Finance
Anthropic Plans to Provide Mythos Access to European Banks Soon, Sources Say
Published by Global Banking & Finance Review®
Posted on April 21, 2026
3 min readLast updated: April 21, 2026
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Anthropic plans to roll out its powerful Mythos AI model to European banks imminently, following initial access granted to U.S. institutions. Regulators globally are sounding alarms about its cybersecurity risks and demanding strict oversight.
Anthropic plans to provide Mythos access to European banks soon, sources say
By Saeed Azhar, Jeffrey Dastin and Mathieu Rosemain
Anthropic's Expansion of Mythos AI Model Access
NEW YORK/PARIS, April 21 (Reuters) - Anthropic plans to provide access to its Mythos AI model to European banks soon, three people familiar with the matter said, as global banks scramble to test the technology after large U.S. banks were given initial access.
Cybersecurity Concerns and Regulatory Warnings
Mythos is viewed by cybersecurity experts as posing significant challenges to the banking industry and its legacy technology systems, prompting a series of warnings from regulators and policymakers gathered at last week's International Monetary Fund spring meeting in Washington. A string of U.S. banks have so far been given access to Mythos - while the rest of the industry tries to catch up.
Expansion to European and UK Banks
Anthropic aims to expand Mythos AI access to European and UK banks, among other organizations, one of the people familiar with the matter told Reuters.
Security Checks and Rollout Timeline
That process involves checks to ensure the rollout is done securely, the person said, speaking on condition of anonymity.
Another person said the access could be provided to European banks within days, while the first person said the rollout might take days or weeks. Bloomberg previously reported that Anthropic would release Mythos to UK financial institutions soon.
Anthropic did not immediately respond to a Reuters request for comment.
Initial Access and Industry Adoption
Anthropic initially provided access to the model to partners in its Project Glasswing initiative and about 40 additional organisations that build or maintain critical software infrastructure.
JPMorgan Chase, which is part of Glasswing, was the only bank Anthropic has publicly said has access, although Bank of America has been part of Glasswing since the start and has been testing the Mythos technology internally, according to a source familiar with the matter.
Other U.S. banks have more recently said they have been given access to Mythos, as regulators rush to examine the cybersecurity risks the new artificial intelligence model raises.
Calls for Equal Access in the Banking Sector
German central bank chief Joachim Nagel called on Tuesday for all institutions to have access to Anthropic's artificial intelligence model Mythos to keep the playing field even and to avoid it being misused.
(Reporting by Saeed Azhar, Jeffrey Dastin and Mathieu Rosemain in Paris; editing by Megan Davies and Franklin Paul)
Key Takeaways
- •Anthropic’s Mythos AI, capable of autonomously discovering and chaining software vulnerabilities, has triggered urgent regulatory scrutiny in the U.S., Europe and Asia, prompting closed‑door briefings and risk assessments across the banking sector. (letsdatascience.com)
- •Access to Mythos has been tightly controlled under the Project Glasswing initiative—limited to select tech and financial partners such as JPMorgan, Goldman Sachs and other U.S. firms—while European banks are expected to gain access within days or weeks. (channelnewsasia.com)
- •The ECB and other regulators are already intensifying oversight of Mythos deployments—issuing questionnaires, on‑site audits, and demanding robust governance frameworks under the emerging EU AI Act and high‑risk rules. (roic.ai)
References
Frequently Asked Questions about Anthropic plans to provide Mythos access to European banks soon, sources say
1What is Anthropic's Mythos AI model?
Mythos is an artificial intelligence model developed by Anthropic, designed for advanced banking and finance applications.
2Which banks have initial access to Mythos?
Initial access was given to major US banks, including JPMorgan Chase and Bank of America, through Anthropic's Project Glasswing.
3When will European banks receive access to Mythos?
According to sources, Anthropic plans to provide Mythos access to European banks within days or weeks.
4Why are regulators concerned about Mythos in banking?
Regulators have issued warnings about the cybersecurity challenges Mythos poses to legacy banking systems.
5What steps is Anthropic taking for a secure rollout?
Anthropic is conducting security checks to ensure the safe introduction of Mythos AI to European and UK banks.
