Both OpenAI and Anthropic said earlier this month they are working with the U.S. and U.K. governments to bolster the safety and security of their commercial large language models in order to make them harder to abuse or misuse.
In a pair of blogs posted to their websites Friday, the companies said for the past year or so they have been working with researchers at the National Institute of Standards and Technology’s U.S. Center for AI Standards for Innovation and the U.K. AI Security Institute.
That collaboration included granting government researchers access to the companies’ models, classifiers, and training data. Its purpose has been to enable independent experts to assess how resilient the models are to outside attacks from malicious hackers, as well as their effectiveness in blocking legitimate users from leveraging the technology for legally or ethically questionable purposes.
OpenAI’s blog details the work with the institutes, which studied the capabilities of ChatGPT in cyber, chemical-biological and “other national security relevant domains.”That partnership has since been expanded to newer products, including red-teaming the company’s AI agents and exploring new ways for OpenAI “to partner with external evaluators to find and fix security vulnerabilities.”
OpenAI already works with selected red-teamers who scour their products for vulnerabilities, so the announcement suggests the company may be exploring a separate red-teaming process for its AI agents.
According to OpenAI, the engagement with NIST yielded insights around two novel vulnerabilities affecting their systems. Those vulnerabilities “could have allowed a sophisticated attacker to bypass our security protections, and to remotely control the computer systems the agent could access for that session and successfully impersonate the user for other websites they’d logged into,” the company said.
Initially, engineers at OpenAI believed the vulnerabilities were unexploitable and “useless” due to existing security safeguards. But researchers identified a way to combine the vulnerabilities with a known AI hijacking technique — which corrupts the underlying context data the agent relies on to guide its behavior — that allowed them to take over another user’s agent with a 50% success rate.
Between May and August, OpenAI worked with researchers at the U.K. AI Security Institute to test and improve safeguards in GPT5 and ChatGPT Agent. The engagement focused on red-teaming the models to prevent biological misuse — preventing the model from providing step-by-step instructions for making bombs, chemical or biological weapons.
The company said it provided the British government with non-public prototypes of its safeguard systems, test models stripped of any guardrails, internal policy guidance on its safety work, access to internal safety monitoring models and other bespoke tooling.
Anthropic also said it gave U.S. and U.K. government researchers access to its Claude AI systems for ongoing testing and research at different stages of development, as well as its classifier system for finding jailbreak vulnerabilities.
That work identified several prompt injection attacks that bypassed safety protections within Claude — again by poisoning the context the model relies on with hidden, malicious prompts — as well as a new universal jailbreak method capable of evading standard detection tools. The jailbreak vulnerability was so severe that Anthropic opted to restructure its entire safeguard architecture rather than attempt to patch it.
Anthropic said the collaboration taught the company that giving government red-teamers deeper access to their systems could lead to more sophisticated vulnerability discovery.
“Governments bring unique capabilities to this work, particularly deep expertise in national security areas like cybersecurity, intelligence analysis, and threat modeling that enables them to evaluate specific attack vectors and defense mechanisms when paired with their machine learning expertise,” Anthropic’s blog stated.
OpenAI and Anthropic’s work with the U.S. and U.K. comes as some AI safety and security experts have questioned whether those governments and AI companies may be deprioritizing technical safety guardrails as policymakers seek to give their domestic industries maximal freedom to compete with China and other competitors for global market dominance.
After coming into office, U.S. Vice President JD Vance downplayed the importance of AI safety at international summits, while British Labour Party Prime Minister Keir Starmer reportedly walked back a promise in the party’s election manifesto to enforce safety regulations on AI companies following Donald Trump’s election. A more symbolic example: both the U.S. and U.K. government AI institutes changed their names this earlier year to remove the word “safety.”
But the collaborations indicate that some of that work remains ongoing, and not every security researcher agrees that the models are necessarily getting worse.
Md Raz, a Ph.D student at New York University who is part of a team of researchers that study cybersecurity and AI systems, told CyberScoop that in his experience commercial models are getting harder, not easier, to jailbreak with each new release.
“Definitely over the past few years I think between GPT4 and GPT 5 … I saw a lot more guardrails in GPT5, where GPT5 will put the pieces together before it replies and sometimes it will say, ‘no, I’m not going to do that.’”
Other AI tools, like coding models “are a lot less thoughtful about the bigger picture” of what they’re being asked to do and whether it’s malicious or not, he added, while open-source models are “most likely to do what you say” and existing guardrails can be more easily circumvented.
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