# Anthropic appeals Pentagon’s blacklisting of its AI models in D.C. court

Digest AI · Policy & Regulation · published 2026-10-13T22:54:21Z · updated 2026-10-14T01:45:08Z

Canonical: https://digestai.news/story/anthropic-appeals-pentagons-blacklisting-of-its-ai-models-in-d-c-court

## Summary

Anthropic filed a petition on Tuesday asking a federal court in Washington, D.C. to rehear its appeal of the Pentagon’s blacklisting of its AI models. The company argues the Department of Defense’s designation as a national-security ‘supply chain risk’ was retaliation for its public stance on AI safety. The Pentagon had blocked defense contractors from using Anthropic’s technology after negotiations over military use of its Claude models collapsed in September 2025.

The Pentagon initially labeled Anthropic a risk in March, citing its refusal to allow use for mass surveillance or lethal autonomous warfare. A $200 million contract signed with the Pentagon in July 2025 preceded the breakdown. A divided D.C. Circuit panel upheld the blacklisting in September, rejecting Anthropic’s claim that the ban was arbitrary. The company’s attorneys now contend the court overlooked evidence of retaliation for its AI-safety advocacy. Neither side has commented beyond the filing.

## Key points

- Anthropic filed a petition on Tuesday to rehear its appeal of the Pentagon’s blacklisting of its AI models
- Pentagon blocked defense contractors from using Anthropic’s technology after negotiations over Claude models collapsed in September 2025
- Anthropic argues the blacklisting was retaliation for its public stance on AI safety and refusal to allow military use for surveillance or lethal warfare

## Why it matters

The case could set a precedent for how the U.S. government regulates AI companies that refuse military use for controversial applications.

## Sources

1. [Anthropic urges court in Washington, D.C. to rehear appeal of Pentagon blacklisting](https://cnbc.com/2026/10/13/anthropic-wants-court-in-dc-to-rehear-appeal-of-pentagon-blacklist-.html) (CNBC Technology, 2026-10-13)
2. [Anthropic Asks D.C. Circuit to Rehear Pentagon Supply-Chain Risk Case](https://unite.ai/anthropic-asks-d-c-circuit-to-rehear-pentagon-supply-chain-risk-case) (Unite.AI, 2026-10-14)

Part of the developing story: [Pentagon Anthropic AI Dispute Saga](https://digestai.news/thread/anthropic-warns-pentagon-dispute-could-cost-billions) (3 stories)

## Cite

Digest AI, "Anthropic appeals Pentagon’s blacklisting of its AI models in D.C. court", 13 October 2026, https://digestai.news/story/anthropic-appeals-pentagons-blacklisting-of-its-ai-models-in-d-c-court

---

Written by Digest AI's editorial model from the linked sources; the sources are the record. Headlines, digests and key points are written by Digest AI and may be quoted with a link to the story page. Linked articles belong to their publishers. Terms: https://digestai.news/terms#reuse
JSON: https://digestai.news/story/anthropic-appeals-pentagons-blacklisting-of-its-ai-models-in-d-c-court.json