If no deal is reached, Anthropic will off-board from military use smoothly so warfighters continue to be supported.

This promise is conditional: if no deal with the US Department of Defense/War is reached, Anthropic will off-board smoothly so that warfighters continue to be supported. TRUE: no deal was reached, and Anthropic carried out a planned transition. It must have kept its services running through a wind-down or transition period and cooperated in migrating to alternatives, with no reported disruption to military users caused by Anthropic. MOSTLY TRUE: the transition was orderly, with minor reported hiccups. MOSTLY FALSE: off-boarding happened but with significant disruptions attributable to Anthropic. FALSE: Anthropic cut off access abruptly or withdrew support in a way that dated reports show disrupted military operations. If a deal was reached, the claim cannot be resolved. It also cannot be resolved if the government itself terminated use abruptly before any Anthropic-led off-boarding.

Set before the research began.

1. E1 Pentagon stops using Anthropic tools after blacklisting company, BBC told BBC · 5 October 2026

   “The Pentagon "has ceased the use of Anthropic products", the department official said in a statement on Monday.”

2. E2 Pentagon stops using Anthropic tools after blacklisting company, BBC told BBC · 5 October 2026

   “Multiple people familiar with the matter told the BBC that as recently as last week Anthopic's Claude model was still being used by the department in research, analysis and intelligence gathering as well as in military operations against Iran.”

3. E3 Anthropic sues the Pentagon after being labeled a threat to national security | Fortune Fortune · 9 March 2026

   “Pete Hegseth, the secretary of war, had said that the military would stop using Claude “immediately,” but also that there would be a six-month phaseout of the technology to prevent a disruption in critical operations.”

4. E4 Anthropic sues the Pentagon after being labeled a threat to national security | Fortune Fortune · 9 March 2026

   “just hours after the Anthropic-Pentagon negotiations fell apart, OpenAI struck its own deal with the Department of War, seemingly agreeing to provide its models without the contractual limitations Anthropic had been insisting upon”

5. E5 DOD poised to move all classified AI workloads off Anthropic by October DefenseScoop · 11 September 2026

   “I’d say about 90% has transitioned. All of the Maven Smart Systems or Palantir work has been transitioned months ago, and we’re on track to get it done by the end of the month,”

6. E6 The Pentagon Couldn't Unplug Claude: The Paradox of Korea's "Sovereign Defense AI" futures.re.kr · 13 October 2026

   “On Monday, October 5, the department answered in one line: it “has ceased the use of Anthropic products.””

7. E7 The Pentagon Couldn't Unplug Claude: The Paradox of Korea's "Sovereign Defense AI" futures.re.kr · 13 October 2026

   “Multiple sources said Claude had been used as recently as the previous week, for research, analysis and intelligence gathering, and in military operations against Iran.”

8. E8 The Pentagon Couldn't Unplug Claude: The Paradox of Korea's "Sovereign Defense AI" futures.re.kr · 13 October 2026

   “The deadline of late August passed. The department’s October statement did not explain the delay, and neither the Pentagon nor Anthropic, which declined to comment, has confirmed the BBC’s account of continued use.”

No deal was reached: OpenAI signed its own agreement with the Department of War hours after the Anthropic negotiations broke down (E4). The phase-out was set by the government, which announced a six-month phaseout (E3). DefenseScoop reported that about 90% of classified workloads had transitioned off Anthropic (E5), and the Pentagon later said it had stopped using Anthropic products (E1, E6). Reports that Claude was still in use into late September suggest Anthropic did not cut off access abruptly (E2, E7), but none of the evidence describes Anthropic leading a transition or helping move users to alternatives, and Anthropic declined to comment (E8). The evidence therefore cannot show whether Anthropic carried out the smooth off-boarding it promised.