ChatGPT expands role in Japanese video production and email drafting

In Japan, creators are using ChatGPT to streamline video production by generating outlines, scripts, and other pre‑production material, while external AI tools handle the actual video rendering. The model itself cannot output video, but it speeds up planning and content structuring, reducing time and cost.

Business users are also applying custom GPTs to replicate their personal email style. By feeding the system with a handful of past messages, the custom model extracts tone and formatting cues, enabling fast generation of replies that feel authentic and maintain appropriate business etiquette.