# Rime

> Rime is a San Francisco voice AI company building human-sounding text-to-speech models for enterprise. Founded by linguists and engineers, its Mist and Arcana models power more than 100 million customer phone conversations every month for brands including Domino's and Wingstop, with sub-200ms response times and pronunciation control designed for production call centers.

- **Founded:** 2022
- **Headquarters:** San Francisco, United States
- **Founders:** Lily Clifford (CEO & Co-founder), Brooke Larson (Co-founder (Linguistics); ex-Amazon Alexa), Ares Geovanos (Co-founder (Engineering & Product))
- **Team size:** ~28
- **Products:** Mist v2, Arcana v2, Rimecaster, Coda, Voice API
- **Notable:** Powers 100M+ phone conversations per month, Sub-200ms time-to-first-audio in production, Raised $5.5M seed led by Unusual Ventures (May 2025)

## Products & services

- **Mist v2** — Deterministic, low-latency TTS model for high-volume production calls, with API-controlled pronunciation that holds across 40+ voices.
- **Arcana v2** — Expressive next-generation TTS with 40+ voices in English, Spanish, French and German, trained on real customer service speech.
- **Rimecaster** — Open-source speech model released in 2025, built on real-world conversational data.
- **Coda** — Flagship balanced model tuned for enterprise speed and concurrency.
- **Voice API** — Single API with sub-200ms time-to-first-audio, custom pronunciation, on-prem deployment and HIPAA / SOC 2 Type II compliance.

## Achievements

- Powers 100M+ phone conversations per month
- Sub-200ms time-to-first-audio in production
- Raised $5.5M seed led by Unusual Ventures (May 2025)
- Released open-source Rimecaster speech model
- Reported 15% sales lift for major brands using its TTS (VentureBeat)

## Latest updates

- **2025-05** — Closed $5.5M seed round led by Unusual Ventures.
- **2025-05** — Released Arcana and open-source Rimecaster models.
- **2025** — Launched Arcana v2 with on-prem support and multilingual coverage (EN, ES, FR, DE).
- **2025** — Rime models made available on Together AI dedicated endpoints.

## Links

- Website: https://rime.ai
- LinkedIn: https://www.linkedin.com/company/rime-ai
- Twitter/X: https://twitter.com/rimelabs
- GitHub: https://github.com/rimelabs

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Profile page: https://yespress.io/rime
Published by YesPress — https://yespress.io
Last updated: 2026-06-28