What Is Claude Sonnet 5.5? Faster Coding, Same API Price?

by Jacob GPTProto — Claude Sonnet 5.5 has the same API price per token as Sonnet 5. Anthropic nevertheless says the new model can cost less to finish a task…

Medium·1d ago

The AI Extinction Warning That Became a Meme

by MohamedAbdelmenem — Anthropic’s alignment lead said he doesn’t have a plan for AI alignment. Jacob Coxon quit over it. Then the internet made jokes.

Generative AI·Sep 21

Ex-Anthropic researcher warns AI could grow "smart enough to kill us"

The development of AI "doesn't look that different from say, 'Terminator,' or from science fiction films," Jacob Coxon said.

CBS News on MSN·Sep 19

The Anonymous Math Geek Who Quit Anthropic—and Became the Face of AI Safety

wsj.com·Sep 18

On Jacob Coxon’s Resignation, AI, and the Extinction of Humanity

Left Voice·Sep 16

Anthropic researcher resigns with warning about the dangers of AI development

AP News·Sep 15

AI 'doomer' PR firm worked for Jacob Coxon as he sparked furor over safety while denying third-party help: report

New York Post·1d ago

Meet Jacob Coxon, Ex-Anthropic Researcher Who Sparked A Debate On AI Safety

NDTV·Sep 19

The Anthropic Tweet: A Case Study in Manufactured Panic (Jacob Coxon)

by Matt Foster — On September 8, 2026, Jacob Coxon dropped a resignation post claiming inside knowledge from his time doing pretraining research at OpenAI…

Medium·Sep 18

Math genius Jacob Coxon resigns over AI safety fears

People creating AI sincerely believe this technology could kill us all by the end of the 2020s.” Jacob Coxon, 27 years old, who researched AI pre-training at OpenAI and Anthropic, issued this warning...

The Chosun Ilbo on MSN·Sep 18

I Asked Claude About Jacob Coxon. Its Answer Actually Terrified Me.

by Crafting-Code — I thought I was checking a strange claim. Then Claude showed me the evidence.

Write A Catalyst·Sep 16

Is AI going to kill us all by 2030?

by Raffaele Mangialardi — An ex-OpenAI and Anthropic researcher, Jacob “Harry Potter” Coxon, flew over his broom to CNN to warn humanity that labs are racing toward…

Medium·Sep 15

# Four Experts Sat Down to Debate If AI Could Kill Us All.

by Daniel Akunekwu — It started with a resignation letter. In September 2026, a researcher named Jacob Coxon left Anthropic and published a thread on X that…

Medium·5d ago

Who is Jacob Coxon, the ex-Anthropic researcher warning AI could kill us all?

The Times of India·Sep 19

AI researcher Jacob Coxon warns what may lie ahead

Cascade PBS·Sep 18

Meet Jacob Coxon: The 27-Year-Old Researcher Whose Resignation Reignited AI's Existential Debate

Jacob Coxon resigned from Anthropic after working on AI model training at OpenAI and Anthropic, saying companies were moving too quickly towards self-improving superintelligence. In an X post, Coxon...

Free Press Journal·Sep 17

Artificial Intelligence. Natural Stupidity

by Calvin Cheong — Jacob Coxon warned us about superintelligence. The internet responded by demonstrating why that might not be our most immediate problem.

Medium·Sep 15