Retell uses OpenAI models to help power 100M monthly calls
OpenAI features Retell, which uses its models to help power 100 million calls a month. Summary based on the title only.
What the article says
On October 27, 2026, OpenAI published a customer story about Retell AI, a voice AI platform for contact centers serving more than 4,000 businesses. Its monthly call volume grew from 30 million in early 2026 to more than 100 million in September. Retell says OpenAI models generate responses for 80 percent of calls, that customers reach resolution rates above 80 percent, and that it has passed one trillion tokens consumed.
The page cites Retell's vCX benchmark, in which GPT-6 Astra ranked first for instruction following with 89.7 percent on October 13, 2026, and median first-sentence latencies of 883 milliseconds for GPT-6 Astra and GPT-6 Sol. It describes customer cases (Anker at 80.4 percent resolution, Pine Park Health freeing the equivalent of 2.1 full-time roles) and engineers' use of Codex, with the company reporting $1.6 million in annualized revenue per employee. These figures are reported by Retell. The company plans to strengthen quality assurance, simulation and support for more languages.
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