Rime launches Prism for speech-to-speech conversations

Rime launched Prism, a speech-to-speech system with an inspectable text checkpoint before spoken replies. Rime offered a trial while describing self-serve fine-tuning APIs as work underway with beta customers.

An inspectable checkpoint before speech

Rime launched Prism on October 28 and offered a free trial. It describes a system that listens to audio, writes its intended reply and continues hearing the user while speaking, allowing application rules to inspect text before audio is delivered. These are Rime’s design claims, rather than independently established task performance. [1][2]

The launch post says self-serve reinforcement-learning and supervised-fine-tuning APIs were being built with beta customers. That work should be distinguished from broadly released self-serve training or public model weights. Writeble likewise separated the hosted documentation from the company’s broader deployment claims. [1][2]

Sources

  1. Introducing Prism: the first composable speech-to-speech model

    Rime · Oct 28, 2026

  2. Rime's Prism Hears the Caller but Writes Its Reply Down First, So Guardrails Can Read It

    Writeble · Oct 29, 2026