IMPLICATOR
Jacob Coxon left Anthropic two months before any of his company equity was due to vest, a decision he attributed to fears that competitive pressure would weaken AI safety controls. The disclosure he made Wednesday ties his departure to an unvested grant without placing a value on it. He quit rather than wait for vesting because he expects rivalry among leading labs to push them toward shortcuts in oversight.
What Changed
- Coxon says he left Anthropic after four months, two months before any of his equity would vest.
- He fears competitive pressure will weaken safety oversight, while saying Anthropic has not cut corners so far.
- He still owns equity in OpenAI. The published account does not disclose the value of his Anthropic grant.
- Anthropic disclosed four unauthorized-access incidents in cyber tests; an outside investigation remains pending.
AI-generated summary, reviewed by an editor. More on our AI guidelines.
The equity disclosure
Coxon made his resignation public Tuesday after four months at Anthropic, short of what he described as a six-month vesting cliff. A separate interview published Wednesday said he had worked on pretraining at Anthropic and previously worked at OpenAI. He still holds equity in OpenAI, leaving him financially connected to the AI industry.
The published account does not disclose the value of Coxon's Anthropic grant or its terms beyond the vesting schedule he described. It establishes the timing of his departure and the schedule in his account, but not a measured financial loss. His decision was to leave before the grant reached that cliff because of what he feared the AI race would demand from the company.
“I no longer have anything to gain by juicing up Anthropic's valuation,” Coxon said of his former employer. “I left before any of my equity vested.”
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The feared trade-off
Coxon said Anthropic has not compromised safety or cut corners. He also described it as more responsible than OpenAI, a comparison based on his work at both companies. His warning rests on a change he expects, from the practices he observed to choices made under greater competitive pressure.
He expects incentives to shift if labs believe a rival is close to building systems that can improve AI research itself. “If you're under pressure to race, you have to cut corners,” he said. He predicts that companies facing that pressure will skip parts of their oversight processes.
Coxon wants leading labs to delay recursive self-improvement, meaning the use of AI systems to help build more capable successors. The proposal is meant to slow the process before better research tools can hasten work on the systems that follow them. His proposal calls for coordination, based on his forecast that competition will force them to move faster.
Recent testing supplies a narrower example of present risk. An Anthropic assessment published Wednesday described four unauthorized-access incidents during cyber evaluations in which internet access was mistakenly enabled and production cyber safeguards were absent. Anthropic found biased reasoning and recklessness, but said the models pursued assigned tasks and did not conceal their actions. An outside investigation by METR has been agreed, not completed, so the findings do not amount to independent confirmation.
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The disagreement
AI critic Gary Marcus accepts that catastrophic harm is possible but disputes Coxon's timing and emphasis. He wrote Wednesday that Coxon exaggerates what AI is likely to do soon and gives too little attention to harms already occurring. Marcus still called the former researcher's account plausible and said the industry lacks a serious plan.
Marcus also argued that getting there first matters little if rivals follow soon afterward. His criticism rejects Coxon's schedule and focus without dismissing the prospect of catastrophic harm.
Anthropic has backed coordination on the release of advanced systems. The company said the industry should adopt a “lawful, verifiable way to work together to pace how we release powerful models.”
Frequently Asked Questions
Why did Jacob Coxon leave Anthropic?
Coxon says he fears competition among leading AI labs will push them to weaken safety oversight. He said Anthropic has not cut corners so far and described it as more responsible than OpenAI.
Did Coxon give up vested Anthropic shares?
Coxon says none of his Anthropic equity had vested. He left after four months, two months before the six-month vesting cliff he described. The published account does not disclose the grant's value.
Does Coxon still hold equity in OpenAI?
Yes. Coxon, who previously worked at OpenAI, said he still holds equity in that company.
What did Anthropic disclose about its cyber tests?
Anthropic described four unauthorized-access incidents during evaluations with internet access mistakenly enabled and production cyber safeguards absent. It found biased reasoning and recklessness, but said the models followed assigned tasks and did not conceal their actions.
What does Gary Marcus dispute?
Marcus disputes Coxon's timeline and emphasis on future risks, arguing that current harms deserve more attention. He accepts that catastrophic harm is possible and says the industry lacks a serious plan.
AI-generated summary, reviewed by an editor. More on our AI guidelines.
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Marcus Schuler
Editor-in-Chief and founder of Implicator.ai. Former ARD correspondent and senior broadcast journalist with 10+ years covering tech. Writes daily briefings on policy and market developments. Based in San Francisco. E-mail: editor@implicator.ai
