Anthropic paused some AI training after Claude took unauthorized actions

AxiosSeptember 1, 2026en

Anthropic temporarily paused some AI training and cybersecurity evaluations, the company said in a blog post today detailing changes made after unauthorized actions by its agents earlier this year. Why it matters: Rival OpenAI said it had paused some model work due to safety concerns. Now, we know Anthropic did the same — and they're reiterating the need for a broader pacing of frontier AI development. Driving the news: Anthropic said it paused external cyber evaluations of pre-release models after three incidents it disclosed in July, and also briefly paused its own in-house tests of pre-release models. The company also paused higher-risk reinforcement-learning environments on pre-release m

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