speaks to how the aesthetic of VCs who, amid the AI bubble, "choose by execution rather than hype" has converged on this 31-year-old of Polish origin. The next milestone is the starting gun for an AI IPO that Silicon Valley has long been waiting for, and whether ElevenLabs will be the first to ring that bell — this is the largest point of observation from the latter half of 2026 into the first half of 2027.

Sources