Getting started

Core Concepts

Core Concepts

Learn the fundamental building blocks of larsaai.com , including system prompts, voices, and AI assistants Welcome to the fundamentals of Autocalls.ai. Here, we explore the essential building blocks that you need to understand before configuring your AI assistant and calls.

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1. System Prompt & Initial Message

  • System Prompt
    The “brain” of your AI assistant. It’s a set of instructions that guide the assistant’s behavior and tone of voice.
    This includes important business info, disclaimers, and how you want the AI to handle specific situations or edge cases.
    Example: “You are a helpful phone assistant for Larsa AI, you greet in a friendly manner, confirm the caller’s info, and provide accurate answers.”

  • Initial Message
    The very first thing the AI says.
    Typically short, like: “Hello, thanks for calling Larsa AI!”


2. Voices

Larsa AI integrates with ElevenLabs voices for natural-sounding speech.
You can clone your own voice by providing audio samples or choose from built-in voices.
Each voice can be customized with parameters like speech speed, filler usage, and accent (if available).


3. Putting It All Together

An AI Assistant in Larsa AI is created by combining:

  • A System Prompt

  • An Initial Message

  • A Chosen Voice

Optionally, you can add tools such as “Transfer Call” or “End Call.”
Once your assistant is ready, you can assign it to a phone number (for inbound calls) or to a campaign (for outbound calls).

Key Terminology

Understanding Call Minutes & Billing

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