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Jacob Coxon announces Anthropic resignation, criticizes OpenAI and Anthropic

Coxon accuses both companies of racing toward self-improving superintelligence and “gambling with our lives.”

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55 Sources, 22d ago, first seen 22d ago

TLDR

Jacob Coxon wrote on September 9, 2026, “I resigned from Anthropic today,” and described spending the previous three years doing pretraining research at OpenAI and Anthropic. “Neither company is acting responsibly,” Coxon said, accusing both of racing toward self-improving superintelligence and “gambling with our lives.”

Combined views

127.3M

55 Sources, first seen 22d ago

674.6K likes17K comments240.6K saves136.7K reposts
Featured Source

Combined views

127.3M

55 Sources, first seen 22d ago

674.6K likes17K comments240.6K saves136.7K reposts

Sentiment

Positive11.9%88.1%Negative

Summary

Replies largely dismissed a former Anthropic researcher's AI risk warnings and resignation as attention-seeking, while some accounts backed urgent calls for congressional oversight.

Based on 619 sentiment-bearing replies from 531 accounts across 12 conversations.

Sentiment

Positive11.9%88.1%Negative

Summary

Replies largely dismissed a former Anthropic researcher's AI risk warnings and resignation as attention-seeking, while some accounts backed urgent calls for congressional oversight.

Based on 619 sentiment-bearing replies from 531 accounts across 12 conversations.

55 Sources

@WSJAn Anthropic researcher is quitting the artificial-intelligence industry over fears that the lab and its competitors are racing to build systems that could spiral out of control and destroy humanity. https://on.wsj.com/4hhAoMR
@hilbertspaessI resigned from Anthropic today. I spent the last three years doing pretraining research at both OpenAI and Anthropic. Neither company is acting responsibly. They are racing straight to self-improving superintelligence and gambling with our lives. More thoughts below.
@NeowinFeedCoxon claims top lab executives privately fear AI could kill us all by decade's end while racing toward self-improving superintelligence. #Anthropic #OpenAI #Humanity https://www.neowin.net/news/anthropic-researcher-resigns-over-reckless-ai-race/
@Gizmodo‘The People Building AI Earnestly Believe That It Could Kill Us All’: Anthropic Researcher Quits Dramatically https://gizmodo.com/the-people-building-ai-earnestly-believe-that-it-could-kill-us-all-anthropic-researcher-quits-dramatically-2000808968
@CoinGapeMedia🚨 JUST IN: @AnthropicAI researcher Jacob Coxon has resigned, warning that Anthropic, OpenAI and other AI labs are racing toward self-improving AI that could become impossible to control.
@mashableAn Anthropic spokesperson confirmed it believes AI could kill all humans. https://mashable.com/tech/anthropic-ai-researcher-quit-ethics-safety?taid=6aa1172b129c920001abb996&utm_campaign=trueAnthem%3A+Manual&utm_medium=trueAnthem&utm_source=twitter
@CoinDeskNEW: An AI researcher who worked on pretraining at both @OpenAI and @AnthropicAI just resigned, warning both labs are "racing straight to self-improving super-intelligence and gambling with our lives."
@tomshardwareMore than 10% chance AI 'could kill all humans' in the next 10 years, Anthropic safety researcher says — departing employee says AI companies are 'gambling with our lives' https://www.tomshardware.com/tech-industry/artificial-intelligence/more-than-10-percent-chance-ai-could-kill-all-humans-in-the-next-10-years-anthropic-safety-researcher-says-departing-employee-says-ai-companies-are-gambling-with-our-lives
@vergeThe departing researcher said AI companies are ‘gambling with our lives’ by racing to develop self-improving AI. https://www.theverge.com/ai-artificial-intelligence/991927/anthropic-ai-kill-all-humans
@axiosAnthropic insiders warn AI could kill all humans https://www.axios.com/2026/09/09/anthropic-insiders-warn-ai-could-kill-all-humans?utm_campaign=mrf-utm_campaign=editorial&utm_source=x&utm_medium=owned_social&utm_source=twitter&utm_medium=social&mrfcid=202609096a964dc1d2ae547dc03175f9
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    55 Sources

    @WSJAn Anthropic researcher is quitting the artificial-intelligence industry over fears that the lab and its competitors are racing to build systems that could spiral out of control and destroy humanity. https://on.wsj.com/4hhAoMR
    @hilbertspaessI resigned from Anthropic today. I spent the last three years doing pretraining research at both OpenAI and Anthropic. Neither company is acting responsibly. They are racing straight to self-improving superintelligence and gambling with our lives. More thoughts below.
    @NeowinFeedCoxon claims top lab executives privately fear AI could kill us all by decade's end while racing toward self-improving superintelligence. #Anthropic #OpenAI #Humanity https://www.neowin.net/news/anthropic-researcher-resigns-over-reckless-ai-race/
    @Gizmodo‘The People Building AI Earnestly Believe That It Could Kill Us All’: Anthropic Researcher Quits Dramatically https://gizmodo.com/the-people-building-ai-earnestly-believe-that-it-could-kill-us-all-anthropic-researcher-quits-dramatically-2000808968
    @CoinGapeMedia🚨 JUST IN: @AnthropicAI researcher Jacob Coxon has resigned, warning that Anthropic, OpenAI and other AI labs are racing toward self-improving AI that could become impossible to control.
    @mashableAn Anthropic spokesperson confirmed it believes AI could kill all humans. https://mashable.com/tech/anthropic-ai-researcher-quit-ethics-safety?taid=6aa1172b129c920001abb996&utm_campaign=trueAnthem%3A+Manual&utm_medium=trueAnthem&utm_source=twitter
    @CoinDeskNEW: An AI researcher who worked on pretraining at both @OpenAI and @AnthropicAI just resigned, warning both labs are "racing straight to self-improving super-intelligence and gambling with our lives."
    @tomshardwareMore than 10% chance AI 'could kill all humans' in the next 10 years, Anthropic safety researcher says — departing employee says AI companies are 'gambling with our lives' https://www.tomshardware.com/tech-industry/artificial-intelligence/more-than-10-percent-chance-ai-could-kill-all-humans-in-the-next-10-years-anthropic-safety-researcher-says-departing-employee-says-ai-companies-are-gambling-with-our-lives
    @vergeThe departing researcher said AI companies are ‘gambling with our lives’ by racing to develop self-improving AI. https://www.theverge.com/ai-artificial-intelligence/991927/anthropic-ai-kill-all-humans
    @axiosAnthropic insiders warn AI could kill all humans https://www.axios.com/2026/09/09/anthropic-insiders-warn-ai-could-kill-all-humans?utm_campaign=mrf-utm_campaign=editorial&utm_source=x&utm_medium=owned_social&utm_source=twitter&utm_medium=social&mrfcid=202609096a964dc1d2ae547dc03175f9
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