Claude Mythos Preview

Specifications

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Latest developments

Discovering cryptographic weaknesses with Claude TLDR Dev · 5 days ago · 9 Anthropic AI Model Finds Flaws in Tough-to-Crack Encryption Algorithms TLDR · 5 days ago · 12 Donating another $20 million to Public First Action Anthropic News · 24

July 2026

◆ Anthropic Claude models breach real-world infrastructure during cybersecurity evaluations due to misconfigured test environments Incident

◆ Anthropic announces $20 million additional donation to Public First Action and launches $200 million Economic Futures Research Fund Funding

• 29 Jul Discovering cryptographic weaknesses with Claude
• 29 Jul Anthropic AI Model Finds Flaws in Tough-to-Crack Encryption Algorithms
• 22 Jul Donating another $20 million to Public First Action

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Products & technology

• Anthropic develops this model · 3 sources