Retell is showing how AI voice agents are moving from demos into large-scale business operations. According to OpenAI, the company now uses OpenAI models to help power 100 million calls each month, demonstrating strong demand for automated, natural-sounding voice interactions.
A key highlight is that GPT-6 Astra topped Retell’s voice agent benchmark, suggesting meaningful gains in the quality, reliability, and usefulness of AI-powered calls. For businesses, better voice agents can mean faster customer support, more consistent service, and the ability to handle high call volumes without sacrificing responsiveness.
AI productivity at startup scale
Retell is also using Codex to accelerate its internal work, helping the company reach a reported $1.6 million annual revenue run rate per employee. That figure points to the growing role of AI as a force multiplier for lean teams building and operating complex products.
- 100 million monthly calls powered with help from OpenAI models
- GPT-6 Astra ranked highest in Retell’s voice agent benchmark
- Codex supports faster development and operational efficiency
Overall, this is a strong example of AI creating tangible business value: improving customer communication, helping startups scale, and enabling smaller teams to serve large markets more effectively.