UK AI Safety Institute (AISI)

UK government body conducting pre-deployment evaluations of frontier AI models for cyber, biosecurity, and autonomy risks. Frequently runs joint evaluations with the US AISI (NIST AISIC).

Notable outputs

• Frontier AI Trends Report (aisi.gov.uk/frontier-ai-trends-report) — finds that “the length of cyber tasks that models can complete unassisted is doubling roughly every eight months.” Load-bearing data point for Class 2 (APT campaigns).
• Pre-deployment evaluation of upgraded Claude 3.5 Sonnet (aisi.gov.uk/blog/pre-deployment-evaluation-of-anthropics-upgraded-claude-3-5-sonnet) — the canonical “two AISIs evaluating one model upgrade” reference for Class 4 (model-version regression).

Relationship to standards

AISI evaluations are not regulation; they are advisory and inform the Anthropic Responsible Scaling Policy and equivalent vendor commitments tracked by METR’s Common Elements of Frontier AI Safety Policies.

See Also

• Agentic AI Threat Classes — 2026 Expansion — primary citation
• Apollo Research — peer organization