Skip to main content
Before you configure your first AI assistant, it helps to understand the three core building blocks the platform is built around.

​
System prompt

The system prompt is the “brain” of your AI assistant. You write a set of instructions that guide the assistant’s behavior, tone, and knowledge. A good system prompt tells the AI:
  • Who it represents (your company and role)
  • What it’s trying to achieve on each call
  • How to handle common situations and edge cases
  • Any business-specific information it needs to reference
Example: 
You are a helpful phone assistant for XYZ Company. Greet callers in a friendly manner,
confirm their name and reason for calling, and answer questions about our services.
If the caller wants to speak with a human, transfer the call.
Start with a template. Go to your assistant’s system prompt field and click Templates to choose a pre-built starting point for your use case.

​
Initial message

The initial message is the very first thing your AI assistant says when a call connects. Keep it short and clear. Example: 
Hello, thanks for calling XYZ Company! How can I help you today?
For outbound calls, the initial message is especially important — it determines whether the person on the other end stays on the line.

​
Voices

Intellixent integrates with ElevenLabs and Cartesia for natural-sounding text-to-speech. You have three options:
  • Choose a built-in voice from the library (multiple languages, accents, and genders available).
  • Clone your own voice by uploading audio samples — useful for brand consistency or a personal touch.
  • Request a voice from the ElevenLabs public library through support.
Each voice can be tuned with parameters like speech speed, stability, and emotional expressiveness.

​
Putting it all together

An AI assistant is built by combining:
  1. A system prompt — what the AI knows and how it behaves.
  2. An initial message — the first words it says.
  3. A voice — how it sounds.
Optionally, you add tools (like call transfer, call ending, or appointment scheduling) to give the AI specific capabilities. Once the assistant is ready, you assign it to a phone number for inbound calls or to a campaign for outbound calls.

​
Next steps

Understanding billing

Learn how call minutes and phone number rentals are charged.

AI assistants overview

Start building and configuring your first assistant.