# Provider comparison — EM-TEC-06 Claude and Grok agree that reserved WM-SFT-016 is the correct reliability commitment family; Metric Definition owns reusable formula semantics, WM-MAT-008 owns observations, WM-ACT-004 owns Service and WM-ECO-006 owns contractual obligations and remedies. Both preserve explicit missing-data states, immutable policy succession, version-scoped budgets and a strict internal-SLO versus contractual-SLA boundary. Grok narrows the completion in two important ways. One reserved identity family must contain separate consistency boundaries for slow-changing policy, high-volume evaluations and effective-dated coverage bindings. Evaluable commitments attach only to identified WM-ACT-004 Service subjects. The identifier-unassigned User Journey remains a non-authoritative composition view and cannot receive a successful evaluation until identity, membership, aggregation and effective dating exist. The reconciled disposition completes WM-SFT-016 without a new identifier and retains User Journey as an unassigned candidate. Publication remains held on base publication, Metric Definition and User Journey allocation, aggregation and exclusion-event contracts, source pins, package acceptance and unexecuted fixtures.