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Company records / cartesia.ai

Cartesia

Cartesia (cartesia.ai): 9 changes recorded in its website history since January 2024. Homepage last checked 6 November 2026.

Recorded changes

Newest observations first. Each interval bounds when the website changed; it is not an exact event date.

  1. HeadlineBetween and
    BeforeArchitecting AI that learns and interacts like humans
    After#1-ranked for realtime voice. Models and agents built on frontier research.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  2. Go-to-marketBetween and

    Dropped its free sign-up; visitors are now asked to book a demo.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  3. HeadlineBetween and
    BeforeThe fastest, ultra-realistic voice AI platform
    AfterArchitecting AI that learns and interacts like humans

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  4. ComplianceBetween and

    Now states HIPAA and SOC 2 compliance on its homepage.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  5. Go-to-marketBetween and

    Added a free sign-up or free trial.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  6. HiringBetween and

    Opened a job board on Ashby.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  7. HeadlineBetween and
    BeforeReal-time multimodal intelligence for every device
    AfterThe fastest, ultra-realistic voice AI platform

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  8. PricingBetween and

    Added a pricing page.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  9. InvestorsBetween and

    Now shows investor logos: Index Ventures, Lightspeed Venture Partners, The Factory, Conviction, General Catalyst, A*, SV Angel and Databricks Ventures.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation

First recorded website

Observed 9 July 2024

Our earliest capture with readable facts. This is our first observation, not when the company introduced these things. These website claims are not independently verified.

How it described itself

Real time multimodal intelligence for every device

Cartesia is building next-gen foundation models using new subquadratic architectures pioneered by our team at Stanford and CMU.

Homepage

Displayed as investors on the website
Index Ventures · Lightspeed Venture Partners · The Factory · Conviction · General Catalyst · A* · SV Angel · Databricks Ventures

archived pageLink to first observation

All facts above belong to this capture. Unlisted fields mean we have no readable observation, not that they were absent.

How it describes itself

Similar headlines are grouped together. The quote shown is from the last capture in each group, not necessarily the exact wording throughout that period.

  1. November 2026 – November 2026 · 2 captures · latest observed messaging#1-ranked for realtime voice. Models and agents built on frontier research.

    Cartesia builds real-time voice AI: production voice agents, lifelike text-to-speech, and accurate speech-to-text in 44 languages.

    This wording observed 6 November 2026.

    current websiteHistorical capture not publicly available
    Inspect 2 captures in this group
    • 3 November 2026 · #1-ranked for realtime voice. Models and agents built on frontier research. archived page
    • 6 November 2026 · #1-ranked for realtime voice. Models and agents built on frontier research. current websiteHistorical capture not publicly available
  2. June 2026 – July 2026 · 3 capturesArchitecting AI that learns and interacts like humans

    Integrate real-time text-to-speech with Sonic-3.5, Cartesia's streaming TTS API. Generate natural, expressive voices with laughter in 40+ languages — built for AI agents and interactive apps.

    This wording observed 27 July 2026.

    archived page
    Inspect 3 captures in this group
    • 3 June 2026 · Architecting AI that learns and interacts like humans archived page
    • 12 July 2026 · Architecting AI that learns and interacts like humans archived page
    • 27 July 2026 · Architecting AI that learns and interacts like humans archived page
  3. Seen July 2025 · 1 captureThe fastest, ultra-realistic voice AI platform

    Our mission is to build the next generation of AI: ubiquitous, interactive intelligence that runs wherever you are. We're pioneering the model architectures that will make it possible.

    This wording observed 8 July 2025.

    archived page
  4. July 2024 – January 2025 · 2 capturesReal-time multimodal intelligence for every device

    Real-time multimodal intelligence for every device.

    This wording observed 15 January 2025.

    archived page
    Inspect 2 captures in this group
    • 9 July 2024 · Real time multimodal intelligence for every device archived page
    • 15 January 2025 · Real-time multimodal intelligence for every device archived page

Companies in the same space

Other funded startups with the most similar descriptions of what they do. This does not mean they compete directly.

Cite this record

StartupHistory, “Cartesia” company record, https://startuphistory.org/c/cartesia.ai

Machine-readable: /c/cartesia.ai.json. How changes are found: method.