Meta and Microsoft Reduce Employee Use of Claude AI Tools

Meta and Microsoft have begun to significantly reduce employee use of Anthropic’s Claude AI as they shift focus towards their own proprietary coding tools, according to a report from The Information on October 5. This change prioritizes internal spending and workforce processes, while customer access to Claude through Microsoft’s platforms remains unaffected. The transition highlights the growing need to manage AI expenditures as coding assistants become essential in software operations. Both companies continue to be major clients of Anthropic, but they are also competitors, reflecting a convergence in AI investment and product strategies. Microsoft had initially estimated that internal spending on Anthropic technology would surpass $1 billion annually, but this figure has decreased by over a third following management's directive for employees to limit their use of Claude and to increasingly adopt Microsoft tools like GitHub Copilot and OpenAI frameworks. Reports indicate that Microsoft’s monthly AI spending limits have been reduced from $100,000 per employee to around $10,000 in most cases. It is important to clarify that these limits are spending ceilings and do not represent actual employee expenditures. This budget reduction has reportedly disappointed some engineers who previously had more freedom to explore various models. Additionally, the decrease in internal funding does not mean Microsoft is withdrawing Claude from client-facing products, as reports suggest that client spending on Anthropic models via Microsoft’s enterprise platforms continues to grow. At Meta, the number of Claude Code users has reportedly dropped from approximately 60,000 earlier this year to about 30,000, with layoffs contributing to this decline. However, the primary reason is attributed to Meta’s strategic shift towards its own AI solutions, including MetaCode and Muse Code, which are based on Meta’s proprietary models. MetaCode has over 30,000 internal users, while Muse Code has more than 6,000. Meta began external testing of Muse Code with clients in August. Despite the reduction in users, Meta reportedly spent over $105 million on Claude Code within a 28-day period, indicating that fewer users do not necessarily mean reduced spending. For cybersecurity teams, the shift to different coding assistants does not eliminate risks associated with automated access to sensitive files and commands. Previous analyses by Cybersecurity News identified vulnerabilities in Claude Code that could enable unauthorized execution and API key theft, which Anthropic addressed before public disclosure. Microsoft’s tools have faced similar issues, such as the RoguePilot vulnerability, which allowed malicious commands in a GitHub Issue to take over repositories. These incidents underscore the importance of enforcing strict permissions, using trusted project settings, and thoroughly evaluating AI-generated actions. Anthropic’s reported annualized revenue pace of $65 billion indicates continued demand for its services. This reduction in employee usage reflects budget tightening and increased competition rather than a complete disengagement from Claude.