From GameWatcher: “The hype surrounding Starfield is tangible despite being more than one year away and, while details surrounding the upcoming RPG remain generally scarce, we now know that it will have “over 150,000 lines of dialogue.”
The announcement was made by Todd Howard, during Tokyo Game Show 2021’s Xbox Live Stream, which was when Starfield’s full Japanese translation was also confirmed.”
Source: N4G PC Starfield Will Have "over 150,000 lines of dialogue"