Claude climbs to No. 1 on App Store as Pentagon dispute reshapes AI app rankings

Anthropic’s AI chatbot Claude surged to the top of Apple’s U.S. App Store rankings over the weekend, overtaking OpenAI’s ChatGPT amid escalating tensions between Anthropic and the U.S. Department of Defense.

By Saturday evening, Claude had reached the No. 1 position among free apps in the United States, pushing ChatGPT to second place and Google’s Gemini further down the chart. The rapid climb followed a week of public dispute after the Trump administration moved to block federal agencies from using Anthropic’s technology.

The ranking shift comes after President Donald Trump directed federal agencies to phase out Anthropic’s products, and Defense Secretary Pete Hegseth said he would designate the company a supply-chain risk to national security. The designation would restrict U.S. defense contractors from engaging in commercial activity with Anthropic, though a temporary transition period was outlined.

Anthropic has challenged the move and signaled it would contest any formal supply-chain risk classification. The dispute stems from negotiations over how its AI models could be used by the Department of Defense, particularly concerning mass domestic surveillance and fully autonomous weapons systems.

Anthropic has stated it opposed deployment of its models for unconstrained domestic surveillance and argued that current frontier AI systems are not sufficiently reliable to independently control autonomous weapons.

While Anthropic’s government access narrowed, OpenAI announced it had reached an agreement with the Department of Defense to deploy its models within classified networks. CEO Sam Altman said the contract incorporates safeguards aligned with OpenAI’s stated safety principles, including limits on domestic mass surveillance and requirements for human oversight in the use of force.

OpenAI later published additional contract language specifying that its systems would not independently direct autonomous weapons in cases where human control is required by law or policy, and would not be used for unconstrained monitoring of U.S. persons’ private information.

The agreement triggered debate across social media platforms, with some ChatGPT users publicly announcing account cancellations and sharing screenshots of new Claude subscriptions. Others argued that both companies maintain ties to defense and intelligence sectors, pointing to Anthropic’s prior agreements involving U.S. government contractors.

According to data from analytics firm Sensor Tower, Claude was ranked No. 131 on the U.S. App Store at the end of January and hovered within the top 20 for much of February. Its ascent accelerated in recent days, moving from sixth place midweek to first by Saturday.

Anthropic said daily signups have set new internal records each day this week. The company reported that free user numbers have risen more than 60% since January, while paid subscriptions have more than doubled in 2026 to date.

The shift marks a rare reshuffling at the top of the AI chatbot rankings, where ChatGPT has largely maintained the leading position. ChatGPT, which OpenAI has said serves over 900 million weekly users globally, remains a dominant force in the consumer AI market despite the temporary App Store displacement.

Unlike previous ranking surges driven by new product launches or feature rollouts, Claude’s rise appears tied primarily to political and ethical controversy rather than a major technical update. The episode underscores how geopolitical factors and public perception are increasingly influencing competition in the AI sector.

Whether the App Store momentum translates into sustained market share gains remains uncertain. However, the latest developments demonstrate that federal procurement decisions and policy debates can quickly ripple into consumer behavior in the rapidly evolving chatbot market.