Goldman Sachs is actively using and collaborating on Anthropic’s Claude Mythos Preview often shortened to Mythos to strengthen its cybersecurity posture.
Anthropic released Claude Mythos Preview in early April 2026 as part of its “Project Glasswing” initiative focused on cybersecurity. It’s a frontier-level AI model that shows major leaps in agentic capabilities—particularly in autonomous vulnerability discovery, exploit chaining, and security research. Anthropic has described it as capable of finding and exploiting software vulnerabilities at a level rivaling or surpassing top human researchers, including in complex, real-world systems.
The company has restricted public access due to the dual-use risks: the same tech that excels at defense could dramatically lower the bar for sophisticated cyberattacks if misused. Access is limited to select trusted partners, with some involvement from U.S. government encouragement. Goldman Sachs CEO David Solomon publicly stated that the bank is hyper-aware of Mythos’s capabilities.
The firm has access to the model. Is working closely with Anthropic and its security vendors. Is supplementing and accelerating investments in cyber and infrastructure resilience to harness frontier AI tools for defense. This follows an urgent meeting last week convened by U.S. Treasury Secretary Scott Bessent and Federal Reserve Chair Jerome Powell with major bank CEOs.
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Officials warned about the heightened cyber risks from advanced AI models like Mythos and reportedly encouraged banks including Goldman, JPMorgan, Citi, etc. to test it internally on their own systems to identify and patch weaknesses proactively. In short, Goldman is flipping the script: instead of just fearing what Mythos could do to them, they’re using it for them—to hunt for hidden vulnerabilities before attackers do.
This fits a growing pattern where frontier AI’s cyber capabilities are forcing a reckoning. Models like Mythos can autonomously scan for flaws, chain exploits, and operate with less human oversight, which is powerful for defenders but alarming for the attack surface of critical infrastructure like banks. U.S. regulators appear to be pushing a test it yourself to defend it approach rather than blanket restrictions.
Other large banks are reportedly in similar testing phases, though Goldman’s public comments from Solomon make it one of the more visible examples so far.The situation highlights the classic AI dual-use dilemma: rapid capability gains in offensive and defensive cyber tools, controlled release by labs like Anthropic, and institutions racing to adapt. It’s less AI is coming for the banks and more the banks are racing to weaponize AI for defense before the bad actors do.
JPMorgan Chase stands out as the only bank explicitly named by Anthropic as a Project Glasswing participant. The bank is actively evaluating Mythos for defensive cybersecurity across critical infrastructure. JPMorgan has described it as a unique, early-stage opportunity to test next-generation AI tools.
The firm already invests heavily in AI overall; part of its $19.2 billion tech budget includes $1.2 billion for AI initiatives and uses advanced techniques like graph neural networks for fraud detection. It reported identifying $150 million in previously undetectable fraud ring activity through such systems.
Citi is among the banks reported to be internally testing Mythos or preparing to gain access. Its CEO Jane Fraser attended the recent Treasury/Fed meeting. Citi has long emphasized AI for operational efficiency like speeding account openings and legacy system upgrades and is ramping up AI-related capex forecasts. It also highlights quantum cybersecurity threats and broader AI-driven fraud/AML integration.
Bank of America is testing Mythos internally, with CEO Brian Moynihan present at the regulators’ meeting. The bank allocates about $4 billion of its $13 billion tech budget to strategic growth areas that include AI. It deploys AI for fraud detection, dispute resolution; handling 62% of card disputes without human intervention in some cases, and broader risk functions.
Morgan Stanley is also internally testing or preparing to test the model, per reports on the Wall Street banks involved. Its CEO Ted Pick attended the meeting. Like peers, it integrates AI into compliance, risk, and operational workflows, though specific Mythos details remain limited due to the controlled nature of access.
Wells Fargo’s CEO Charlie Scharf attended the urgent meeting. While public details on its direct Mythos testing are scarcer than for JPMorgan or Goldman, it is part of the group of major banks urged by regulators to evaluate the tool for vulnerability hunting. The bank continues to prioritize AI in fraud detection, cybersecurity oversight, and technology modernization