Retell AI

Voice AI agents for call centers

Retell AI rebuilds the call centre around voice AI. Thousands of companies use its agents to handle sales, support and logistics calls that previously required large teams of people. Rather than basic automation needing constant human tuning, it builds intelligent workers that fill several roles at once: frontline agent, QA analyst and manager, so the system executes calls, monitors their quality and improves itself from what it finds. The company reached 80 million dollars in annual recurring revenue with a team of 50, up from 5 million at the start of 2025. G2 ranked it the third fastest-growing software company in its 2026 awards.