Claude Mythos Preview
- TYPE
- Model
- SIGNALS
- 12
- FIRST SEEN
- Sep 1, 2026
- LAST SEEN
- Oct 23, 2026
- ALSO KNOWN AS
- Mythos, Claude Mythos
Recent signals
- The ‘Mythos moment’ has already passed. Now comes the hard part for cybersecurity Oct 23, 2026
- BofA says it hired 1,000 contractors in Q2 to support 3,000 internal staff in patching proprietary and vendor software flaws exposed by AI models like Mythos (Hugh Son/CNBC) Oct 15, 2026
- Anthropic Cuts Live Internet Access for Internal AI Tests After Claude Exploits Injection Flaws Oct 10, 2026
- Anthropic Gives Vetted Defenders Fewer Claude Guardrails Oct 7, 2026
- GLM-5.3's open release has yet to produce major attacks despite Anthropic's warnings about its Mythos-level cyber risk, undercutting calls to ban open models (Nathan Lambert/Interconnects AI) Oct 6, 2026
- Anthropic says GLM-5.3 can autonomously build end-to-end cyber exploits, like Claude Mythos Preview, but was released without robust safeguards against misuse (Anthropic) Sep 29, 2026
- Don’t be fooled by this summer of AI hype Sep 22, 2026
- What Zero-Day Response Should Be in the Post-Mythos Era Sep 15, 2026
- Anthropic Gives EU Access to Mythos Months After Model’s Release Sep 10, 2026
- 50% of CISOs see Mythos as a sign to exit the profession Sep 9, 2026
- Black Duck Joins Project Glasswing to Strengthen AI-Era Software Security Sep 8, 2026
- Anthropic prices Fable 5.1 at $10/1M input tokens and $50/1M output tokens, unchanged from Fable 5, and cuts cache read pricing by 75% to $0.25/1M tokens (Frederic Lardinois/The New Stack) Sep 1, 2026