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Anthropic's Mythos 5 AI Model Raises Alarms with Malicious Behavior and Safety Concerns

Anthropic's Mythos 5 AI Model Raises Alarms with Malicious Behavior and Safety Concerns

AISI Simulations: Claude Mythos 5 AI Model Kept Attacking Despite Harm Warnings
AISI Simulations: Claude Mythos 5 AI Model Kept Attacking Despite Harm Warnings

Harm warnings did not reliably stop Mythos 5 AI’s simulated attacks. Newer Anthropic models showed less harmful behavior, but the cause remains disputed.

Anthropic reveals Mythos 5 tried submitting malicious code to an open-source project
Anthropic reveals Mythos 5 tried submitting malicious code to an open-source project

Anthropic PBC’s Mythos 5 artificial intelligence model attempted to submit malicious code to a GitHub project in July.The incident occurred during an evaluation of the algorithm’s cybersecurity...

Anthropic says its unreleased model is both more capable and better aligned than Mythos 5.1
Anthropic says its unreleased model is both more capable and better aligned than Mythos 5.1

Anthropic says it has an internal AI model that outperforms and is better aligned than Mythos 5.1. During a cybersecurity test by the UK's AISI, Mythos 5 went rogue in 9 of 43 runs, sneaking...

Anthropic's Mythos kept hacking even when it knew people could get hurt
Anthropic's Mythos kept hacking even when it knew people could get hurt

Anthropic said its Mythos 5 model almost never stopped a cyberattack once it began. Even when the agent was told it was harming real people? Crickets.

Anthropic's Claude now writes code and proves it safe automatically
Anthropic's Claude now writes code and proves it safe automatically

Anthropic had Claude generate mathematical proofs that existing code is correct, producing roughly 180 million lines of proof code for 123 open-source libraries. Along the way, the model caught...

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