> ## Content Index > Fetch the complete content index at: https://www.sotkn.com/llms.txt > Use this file to discover other available public pages before exploring further. # NTT Data talks a $6.3B Osaka data center for Anthropic - URL: https://www.sotkn.com/wire/ntt-data-anthropic-osaka-6-3b-data-center-talks-wire/ - Published: 2026-10-13T06:00:57.000Z - Updated: 2026-10-13T06:00:57.000Z - Description: Nikkei reported on 13 October that NTT Data Group is in final-stage talks to build Anthropic's first dedicated Japan data center in Osaka. Construction could cost up to ¥1 trillion, about $6.3 billion, with partial opening as early as 2028. This is talks, not a signed lease. - Author: Sean - Tags: #desk-wire `WIRE` · `AI DATA CENTERS` · `JAPAN` · Data as at 13 Oct 2026 NTT Data Group is in the **final stages of talks** to build Anthropic's first dedicated Japan data center in **Osaka**, Nikkei reported on **13 October 2026**. Construction could cost up to **¥1 trillion**, about **$6.3 billion**. Partial opening is pencilled for as early as **2028**. This is talks, not a signed lease. On the [AI data centers layer](https://www.sotkn.com/stack/ai-data-centers/), the cash question is who gets paid to host the model lab — and whether Japan grid power arrives in time for the halls. ## What happened 13 October 2026 · Nikkei **Final-stage talks: NTT Data to host Anthropic in Osaka** Named landlord and tenant. Anthropic's first dedicated Japan campus. NTT declined to comment Construction print **Up to ¥1 trillion, about $6.3 billion, to build** Building cost only. GPU-filled halls would push total investment higher, sources told Nikkei Clock **Aim to sign by end of FY2026 (31 March 2027); partial open as early as 2028** About 15 months from today's report to the earliest partial date — and only if a deal lands Capacity (reported) **Reports citing Nikkei put power intake at up to 500 MW** Nikkei's free Japan lede calls intake "largest-class" in the country. Treat 500 MW as report-sourced, not company-confirmed --- ## Why cash cares A model lab does not earn from a Japanese user until someone builds and powers the hall. The parties named here are the ones that get paid if the talks close: **NTT Data** as builder and host, and later the vendors that fill racks with GPUs. Anthropic is the tenant that would commit offtake. Nothing clears until a lease or build agreement is signed. The stuck step is **power before halls**. Reports citing Nikkei say 500 MW of grid intake would take time to secure, so early phases may lean on on-site generation and fuel cells. That is the same bind that shows up on other large Asia campuses: land and a landlord are not enough if the megawatts arrive late. Our arithmetic, not a company figure. If construction is priced at the ¥1 trillion ceiling against a 500 MW reported intake, that is about **¥2 billion per MW**, or about **$12.6 million per MW**, for the building shell alone. Fill the halls with AI servers and Nikkei-sourced reports say the all-in figure can run to several trillion yen. The $6.3 billion is the construction print that clears the Wire bar on its own; the 500 MW figure is the capacity claim that would put Osaka among Japan's largest AI campuses if it sticks. ![NTT Data × Anthropic Osaka: $6.3B construction talks on a path to 2028](https://storage.ghost.io/c/cd/10/cd10e222-131f-4ba4-b4a9-ca4214e8c12d/content/images/2026/10/osaka-talks-clock-print.png) **Figure: Talks, not a lease.** Construction print, sign target, and earliest partial open. Capacity MW is report-sourced. ## The second-order read **Who gets paid.** NTT Data first, if and when a build agreement lands — construction spend and then hosting rent. Power and cooling vendors next. GPU and networking sellers only after Anthropic commits to fill the halls. **Who waits.