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Ultravox.ai
Offers an advanced AI voice platform that enables businesses to create and deploy natural, multilingual voice agents for seamless communication
About Ultravox.ai
Ultravox is an AI startup specializing in advanced voice agents powered by an open-weight Speech Language Model (SLM) that processes speech directly, without converting it to text. This direct speech-to-speech approach enables Ultravox to deliver more natural, fluid, and responsive conversations compared to traditional voice systems that rely on cascaded pipelines and text intermediaries. The platform is designed for seamless integration into web, mobile, and phone-based applications, offering SDKs for all major languages and built-in support for Twilio.
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Ultravox stands out for its multi-lingual capabilities, supporting all major languages and easily adapting to new languages and accents. The system is highly customizable, allowing users to fine-tune models, add custom voices, and even deploy their own open-source or fine-tuned models (BYOM). It also supports on-premises deployment for greater control and privacy.
Key features include high-quality speech, function calling, voice cloning, RAG (Retrieval-Augmented Generation) support, and the ability to handle interruptions and paralinguistic information such as tone and pauses. Ultravox’s performance benchmarks show it surpasses leading models like GPT-4o and Gemini 1.5 Flash in zero-shot speech translation tasks. The service is competitively priced at 5¢ per minute and is openly licensed, making it accessible for a wide range of applications.
At a glance
- Status
- Operational
- Founded
- 2022
- Headquarters
- Seattle, United States
- Employees
- 12
- Open positions
- None listed
- Dealroom signal
- 61.0/100
- Sector
- AI, Speech Recognition, Speech, Voice Recognition, Core AI, Natural Language Processing, Novel AI, Generative AI
- Technology
- Artificial Intelligence, Deep Tech, Machine Learning, Natural Language Processing, Recognition Technology
- Business model
- SaaS
- Client focus
- b2b
Knowledge graph
More headlines
Funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| SEED✓Equity / VC | Mar 2023 | $17M | $68M | Kearny Jackson · Madrona Venture Group · Redpoint · Bloomberg Beta | ↗ |
| SEED✓Equity / VC | Jul 2022 | $5M | $20M | Kearny Jackson · Redpoint · Bloomberg Beta · Zetta Venture Partners | ↗ |
Financials
Revenue, earnings and other financial measures where available. Years marked “E” are estimates.
Growth signals
Latest recorded traffic for Ultravox.ai is 31K monthly website visits, down 47.5% over the last three months. Ultravox.ai's team declined 29.4% over the past year.
Similar companies
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Investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Seed6 investors entered at this stage
Kearny Jackson
Redpoint
Bloomberg Beta
Zetta Venture Partners
SignalFire
Madrona Venture Group
Other known investors4 additional known investors
Erica Brescia
Plug and Play
Sriram Krishnan- SCSunil Chhaya
Source: Dealroom Talent Intelligence.
Global footprint
Market sentiment
An AI-synthesised read of the highest-engagement posts about Ultravox.ai on X, ranked by likes and reposts, corporate channels excluded.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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