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Anthropic kept its latest AI model from UK safety evaluators as Whitehall warns of a wider tech pullback

9/9/2026

Frontier model safety evaluation depends on one prerequisite: developer cooperation with the testing body.

When Anthropic declined to give the UK's AI Safety Institute, AISI, access to its latest model, it was the first time the British agency had been excluded from an Anthropic evaluation.

Officials inside the British government now fear the decision signals a wider protectionist shift among tech groups. AISI operates at a defined point in the pre-deployment stack.

Its assessments require model access before a system reaches users. Without that access, the institute cannot perform its function.

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