Nikkei Asia reported on 12 October that NTT Data Group is in late-stage talks to build a data center in western Japan for Anthropic, the U.S. AI company. Nikkei said multiple sources told it this. Its headline places the site in Osaka. Nikkei said the building could cost $6.3 billion, and that part of it could open by 2028. It called the site Anthropic's first dedicated data center in Japan. It said the site would be among the biggest in the country for computing power.
This is a report of talks, not a finished deal. The material gives no figure for power or server count, so "among the biggest" has no number behind it. It does not say when the whole site would open or who would pay for it. The $6.3 billion is a "could cost" estimate. No statement from NTT Data or Anthropic is reported.
For teams in Japan that build or buy AI software, the report points to Anthropic planning its own computing site in the country. Talks are not a signed deal, so the plan is worth tracking until the companies confirm it.