
Cartesia
Founded Year
2023Stage
Series A | AliveTotal Raised
$91MLast Raised
$64M | 8 mos agoMosaic Score The Mosaic Score is an algorithm that measures the overall financial health and market potential of private companies.
+184 points in the past 30 days
About Cartesia
Cartesia offers multimodal intelligence and operates within the artificial intelligence sector. It offers a generative voice application programming interface (API), which is characterized by its speed and ultra-realistic output, and provides on-device models for fast, private, and offline inference. It primarily serves the technology sector. It was founded in 2023 and is based in Daly City, California.
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ESPs containing Cartesia
The ESP matrix leverages data and analyst insight to identify and rank leading companies in a given technology landscape.
The voice AI development platforms market provides tools, APIs, and infrastructure for building, testing, and deploying realistic conversational voice applications. These platforms enable developers to create human-like voice interactions with features such as real-time conversation, interruption handling, and low-latency processing. The market includes speech synthesis capabilities, voice recogni…
Cartesia named as Challenger among 15 other companies, including OpenAI, ElevenLabs, and Deepgram.
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Research containing Cartesia
Get data-driven expert analysis from the CB Insights Intelligence Unit.
CB Insights Intelligence Analysts have mentioned Cartesia in 9 CB Insights research briefs, most recently on Oct 23, 2025.


Oct 20, 2025 report
Book of Scouting Reports: 2025’s Digital Health 50
Sep 5, 2025 report
Book of Scouting Reports: The AI Agent Tech Stack
May 16, 2025 report
Book of Scouting Reports: 2025’s AI 100
Apr 24, 2025 report
AI 100: The most promising artificial intelligence startups of 2025Expert Collections containing Cartesia
Expert Collections are analyst-curated lists that highlight the companies you need to know in the most important technology spaces.
Cartesia is included in 7 Expert Collections, including Artificial Intelligence (AI).
Artificial Intelligence (AI)
20,894 items
Generative AI
2,951 items
Companies working on generative AI applications and infrastructure.
AI agents (March 2025)
376 items
Companies developing AI agent applications and agent-specific infrastructure. Includes pure-play emerging agent startups as well as companies building agent offerings with varying levels of autonomy. Not exhaustive.
AI 100 (2025)
100 items
AI agents & copilots
1,772 items
Companies developing AI agents, assistants/copilots, and agentic infrastructure. Includes pure-play emerging agent startups as well as companies building agent offerings with varying levels of autonomy.
AI 100 (All Winners 2018-2025)
100 items
Cartesia Patents
Cartesia has filed 1 patent.
The 3 most popular patent topics include:
- building automation
- children's educational video games
- home automation

