MS-2.3: AI system performance is evaluated regularly

AI system performance is evaluated regularly sits in the measure surface, and NIST AI 600-1 rates it high. Continuous evaluation against benchmarks + drift detection. For teams shipping LLM and agentic features, a control like this is only as good as the evidence that it was actually tested - an unverified control is a finding waiting for an auditor.

Penaxtra turns this NIST AI 600-1 obligation into testable, recurring evidence: scheduled scans and posture checks produce findings tied to MS-2.3, and the append-only audit log records what was tested and when, which is exactly what an assessor asks for. Every relevant finding is created with the NIST AI 600-1 MS-2.3 identifier already attached, so it lands in the audit-evidence pack mapped to the control rather than as a screenshot someone has to translate later. Where the same weakness touches another framework, the cross-framework overlap means one finding satisfies several control cells at once.

Findings for MS-2.3 carry the NIST AI 600-1 MS-2.3 identifier and cross-map to the related controls in the other five frameworks Penaxtra covers.