Retell Uses OpenAI Models to Handle 100 Million Voice Calls a Month

At a glance

Retell, a voice AI agent company, uses OpenAI models to handle 100 million calls per month. According to its introduction post, GPT-6 Astra received the highest score in Retell's performance tests for its voice agents. Codex helped the company reach annual revenue of $1.6 million per employee.

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