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Retell AI
Conversational Voice API for Large Language Models
About Retell AI
Retell AI offers a platform for developers to build, test, deploy, and monitor AI-powered voice agents. The company provides a voice AI API and an agent builder, enabling the creation of custom voice agents for automating and optimizing communication processes. The platform is designed to handle complex workflows and scale to production-ready levels, targeting businesses looking to enhance their call operations and customer interactions through AI.
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The business model appears to be usage-based, with pricing tiers for its AI phone agents. Retell AI serves clients who want to integrate AI voice capabilities into their services, as evidenced by its partnership with companies like Data Leaders and its integration with platforms like Cal.com. The company operates in the growing market of AI-driven communication and customer service automation.
At a glance
- Founded
- 2023
- Headquarters
- Palo Alto, United States
- Sector
- AI
- Power Law
- Colt$25–100M revenue
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Seed4 investors entered at this stage
Y Combinator
Alt Capital
Aaron Levie
Carya Venture Partners
Source: Dealroom Talent Intelligence.
Global footprint
team presence
across markets
Market sentiment
An AI-synthesised read of the highest-engagement posts about Retell AI on X, ranked by likes and reposts, corporate channels excluded.
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Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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