Mati Staniszewski
About Mati Staniszewski
Mati Staniszewski is a Polish entrepreneur based in the United Kingdom. He grew up in Poland and moved to the UK to study mathematics at Imperial College London. He co-founded ElevenLabs with Piotr Dabkowski, a friend from high school, and has been its CEO since 2022. ElevenLabs builds speech synthesis and voice agent software using deep learning.
Before ElevenLabs, he worked at Opera Software and at BlackRock, where he joined the Portfolio Analytics Group and helped launch the Aladdin Wealth platform. Crunchbase lists him as a Deployment Strategist at Palantir Technologies from October 2018 to January 2022. In that role he worked on large implementations across public and private sectors.
PitchBook and other profiles say he joined the board of Klarna in 2025. His LinkedIn profile is at linkedin.com/in/matiii.
Crunchbase shows 27 personal investments, 0 lead investments, 0 exits and 0 companies founded. It does not show a portfolio company count for this profile. The zero lead count means the listed rounds were led by other investors and he took part as a co-investor or angel.
The earliest dated deals found are in 2023. PitchBook lists seed-stage and early-stage angel participation in Zeta AI (January 2023) and Pika (November 2023). Data providers count his deals differently. PitchBook lists 6 investments and Tracxn lists 8, so the Crunchbase figures are the fullest public count.
Most deals appear alongside institutional funds and other operator angels. He is listed next to Sequoia, Index Ventures and Accel in the rounds below.
Crunchbase counts 21 AI investments since 2023. Its list of his AI portfolio includes Mirai, Latent Labs, Lovable, Anam, Stilla AI, Pocket, CodeWords, Arrakis Security, Oboe, Wonder Studios, VitVio and Slingshot AI.
Other dated rounds from public data providers:
Pika: November 2023 and July 2024 (PitchBook). Zeta AI: January 2023 seed and June 2024 (PitchBook). LiveKit: June 2024 (PitchBook). Latent Labs: February 2025 (PitchBook). Mirai: a $4M pre-seed II in July 2025 and a $10M seed in February 2026 (CB Insights). Lovable: the $200M Series A in July 2025, led by Accel (Tracxn). Black Forest Labs: Series B in December 2025 (Tracxn). A Fundable profile lists Dust among his recent angel investments, and AlphaGrowth lists a pre-seed round in vlayer in September 2024.
Public data shows he invests mainly in AI companies, with the largest share in generative AI, software and machine learning. The rounds are mostly pre-seed, seed and Series A. Some later rounds appear too, such as Lovable's Series A and Black Forest Labs' Series B. Crunchbase also lists some non-AI companies, including Dwelly (Series B), so the portfolio is not exclusively AI.
The companies span voice and conversational AI (Anam, Pocket), generative media (Pika, Wonder Studios), developer infrastructure (LiveKit, Lovable), AI for science (Latent Labs) and on-device AI (Mirai). Tracxn lists investments in the United States, the United Kingdom and three other regions.
He has not published a check size, a fund size or a statement of investment criteria that we could find. Founders should not assume a typical cheque from the round sizes above, since those are total round amounts. PitchBook marks him as actively seeking new investments. He is best approached with a short, specific message that shows why the product relates to his work on voice and applied AI.
- Mirai: AI startup that raised a $4M pre-seed II in July 2025 and a $10M seed in February 2026, both with his participation.
- Latent Labs: AI company working on healthcare and biology technology; PitchBook dates his investment to February 2025.
- Lovable: AI app-building company; he joined its $200M Series A in July 2025, led by Accel.
- Pika: AI video and multimedia software company; PitchBook dates his investments to November 2023 and July 2024.
- LiveKit: real-time audio and video infrastructure for developers; investment dated June 2024.
- Black Forest Labs: image generation model company; Tracxn lists him in its Series B in December 2025.
- Pocket: seed-round company on his Crunchbase profile, with Accel among the investors.
- Zeta AI: business productivity software; investments dated January 2023 and June 2024.
- Anam, Stilla AI, CodeWords, Arrakis Security, Oboe, Wonder Studios, VitVio and Slingshot AI: AI portfolio companies listed by Crunchbase.
- crunchbase.com/person/mati-staniszewski
- crunchbase.com/person/ab151276-24b5-4f8d-bdbe-665a05163ce2
- en.wikipedia.org/wiki/Mati_Staniszewski
- elevenlabs.io/blog/authors/mati-staniszewski
- pitchbook.com/profiles/investor/553113-46
- tracxn.com/d/people/mati-staniszewski/___j-SVmArkr-fnDZ92RVXwrIGbDjCsI
- tracxn.com/d/companies/lovable/__fO6WUvzcx5q3814ietMd3kzGlRirsatzsTnpx
- cbinsights.com/investor/scooter-braun
AI portfolio
Investing activity
Mati Staniszewski has made 27 investments according to Crunchbase. 21 of those investments since 2023 were in AI companies, including Mirai, Latent Labs, Lovable, Anam and Stilla AI.
Mati Staniszewski appears in 4 AI deals tracked by the Lounge deals desk, rounds totalling $11M. The rounds are mostly Seed and Pre-seed, with a median round size of $9M and the largest at $11M. The most recent are Arrakis Security (Seed, $8M, Aug 2026), Pocket (Seed, $11M, Jun 2026) and CodeWords (Seed, $9M, May 2026).
Mati Staniszewski most often invests alongside Hetz Ventures, Amitai Ratzon, Ofer Smadari and Accel, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Mati Staniszewski
Who is Mati Staniszewski?
He is the co-founder and CEO of ElevenLabs, a voice AI company, and he is based in the United Kingdom. He is also an angel investor in AI startups and sits on the board of Klarna.
Does Mati Staniszewski invest in AI startups?
Yes. Crunchbase lists 21 AI investments since 2023 out of 27 total. They include Mirai, Latent Labs, Lovable, Anam, Stilla AI and Pocket.
What check size does Mati Staniszewski write?
His check size is not public. Public databases show total round sizes, not his own contribution, so we do not state a figure.
What stage does Mati Staniszewski invest in?
The rounds on record are mostly pre-seed, seed and Series A. He has also joined some later rounds, such as Black Forest Labs' Series B.
Does Mati Staniszewski lead rounds?
Crunchbase shows 0 lead investments. The deals found were led by other investors, with him joining as an angel or co-investor.
How can founders contact Mati Staniszewski?
His public profiles are LinkedIn (linkedin.com/in/matiii) and X. He has no personal investing site that we found, and no public submission process for pitches.
Is Mati Staniszewski an angel investor?
Yes. Mati Staniszewski invests personally as an angel. Crunchbase counts 27 investments.
What AI companies has Mati Staniszewski invested in?
Mati Staniszewski's AI investments include Mirai, Latent Labs, Lovable, Anam, Stilla AI, Pocket, CodeWords and Arrakis Security. The 4 rounds on Lounge are listed on this page with amounts, dates and co-investors.
Where is Mati Staniszewski based?
Mati Staniszewski is based in United Kingdom.
What stage does Mati Staniszewski invest at?
In the rounds tracked on Lounge, Mati Staniszewski has invested at Seed and Pre-seed, with a median round of $9M.