# EM-PRD-04 provider comparison

Claude and Grok agree on reuse of WM-ACT-036 and WM-KNW-009, narrow completion of reserved WM-ACT-022 as Experiment Run, immutable study-scoped design releases, and an identifier-unassigned reusable cross-study design. Grok clarified that Finding still needs instance identity through existing claim/evidence bases and that Attempt needs a stable run-subordinate key.

The frozen audit accepted the identity decision and found twenty-one artifact defects. The revised artifacts now type design pins, separate draft and frozen manifests, give each attempt a frozen manifest and declared delta, record result access, distinguish post-hoc instances from pre-access revisions, type deviations and coverage, separate orchestration from scientific conclusions, preserve immutable histories through links/events, compute access ceilings, align design criteria authority, constrain timestamps and manifest reproducibility, and record actor plus authority on transitions.

No new model or runtime identifier is allocated. Registry allocation, base/relation reconciliation, the unassigned Evidence Artifact dependency, package conversion and live verification remain publication holds.