CoeFont and AIdeaLab create Japanese comedian Hiroyuki Miyasako’s AI avatar

Stars on Japanese variety show, Ametalk, will be able to chat with AI Hiroyuki Miyasako in real time.

2 min readJan 4, 2024

CoeFont Co., Ltd. announced that they launched AI Hiroyuki Miyasako in collaboration with AIdeaLab. The project was created for and broadcast on Japanese TV Asahi’s popular show “AmeTalk,” on Saturday 30th December.

January 4th, 2023, 12:00 JST

The Japanese variety show, Ametalk, commissioned CoeFont and AIdeaLab to create an AI avatar of comedian and former host of their talk show, Hiroyuki Miyasako, as part of a unique project. With Miyasako’s permission, the teams trained the AI using past footage of the show, which included learning a vast amount of data, the length and pattern of the answers, and other relevant information to ensure natural conversation. The teams made adjustments up until the day of the programme recording to ensure a seamless and professional final product that could interact with celebrities on the show.

The Technology

Digital Voice:CoeFont

AI video generation:AIdeaLab

Text Creation:GPT-4(Supervised by:AIdeaLab)

Broadcast Information

TV Channel:TV Asahi (テレビ朝日)

Show Name:Ametalk End of Year Special (アメトーーク年末SP)

Broadcast date and time:December 30th 2023, 18:00~23:40

AI Voice Platform CoeFont

CoeFont ( ), an innovative AI Voice Platform using the latest AI technology to convert voices into expressive, easy-to-use digital voices which can be used with Text-To-Speech, Voice Changer, and Cross-Lingual TTS. The CoeFont platform provides immediate access to our Voice Hub with over 10,000 diverse digital voices. Whether for training sessions, internal announcements, audiobooks, promotional content, or live during meetings or streaming, these voices are always ready to bring your ideas to life.

About CoeFont Co., Ltd.

CoeFont Co., Ltd. develops and provides AI-based services, established in 2020 and registered as a Tokyo Tech Venture. We are currently conducting research on AI-based voice synthesis and providing “CoeFont” under the concept of “bringing voices to all creators.” We aim to pioneer the voice content market with easy-to-understand natural AI voices.

About AIdeaLab Inc.

AIdeaLab Inc. ( is a start-up studio specializing in developing AI-based products from ideation to creation. The company is currently developing three innovative products: AI Picasso, which is Japan’s first image-generating mobile app, AI Minute-taker-kun, an AI-powered tool for taking minutes, and CommentScreen, which adds more excitement to online events.




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