Retell uses OpenAI models to support 100 million monthly calls
What happened
On 27 October 2026, OpenAI News reported that Retell uses OpenAI models to support 100 million calls a month, that GPT-6 Astra ranks first on its voice agent benchmark, and that Codex helped Retell reach $1.6 million in annualised revenue per employee. This is the only report on the matter so far, with no earlier coverage to compare against and no contradictions in figures, timing or claims. The story stands at the point where OpenAI has disclosed Retell's scale of model use and internal efficiency data.
Written by AI from the reports · updated 4 h ago
Timeline
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- OpenAI NewsRetell uses OpenAI models to help power 100M monthly calls
GPT-6 Astra tops Retell’s voice agent benchmark, while Codex helps it reach a $1.6M annual revenue run rate per employee.
Heat of this event
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