Definition
Third-party model vendor pushes a model update — minor version bump, weight refresh, RLHF re-tune — and the operator deploys the new variant without local re-validation of safety properties.Distinct from
- GER-309 — Operator did not re-measure after vendor model update → this code. Vendor itself measured harm and shipped → GER-309.
Documented case
OpenAI — Sycophancy in GPT-4o: what happened and what we're doing about it (April 2025)
vendor
Tags
eu-ai-act