Alongside the model announcement, Anthropic launched Project Glasswing — a collaborative effort involving major technology companies and organisations to apply these capabilities for defensive purposes.
What is Project Glasswing?
Project Glasswing brings together Amazon Web Services, Apple, Broadcom, Cisco, CrowdStrike, Google, JPMorganChase, the Linux Foundation, Microsoft, NVIDIA, and Palo Alto Networks. The initiative aims to use Claude Mythos Preview to scan and strengthen critical software infrastructure that underpins banking, healthcare, power grids, logistics, and other essential systems.
Anthropic is providing up to $100 million in usage credits for the model and donating $4 million to open-source security organisations. Over 40 additional groups responsible for critical software have also been granted access during this early phase.
The goal is to give defenders a head start in an era where AI can dramatically lower the barrier for finding and exploiting software weaknesses.
Capabilities shown by Claude Mythos
According to Anthropic’s statement, Claude Mythos has autonomously discovered thousands of high-severity vulnerabilities, including zero-days in every major operating system and web browser. Some examples include:
- A 27-year-old flaw in OpenBSD that could allow remote crashes of critical systems
- A 16-year-old vulnerability in FFmpeg that had evaded millions of automated tests
- Multiple chained vulnerabilities in the Linux kernel enabling full system takeover
The model significantly outperforms Anthropic’s previous top model, Claude Opus 4.6, on cybersecurity benchmarks.Importantly, Anthropic emphasised that Claude Mythos remains in preview and is not generally available. Access is currently restricted to Project Glasswing partners and selected organisations working on critical infrastructure.
Why Claude Mythos is not being released publicly
Anthropic has decided not to make Claude Mythos generally available at this time. The company cited the potential risks if such powerful cyber capabilities were to fall into the wrong hands, stating that the dangers of misuse are obvious.
Instead, the model is being deployed through a new initiative called Project Glasswing. This collaborative effort involves major technology companies and organisations including Amazon Web Services, Apple, Broadcom, Cisco, CrowdStrike, Google, JPMorganChase, the Linux Foundation, Microsoft, NVIDIA, and Palo Alto Networks.
Under Project Glasswing, these partners will use Claude Mythos to scan and strengthen their own critical software infrastructure and open-source components. Anthropic is committing up to $100 million in usage credits and an additional $4 million in direct donations to open-source security organisations.
Real-life applications and objectives of Project Glasswing
The primary objective of Project Glasswing is to give defenders a significant advantage in the emerging AI-driven cybersecurity landscape. Anthropic emphasised that the same capabilities that make the model dangerous for attackers also make it highly effective for proactively finding and fixing vulnerabilities in essential systems such as banking, healthcare, power grids, and logistics networks.
The company stated that it has already shared some technical details of patched vulnerabilities on its Frontier Red Team blog and plans to release more information within 90 days, including best practices and recommendations for the industry.
Anthropic also mentioned ongoing discussions with US government officials regarding the model’s capabilities and the broader national security implications of advanced AI in cybersecurity.
Claude Mythos Availability and future plans
Claude Mythos Preview remains in preview status and is currently accessible only to Project Glasswing participants and a select group of over 40 organisations responsible for critical software infrastructure. Anthropic indicated that it will gradually expand access under strict safety controls and is developing additional safeguards for future models.
The announcement underscores Anthropic’s position that responsible development and deployment of powerful AI models require close collaboration between frontier AI developers, technology companies, open-source communities, and governments.
Why this matters now
Cybersecurity experts have long warned that AI will make cyberattacks faster, cheaper, and more sophisticated. Project Glasswing represents one of the first large-scale attempts by the industry to turn the same powerful AI capabilities into a defensive advantage.
Anthropic stated that the work is expected to continue for many months, with plans to share learnings, best practices, and recommendations for the broader industry and governments.
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