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In the Voice section, you choose and customise exactly how your agent sounds to the customer. It has a few major parts.

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Voice Provider

There are 4 main providers. The rupee figures below are rough cost guides.
Note: Avoid using emojis and special characters in the system prompt — they can break the agent’s behaviour during a live call.

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Voice Models

Every provider has its own voice models. A voice model’s job is to turn text into speech (this is called TTS, or Text To Speech).

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Voice

This is the actual voice the customer hears on the call. Every provider offers different voices, and each voice has its own character — some are sharp, energetic, and engaging, while others are calm, soothing, and friendly.

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Voice Parameters

Each provider also gives you settings to fine-tune the voice:
  • Voice Speed (ElevenLabs, Cartesia, Sarvam, Azure): controls how fast or slow the agent talks.
  • Voice Stability (ElevenLabs): decides whether the agent sounds like a real human or a robot.
  • Voice Similarity Boost (ElevenLabs): how closely the agent’s voice matches the original voice it was trained on.
  • Voice Style (ElevenLabs): makes the voice more expressive and dramatic — like turning up the emotion dial.
  • Voice Volume (Cartesia, Azure): controls how loud or soft the agent speaks.
  • Voice Pitch (Sarvam, Azure): makes the voice younger and brighter, or deeper and more mature.