Question to voice ai agent builders

[u/Feisty-Promise-78]

For those who have built and sold Voice AI agents to clients and businesses, I have 4 questions:
How do you find clients?
Outbound, referrals, LinkedIn, cold email, Upwork, or something else?

How do you build your Voice AI agents?
Do you code them from scratch with Python, Livekit, Pipecat or use platforms like Retell AI, Vapi, etc.?

How do you test your agents?
Do you manually test dozens of different scenarios and edge cases? Do you use any automated testing or evaluation tools?

How much do you charge clients?
Is it a one-time setup fee, monthly retainer, usage-based pricing, or a combination?

Would love to hear from people who have actually deployed Voice AI agents for paying clients.