Rime has secured $24 million in Series A funding led by M13 Ventures to advance its enterprise voice AI technology. The startup aims to replace traditional IVR systems by using proprietary conversational data to improve accuracy and user experience. The capital will support team expansion and the development of new speech-to-speech models.
San Francisco-based voice AI startup Rime has successfully raised $24 million in a Series A funding round. The investment was led by M13 Ventures, with participation from institutional investors including Twilio Ventures, Corazon Capital, and Unusual Ventures.
Founded in 2022, Rime is working to improve how businesses automate customer support and sales calls. A key part of its business strategy involves collecting proprietary conversational data in a specialized recording studio. By using this custom-trained data, the company aims to offer a product that requires less technical setup and retraining for enterprise clients compared to existing market solutions.
Advancing Voice AI Models
Rime is currently working to move beyond the limitations of standard voice AI tools. While many current systems rely on connecting separate models to transcribe and speak, the company is shifting its focus toward integrated speech-to-speech models. This change is intended to address common technical problems in the industry, such as high latency—the delay between a user speaking and the AI responding—and the difficulty of managing natural conversations in noisy environments.
Despite the recent excitement around AI, management has acknowledged that many companies still prefer legacy Interactive Voice Response (IVR) systems. These traditional systems are often seen as more reliable for high-stakes business operations. By focusing on models that can better pronounce industry-specific jargon and brand terms, Rime is attempting to bridge the gap between simple automated menus and human-like interaction.
Scaling Operations and Talent
The company has already started working with clients across sectors such as healthcare, fintech, airlines, and food services. Current corporate customers include names like Mayo Clinic, Dialpad, Upstart, and Asurion. To support this growth, Rime plans to use the fresh funding to hire more engineers and model developers.
As part of the funding, Morgan Blumberg from M13 Ventures will join the company’s board of directors. The startup also recently strengthened its research team by hiring Rafael Valle, formerly of Meta Superintelligence Labs and NVIDIA, as Chief Scientist.
For industry observers and potential enterprise partners, the main monitorable in the coming months will be the company’s ability to scale these speech-to-speech models while maintaining reliability across different business environments. Success will likely depend on whether they can prove their technology significantly outperforms legacy systems in actual customer call outcomes and reduced operational complexity.