01What Is Claude Mythos AI and How Does It Work?

Claude Mythos AI is a powerful new artificial intelligence model built by Anthropic. It is designed to find weaknesses in software, operating systems, financial systems, and web browsers. The model can not only find those weaknesses but also exploit them.

This makes it a serious tool for cybersecurity — both for defense and for potential attacks.

Anthropic revealed the model earlier this month. Developers who tested it said it was "strikingly capable at computer security tasks." The model has already exposed multiple security vulnerabilities in critical systems. Because of this, Anthropic has not released it to the public.

Instead, they gave access to a small group of companies and security experts.

02Main Features of Claude Mythos AI

  • Cybersecurity focus: It specializes in finding and exploiting vulnerabilities in core IT systems.
  • Zero-day discovery: It can uncover security holes that were previously unknown.
  • Controlled access: Only select partners like Amazon Web Services, CrowdStrike, Microsoft, and Nvidia have early access through Project Glasswing.
  • Government coordination: Anthropic is working with banks and finance ministries to test and patch systems before any public release.
  • Staged release: A less powerful version of the model was released to help the security community build defenses.

03How to Get Started with Claude Mythos AI

As of now, Claude Mythos AI is not available to the public. Anthropic has only given access to a small group of trusted partners. Here are the steps if you want to be involved:

  1. Become a partner in Anthropic’s Project Glasswing. This is currently limited to major tech companies and financial institutions.
  2. If you run a bank or critical infrastructure, contact Anthropic directly to request early testing access.
  3. Follow the news and updates from the UK’s AI Security Institute for independent reports on the model’s capabilities.
  4. Stay informed about any future public release announcements from Anthropic.

04How to Use Claude Mythos AI for Security Testing

In this episode, Julian Goldie explains that the main use of Claude Mythos AI is for security testing. The model is given access to systems to find vulnerabilities before bad actors can exploit them. For example, the UK’s AI Security Institute tested a preview version.

They found it could find security holes in undefended environments.

Top bankers are being given direct access to test their own systems. The goal is to find out what Claude Mythos would do to their infrastructure so they can patch it. This is similar to how ethical hackers work, but the AI can do it much faster and at scale.

Julian notes that the model is not dramatically better than Anthropic’s previous model, Claude Opus 4, but it still represents a major step forward.

05Results, Tests, and Comparisons Shown in the Episode

The only independent report on Claude Mythos AI comes from the UK’s AI Security Institute. Their testing showed that the model can exploit systems with weak security posture. However, they noted it was not dramatically better than Claude Opus 4, Anthropic’s previous top model.

Some cybersecurity experts are pushing back on the level of panic, saying the wider industry hasn’t tested it properly yet.

Julian also compares this to OpenAI’s decision in February 2019 to hold back GPT-2. That model was also cited as too dangerous to release. Some critics then said it was about generating hype.

The difference this time is the scale of institutional response: finance ministers and central bank governors are publicly discussing Claude Mythos AI. The Bank of England governor warned about increased cybercrime risk. The US Treasury raised the issue with major banks.

06Tips, Limits, and Mistakes to Avoid with Claude Mythos AI

  • Don’t panic: The model is not publicly available yet. Overreacting can lead to poor decisions.
  • Understand the limits: The UK’s AI Security Institute said it wasn’t dramatically better than previous models. Not all fears are backed by data.
  • Watch for copycats: Another US AI company may release a similar model without safeguards. This could be more dangerous.
  • Stay educated: Most business owners don’t know this conversation is happening. Being aware gives you a competitive advantage.
  • Don’t ignore security: Even if you don’t use Claude Mythos, AI-powered attacks will affect the tools and platforms you rely on.

07Who Is Claude Mythos AI For and Why It Matters

Claude Mythos AI is primarily for large organizations with critical infrastructure: banks, hospitals, governments, and big tech companies. It matters because AI models are getting better at finding system vulnerabilities. Julian points out that the same AI that helps write emails can also, in a more powerful form, find gaps in systems you use every day.

For business owners, the takeaway is to pay attention. The security implications of AI will show up in the software you use, the platforms you sell on, and the tools you rely on. Staying educated about real developments, like Claude Mythos AI, is a competitive advantage.

As Julian says, finance ministers are not usually alarmed by AI models — something has shifted.