# Rime

Use Rime neural speech synthesis with Bolna voice agents for expressive, natural sounding voices. High quality TTS that makes phone conversations engaging.

[Official Documentation](https://docs.rime.ai/)

## How Rime fits in the stack

### Best for
Natural delivery, tone, and response speed on live calls.

### Use this layer when
You care about voice quality, expressiveness, or low-latency playback.

### Connects to
LLM output upstream and the phone network downstream.

## Text-to-speech is the speaking layer
This provider turns the agent’s response into audio the caller hears. It affects brand perception, caller comfort, and how quickly the next utterance can begin.

**Voice Stack**  
Telephony ➔ STT ➔ LLM ➔ TTS ➔ Tools

This page focuses on where Rime fits in a production voice stack. For full setup steps, credentials, and API details, use the documentation link above.

# Overview

Rime delivers high quality neural text-to-speech that feels genuinely human, not robotic. Its voices are expressive and natural, capable of conveying emotion and personality in a way that makes conversations more engaging.

With Bolna’s Rime integration, you can build voice agents that sound real and relatable, helping improve caller trust and overall experience. Rime’s strength lies in its ability to handle prosody and intonation beautifully, so interactions flow smoothly and feel authentic rather than scripted.

## Features & Use Cases

**Neural Voice Quality**  
Advanced neural models deliver exceptionally natural speech with proper emphasis, emotion, and human-like characteristics.

**Expressive Prosody**  
Rime voices convey appropriate emotion and emphasis, making agents sound engaged rather than monotone.

**Multiple Voice Personas**  
Diverse voice library covering different ages, genders, and speaking styles for brand alignment.

**Use Case: Premium Customer Experience**  
Deploy voice agents for luxury brands where voice quality directly reflects brand perception.

**Use Case: Healthcare & Counseling**  
Build empathetic voice agents for sensitive conversations where natural, warm voices improve patient comfort.

## Other providers in this layer

- [Synthesizer **Cartesia**](/content/integrations/cartesia/index.html)  
  Add Cartesia text-to-speech to Bolna voice agents for ultra-fast, natural sounding voice output. Built from the ground up for real-time phone conversations.
- [Synthesizer **ElevenLabs**](/content/integrations/elevenlabs/index.html)  
  Give your Bolna voice agents lifelike speech with ElevenLabs. Clone a custom voice or pick from a large library of expressive, natural sounding options.
- [Synthesizer **Sarvam AI (TTS)**](/content/integrations/sarvam-tts/index.html)  
  Full Indian language AI stack for Bolna voice agents. LLM, speech-to-text, and text-to-speech tuned for Hindi, Tamil, Telugu, Kannada, and 10+ languages.

## See where Rime fits in your production workflow

Use the demo to walk through provider selection, stack tradeoffs, and the exact workflow you want Bolna to automate.

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