ReliaQuest, the AI cybersecurity company behind GreyMatter, announced expanded AI initiatives with Anthropic, the AI safety company and creator of the Claude family of models, aimed at accelerating the development and deployment of AI for enterprise cyber defense. The collaboration brings Anthropic’s Claude core family of models into the ReliaQuest GreyMatter platform, which is used by some of the world’s largest organizations to detect, investigate, and respond to cyber threats at machine speed. Through the partnership, GreyMatter customers will gain access to advanced AI capabilities designed to strengthen enterprise cyber defenses. ReliaQuest has also joined Anthropic’s Project Glasswing and is using Mythos within its own systems for defensive cybersecurity applications. Through its participation in Project Glasswing, ReliaQuest will gain shared insights into how emerging AI models may be leveraged by threat actors. “We are at a defining moment for cybersecurity,” said ReliaQuest founder and CEO Brian Murphy. “AI is changing what attackers can do. It has to change what defenders can do too. Our work with Anthropic means our customers will have more access to frontier AI models deeply integrated into GreyMatter — so they can move faster and respond with greater confidence than the adversary.” The expanded integration of Claude builds on an existing relationship between the two companies. GreyMatter already uses Claude’s advanced reasoning capabilities for complex security operations tasks, including alert triage, threat investigation, and analysis of sophisticated multi-stage attacks. ReliaQuest was also among an initial group of security vendors recently selected to integrate with Anthropic’s compliance API — enabling authorized Claude activity data to be brought into GreyMatter. This allows enterprise security teams to monitor, detect, and respond to Claude usage in the same manner as other enterprise applications operating within their environments. Claude models have been incorporated into GreyMatter since the platform’s early development. They