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September 10, 2026

Anthropic researcher quits, warns AI could cause extinction by 2030

Also: OpenAI chief scientist says no lab has solved alignment well enough to keep scaling at top speed‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ 

X-Risk Daily

Thursday 10 September 2026

Transformative AI
Anthropic researcher quits, warns AI could cause extinction by 2030
Jacob Coxon, a 27-year-old researcher who spent three years in pretraining research at OpenAI and then Anthropic, announced his resignation from Anthropic on Tuesday, 8 September 2026, in a multi-part thread on X.

Also in this issue

Transformative AI
OpenAI chief scientist says no lab has solved alignment well enough to keep scaling at top speed
Transformative AI
OpenAI's Astra model shows sharp decline in chain-of-thought monitorability, safety strategy left without backup
Transformative AI
Anthropic researcher puts odds of AI causing human extinction above 10%
Transformative AI
Anthropic files confidentially for IPO with SEC
Research
Researcher finds GPT-6 Astra reasons through multiple hidden steps without any visible chain of thought
Research
Researchers map how AI models could hide undesirable behaviour from RL training

… and 46 more in the full briefing

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