Data Architecture & Engineering June 19, 2026 · 35 min read
Knowledge Graph Cost Modeling: Build vs Buy, Layer-by-Layer Budgets, And Team Composition
Appendix B of the Knowledge Graph Practitioner's Guide. Decomposes the trilogy cost-and-benefit roll-up from Part 11c into the dollar lines a CFO can defend. Covers per-layer cost decomposition (foundation, operational, governance, agent), license-versus-infrastructure-versus-headcount splits, the build-versus-buy decision per layer, the 24-month team curve from one ontologist to a 12-person multi-discipline platform, the role-by-role compensation reality (ontologist, knowledge engineer, graph platform engineer, entity resolution engineer, governance lead, AI engineer), what ROI looks like at steady state, six failure modes in KG cost modeling, an eight-question budget diagnostic, and a tiered Do Next table for the CFO, the CDO, and the procurement officer.
#knowledge-graph#cost-modeling#build-vs-buy#team-composition