San Francisco-based Rime has raised $24 million in a Series A led by M13, with participation from Twilio Ventures, Corazon Capital, Cadenza Ventures, and Unusual Ventures.
Rime is developing speech-to-speech foundation models that make AI conversations sound natural, responsive, and trustworthy.
Rime’s voice models already power nearly 100 million phone calls a month for enterprise clients, including Mayo Clinic, Dialpad, Upstart, and Asurion, and the new funding will accelerate research and product development.
San Francisco-based Rime has raised $24 million in a Series A led by M13, with participation from Twilio Ventures, Corazon Capital, Cadenza Ventures, and Unusual Ventures. Morgan Blumberg, Partner at M13, joins Rime’s board as part of the deal.
Founded in 2022 by Lily Clifford, who left a Stanford linguistics PhD to start the company, alongside Brooke Larson, a PhD linguist and former Amazon Alexa engineer, and Ares Geovanis, a Stanford engineer, Rime is building speech-to-speech models that understand, generate, and respond in real time.
