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Pentagon confirms it has stopped using Anthropic's Claude as Washington presses the company

A court has upheld the supply-chain-risk designation, a Republican senator has written to the chief executive, and an IPO is expected.

Assembled by Claude from 11 sources at 10 outlets · Monday, October 5, 2026, Evening edition, 5:35 PM EDT · no human byline

Disclosure. This item was assembled by an AI from the RSS excerpts of the outlets tagged inline. No human wrote or checked it before publication. Feed selection and categories are editorial choices by Teresa Lo. Nothing here is investment advice.

What happened

The Pentagon is no longer using Anthropic's AI tools, the department told the BBC bbc.com. It "has ceased the use of Anthropic products", months after declaring the company a supply chain risk timesofindia.indiatimes.com. Defence Secretary Pete Hegseth applied that label in February and said the Pentagon would stop using the tools, after the firm refused to remove safety guardrails from them bbc.combbc.co.uk.

The designation has survived legal challenge. A federal appeals court upheld the Department of Defense's exclusion of Anthropic's Claude models in the case brought by Anthropic PBC against the US Department of War jdsupra.com, and the company lost its bid to overturn the national security designation baltimoresun.com. Judge Gregory Katsas wrote the holding, in a ruling critics argue gets free speech wrong thewellnews.com. The dispute turned on the Pentagon's demand that Anthropic drop its restrictions on military use thewellnews.com. The company has continued to expand into other federal agencies even as the Pentagon stays off Claude startupfortune.com.

Why it matters to investors

Anthropic is expected to go public despite market uncertainty and calls for an AI slowdown, with its plans muddled by questions about regulation and safety risk kimt.com. The company has told investors that the US government is a problem and that it may experience business disruptions timesofindia.indiatimes.com. Senator Bernie Moreno's letter landed ahead of what Axios calls an expected historic IPO, with valuation estimates as high as nearly $2 trillion axios.com.

The political pressure is explicit. Moreno, a Republican from Ohio, urged chief executive Dario Amodei against an "alarmist approach" and "panic-inducing commentary" on AI in a letter sent on Monday axios.com. Axios describes it as the latest example of President Trump's allies targeting Amodei axios.com, whose call for the sector to curb its development pace followed rising public anxiety about frontier safety timesofindia.indiatimes.com.

What to watch

The first question is scope. The Pentagon's exclusion is now court-backed jdsupra.combaltimoresun.com, so watch whether other departments follow or whether the civil-agency expansion continues startupfortune.com. Government contractors are reading the ruling for what a supply-chain-risk designation means for their own usage restrictions jdsupra.com.

The second is disclosure. If the company is already warning investors about government risk and possible business disruption timesofindia.indiatimes.com, that language will appear in any prospectus alongside the regulation and safety questions already flagged kimt.com. A separate class action filed by a Claude user over biometric scans adds another litigation line to track baltimoresun.com.

Sources

  1. bbc.com: Pentagon no longer using Anthropic AI tools, BBC told (2026-10-05)
  2. bbc.co.uk: Pentagon stops using Anthropic AI tools after blacklisting company, BBC told (2026-10-05)
  3. timesofindia.indiatimes.com: Pentagon stops using Anthropic's AI tools, months after declaring it a supply chain risk (2026-10-05)
  4. aiweekly.co: Pentagon Tells BBC It Has Stopped Using Anthropic's Claude | AI Weekly (2026-10-05)
  5. startupfortune.com: Pentagon Stays Off Claude Even as Anthropic Expands Into Other Agencies (2026-10-05)
  6. jdsupra.com: What Anthropic Security Ruling Means for Gov't Contractors | Blank Rome LLP - JDSupra (2026-10-05)
  7. baltimoresun.com: Claude chatbot user files class action suit against Anthropic over biometric scans - Baltimore Sun (2026-10-05)
  8. thewellnews.com: DC Circuit Gets Free Speech Wrong in Ruling Against Anthropic | The Well News (2026-10-05)
  9. axios.com: GOP senator warns Anthropic of "alarmist" approach to AI (2026-10-05)
  10. kimt.com: Anthropic expected to IPO despite market uncertainty, AI slowdown calls | News | kimt.com (2026-10-05)
  11. timesofindia.indiatimes.com: Anthropic admits to investors that the US government is a 'problem', says - The Times of India (2026-10-05)