Application Date | Grant Date | Title | Related Topics | Status |
|---|---|---|---|---|
9/30/2021 | Home automation, Rotating disc computer storage media, Building automation, Children's educational video games, Scientific modeling | Application |
Application Date | 9/30/2021 |
|---|---|
Grant Date | |
Title | |
Related Topics | Home automation, Rotating disc computer storage media, Building automation, Children's educational video games, Scientific modeling |
Status | Application |
Latest Cartesia News
Oct 31, 2025
“We're watching, in slow motion but also very quickly, the unbundling of institutions,” The Diary of A CEO's Steven Bartlett told the audience at the Forbes Creator Upfronts this week. “When media attention shifts from, say, the old institutions of the past, to people just like you in your bedrooms with microphones, everything changes.” He's speaking about the boom of the creator economy, and his role within it. What started in 2017 as a podcast interviewing people from his flat in London perfectly exemplifies that change: It's now an attention-grabbing, conversation-starting, thought-shaping show that's attracted over a billion streams for his four hour-long episodes on everything from life as a CIA agent to the gut microbiome . He's hit the top of podcast charts (currently at No. 2 on the U.S. business list), and turned down $100 million deals to run his show his way. The bold bets have worked so far: The franchise earned $20 million in revenue in 2024. But neither the money, nor his business ecosystem, is stopping with The Diary of A CEO. This week, Bartlett announced that Steven.com closed an 8-figure investment deal led by Slow Ventures and Apeiron Investment Group— valuing the company at a whopping $425 million . (And Bartlett still owns more than 90%.) Steven.com is the holding company for multiple branches of the business including media studio FlightStory (including shows like Begin Again with Davina McCall and We Need to Talk with Paul C. Brunson, along with The Diary of A CEO ), podcast production and technology platform FlightCast, and the investment arm FlightFund. The investment is indicative of the shift in capital allocation that Bartlett says also stems from the attention on the creator economy. “It's why we're seeing every creator is becoming a VC,” he said, adding that: “Especially in a world with AI, where the cost of producing software or content drops, the game actually becomes who's got distribution? Who's got an audience, who can acquire customers?” With multiple channels of distribution at his disposal, he's set on building the “Disney” of the creator economy. What does that mean? “I think creators come in all shapes and sizes, and all mediums and platforms, so we're super agnostic to that,” he said. Today at FlightStory, that includes teams for newsletters, short form, longform, speaking engagements and events (Bartlett himself just finished an Asia tour in September), book publishing and products. Though so much has changed thanks to creators, we'd be remiss not to mention AI's impact on today's businesses, too. But for Bartlett, it's just another opportunity to grow. GO TO PAGE “The biggest opportunity at the moment as a content creator is translations ,” he said. “Now in a world of AI, you don't need to hire a human dubbing team in South America or Spain to translate your content into Spanish.” These new technologies are critical for his goal of global growth. After all, only 10% of the world is fluent in English. “The other 90% can't get your content,” he said. Bartlett and team are also using AI to bring animation, and even cartoons, into the mix . For instance: Taking a multi-hour episode with a guest, determining the key lesson from the conversation, and turning it into a 20-minute animated series to upload to YouTube Kids. When asked about what will be required of creators in the future, he left us with this: “It doesn't matter what I'm doing now in terms of tactics. It matters that you have a system or principle that will allow you to find the right answer in six months when what I say now has expired,” he said. “The answer is, I don't know, but my team is running so many tangential experiments that we're about to find out. We're going to continue to stay ahead of the curve.” See you next week, Alex and Zoya Why VideoAmp Thinks It Can Bust Nielsen's TV Ratings Monopoly Media companies large and small are up against massive change in the face of AI. TV ratings and analytics company VideoAmp says it can be a tech-forward alternative to outdated incumbents . “They're whipping the horse to get the buggy to move forward; we're trying to figure out how to get our Ferrari to go over 200 mph,” VideoAmp CEO Peter Liguori told Forbes. Lister Lowdown -2025 Under 30 AI company Mercor this week announced its secured $350 million in new funding in a round led by Felicis Ventures. Mercor is helping players like Anthropic, Meta and OpenAI recruit talent to train and improve their AI models. The new round, which saw participation from existing investors Benchmark and General Catalyst, values the company at $10 billion , and makes the three cofounders (Brendan Foody, Adarsh Hiremath and Surya Midha) the world's youngest self-made billionaires . CEO Foody previously sat down with Forbes to discuss how the startup found the white space in the AI universe— read it here -More on the AI boom: Cartesia, a startup working on ultra-realistic voice AI models, this week announced a $100 million raise from Kleiner Perkins, Index Ventures, Lightspeed and Nvidia . With the new funding, Cartesia also announced its new model called Sonic-3 which functions in 42 languages and has “full emotional range,” including laughter. Under 30 listers Arjun Desai and Brandon Yang are two of its five cofounders. Under 30 alum Ziad Ahmed hosted ZCon—a conference bringing together Gen Z minds to discuss everything from the entertainment landscape to politics—in Los Angeles last week. Ahmed was previously the cofounder of JUV Consulting, a firm that helped other brands understand what the younger generations want. JUV was acquired by United Talent Agency in 2024 , and the two now host ZCon as part of the deal. On Our Radar -VC firm Andreessen Horowitz, also known as a16z, is reportedly raising $10 billion across four funds . Cofounded by Marc Andreessen and Ben Horowitz, the firm has been pivotal in backing some of the highest valued startups like Databricks, which is worth some $100 billion. The new funds will each target distinct areas : about $6 billion will go toward late-stage startups such as Databricks; two $1.5 billion funds will focus on AI, one in the consumer sector and the other in compute and data infrastructure, and more than $1 billion will be dedicated to defense technology. ( Financial Times OpenAI is reportedly preparing to file an initial public offering that could value the startup at some $1 trillion , according to Reuters. According to sources, OpenAI could be filing in the second half of 2026, while the Wall Street Journal reported the company could go public as early as 2027. An OpenAI spokesperson told Reuters “An IPO is not our focus, so we could not possibly have set a date.” ( Reuters
Cartesia Frequently Asked Questions (FAQ)
When was Cartesia founded?
Cartesia was founded in 2023.
Where is Cartesia's headquarters?
Cartesia's headquarters is located at 1766 18th Street, Daly City.
What is Cartesia's latest funding round?
Cartesia's latest funding round is Series A.
How much did Cartesia raise?
Cartesia raised a total of $91M.
Who are the investors of Cartesia?
Investors of Cartesia include Lightspeed Venture Partners, A* Capital, Index Ventures, Factory, Samsung Ventures and 17 more.
Who are Cartesia's competitors?
Competitors of Cartesia include Replicate, ElevenLabs, Mistral AI, Respeecher, Dubdub.ai and 7 more.
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Compare Cartesia to Competitors

