NBCUniversal deployed an AI-synthesized version of sportscaster Al Michaels' voice on Peacock to narrate personalized daily highlight recaps during the 2024 Paris Olympics. Each Peacock subscriber who opted in received a custom video recap built from clips matching their stated sport preferences, narrated by a voice model trained on Michaels' past NBC broadcasts.

The feature, called 'Your Daily Olympic Recap on Peacock,' used generative AI voice synthesis and a large language model (LLM) with prompt chaining to assemble narration scripts from event metadata and subtitles. Human NBC Sports editors reviewed scripts for accuracy before the AI voice rendered them. NBCUniversal stated that nearly 7 million personalized variants could be generated across the U.S. during the Games, with the AI also capable of greeting viewers by their first name.