Claude Overtakes ChatGPT in US App Store Amid Pentagon AI Dispute

Claude has knocked ChatGPT off the top of the US App Store.

Anthropic’s chatbot seized the No. 1 spot after the Pentagon moved to blacklist the company over disputed AI safeguards, as online calls to “Cancel ChatGPT” gained momentum following OpenAI’s own Department of War deal. Axios first reported the ranking shift, noting Claude’s surge came as tensions between Anthropic and the Pentagon spilled into public view.

ChatGPT slipped to No. 2 on the US free apps chart after holding the top spot for much of the month, highlighting how quickly sentiment can change in the consumer AI market.

A clash over how far AI can go

The rift escalated when the Pentagon moved to label Anthropic a “supply chain risk,” a designation that could block its technology from Department of War contracts. The breakdown came down to two safeguards the company refused to drop: barring the use of its models for mass domestic surveillance and for fully autonomous weapons.

When Anthropic held its ground, negotiations gave way to the threat of formal enforcement, setting off the chain reaction that soon reached the App Store charts.

The Pentagon finds a new partner

Hours after Anthropic’s contract unraveled, OpenAI CEO Sam Altman posted on X that the AI company had reached an agreement to deploy its models inside the Department of War’s classified network. 

OpenAI said the deal enshrines three red lines: no mass domestic surveillance, no directing autonomous weapons systems, and no high-stakes automated decision-making such as “social credit” systems. The company argued its agreement contains “more guardrails than any previous agreement for classified AI deployments, including Anthropic’s.”

The agreement also states the Department may use the systems for “all lawful purposes,” subject to existing human-control requirements and intelligence laws.

The sequence raises an obvious question: whether the Department’s position on surveillance and autonomous weapons shifted after the Anthropic rupture, or whether the contractual language differs in ways not yet publicly detailed.

From contracts to cancellations

The fallout quickly spilled online. A Reddit post urging users to “Cancel and Delete ChatGPT” racked up tens of thousands of upvotes within hours, while the Instagram account “quitGPT” gained roughly 10,000 followers as the Pentagon deal spread across social feeds.

Users began posting screenshots of canceled subscriptions and switches to Claude Pro, framing the move as a response to OpenAI’s defense agreement. As the backlash gained traction, Claude climbed the App Store rankings, ultimately overtaking ChatGPT for the top spot in the US.

While Claude climbs the charts, ChatGPT is nearing 1 billion weekly active users worldwide.