Mar 13, 2025
How do you actually build a voice AI agent?
Jack Rossi Mel - Talk AI
Founding Team
Where do you even start?
What’s the tech stack behind it?
How do you train the system?
What about testing?
How long does it take?
Where do you even start?
It begins with mapping conversations. List out the common questions and tasks customers bring up on calls. These become the “call flows” your AI agent needs to handle.
What’s the tech stack behind it?
● Speech-to-text: Converts spoken words into text.
● Language model: Understands meaning and decides what to say back. ● Text-to-speech: Generates a natural voice reply.
● Telephony integration: Connects it to phone systems.
● CRM/booking integration: Stores data and actions from the call.
How do you train the system?
You feed it with sample conversations, FAQs, and scenarios. Testing with real staff is important - your team knows the flow of calls better than anyone.
What about testing?
Don’t stop at five test calls. Run dozens, covering every edge case. What happens if a caller mumbles? Interrupts mid-sentence? Uses slang? Testing reveals gaps you wouldn’t spot on paper.
How long does it take?
Basic agents can be set up in weeks. Complex ones with deep integrations take longer. But once built, they can scale without extra staff.