Replica Studios focuses on AI voice generation and text-to-speech technology in the entertainment and corporate sectors. The company provides products for creating voices for various applications, including gaming, animation, film, and e-learning, using AI capabilities. Replica Studios serves clients such as game developers, animators, filmmakers, and educational content creators, offering voice customization, character voice generation, and workflow integration. It was founded in 2018 and is based in Brisbane, Australia.
Altered focuses on artificial intelligence (AI) in the digital audio content creation industry. The company offers a range of services, including voice changing for media production and real-time communication, premium text-to-speech, voice cloning, AI voice enhancement, and voice editing. Altered primarily serves the media production and communication industries. It was founded in 2018 and is based in London, United Kingdom.

Murf AI develops voice technology that uses artificial intelligence to create voiceovers for various media. The company provides products including text-to-speech, voice cloning, AI dubbing, and AI translation, aimed at improving content accessibility and engagement. Murf AI's solutions serve multiple sectors, offering tools for e-learning, advertising, audiobooks, and others. It was founded in 2020 and is based in Salt Lake City, Utah.

BeyondWords provides AI audio technology for the media and publishing sectors. The company offers tools for voice cloning, creation of audio articles, customizable audio players, analytics, and monetization solutions. BeyondWords serves the media industry, enabling publishers to convert written content into audio. BeyondWords was formerly known as SpeechKit. It was founded in 2016 and is based in London, England.

Lovo offers a digital platform specializing in artificial intelligence voiceover services. The platform allows creators to type a script and generate speech for games, films, advertisements, streaming services, electronic learning institutions, application developers, and more. It serves the technology sector. Lovo was formerly known as Orbis AI. The company was founded in 2019 and is based in Berkeley, California.

LionRocket specializes in deep learning and anomaly detection within the technology sector. The company offers artificial intelligence (AI) solutions that focus on synthetic dataset generation and learning improvements and include functionalities for fake news detection and noise reduction in datasets. Its primary clientele includes educational institutions and research organizations that utilize AI for academic and data integrity applications. It was founded in 2019 and is based in Seoul, South Korea.
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