** Anthropic's Japan capacity. Partial open in 2028 means no dedicated Japan hall prints revenue for the lab until then, even if they sign by March 2027. **Who carries the risk.** Both sides while the deal is still talks. NTT has not confirmed the project. A slip on the FY2026 sign target pushes 2028 partial open further out. Grid power at the reported scale is the operational risk after any signature. **Stuck step.** Signed offtake plus power. A ¥1 trillion shell without a signed lease, or a signed lease without megawatts, leaves cash on the table. ## Two cautions This is **final-stage talks**, not a closed lease. NTT declined to comment. Treat the 500 MW intake as report-sourced until either company files or confirms it. The $6.3 billion is a construction ceiling in the reporting, not a guaranteed spend, and not the all-in cost of a filled AI campus. ## What would change the view - A signed agreement with a public MW figure, site, and term. - A company confirmation (or denial) of the ¥1 trillion / 500 MW prints. - A Japan utility or prefecture filing that names the campus and a connection date. ## What to watch - **The FY2026 sign clock**: a deal by 31 March 2027, or a slip that moves 2028. - **Power path**: grid allocation versus on-site generation for the first halls. - **All-in capex**: whether GPU fill is disclosed as a separate multi-trillion-yen line. *Read: [AI Data Centers](https://www.sotkn.com/stack/ai-data-centers/), [How Long Does It Take to Build an AI Data Center?](https://www.sotkn.com/explained/how-long-does-it-take-to-build-an-ai-data-center/), and [Indiana approves AES plan to power Google's 390 MW Monrovia data center](https://www.sotkn.com/wire/indiana-aes-google-monrovia-390-mw-data-center-power-wire/)* --- **Get the Wire.** A free brief every day, here and in your inbox. **[Subscribe free →](https://www.sotkn.com/#/portal/signup)** Not investment advice. Do your own research. The ¥2 billion per MW, $12.6 million per MW, and \~15-month clock figures are our arithmetic from Nikkei-sourced reporting. ## References 1. [Nikkei Asia, "NTT to build first data center for Anthropic in Japan"](https://asia.nikkei.com/business/technology/artificial-intelligence/ntt-to-build-first-data-center-for-anthropic-in-japan?ref=sotkn.com), 13 Oct 2026 11:00 JST. Final-stage talks, Osaka, up to $6.3bn construction, partial opening by 2028, largest-class capacity in Japan. 2. [Nikkei (Japan), "NTTがアンソロピック向けデータセンター 日本初、大阪で開設へ"](https://www.nikkei.com/article/DGXZQOUC059W20V01C26A0000000/?ref=sotkn.com), 13 Oct 2026 11:00\. Final adjustment for Osaka Prefecture campus, construction up to ¥1 trillion, power intake among Japan's largest-class, Anthropic's first Japan hub. 3. [CNA / Reuters, "NTT Data in final talks to build Anthropic's first data centre in Japan, Nikkei reports"](https://www.channelnewsasia.com/business/ntt-data-in-final-talks-build-anthropics-first-data-centre-in-japan-nikkei-reports-6454731?ref=sotkn.com), 13 Oct 2026\. Restates Nikkei: up to ¥1 trillion ($6.3bn), up to 500 MW intake, sign by end FY2026 (31 March), partial ops as early as 2028, NTT declines comment. 4. [Tech Observer, "NTT Data in talks to build $6.3 billion data centre for Anthropic in Japan"](https://techobserver.in/news/enterprise-it/data-center/ntt-data-anthropic-osaka-data-centre-japan-329901/?ref=sotkn.com), 13 Oct 2026\. Nikkei-sourced: 500 MW, FY2026 sign target, early-phase on-site power / fuel cells, GPU fill could push total investment to several trillion yen. 5. [Nikkei (Japan), "大阪湾岸、工業集積地からデータセンターハブへ"](https://www.nikkei.com/article/DGXZQOUF097ZY0Z01C26A0000000/?ref=sotkn.com), 13 Oct 2026 12:20\. Osaka bayfront context for NTT Data's southern Osaka Prefecture largest-class DC talks.