The compliance tooling stack spans 14 categories with annual costs from EUR 20,000 (OSS) to EUR 345,000 (commercial). Infrastructure costs range from EUR 16,000 to EUR 80,000 annually. External advisory budgets cover legal counsel, notified body engagement, fairness evaluation, and AISDP audit. Ten-year evidence storage is surprisingly inexpensive at cold storage rates.
The EU AI Act compliance tooling stack spans 14 categories from pipeline orchestration and experiment tracking through AI governance platforms and learning management systems. The commercial stack costs EUR 80,000 to EUR 345,000 annually, while the OSS-maximised stack costs EUR 20,000 to EUR 60,000, with the trade-off being internal hosting, maintenance, and integration effort that commercial tools provide as managed services. The AI governance platform category at EUR 20,000 to EUR 80,000 has no mature open-source equivalent, with Credo AI and Holistic AI as the leading commercial options. Infrastructure costs range from EUR 16,000 to EUR 80,000 annually for a medium organisation, driven by monitoring compute, evidence storage, PMM data storage from inference logs, evaluation compute for fairness and sentinel testing, CI/CD pipeline compute, and disaster recovery replication. External advisory costs include AI Act specialist legal counsel at EUR 15,000 to EUR 50,000 initially, notified body engagement at EUR 20,000 to EUR 60,000 per system, independent fairness evaluation at EUR 10,000 to EUR 30,000, and AISDP audit at EUR 15,000 to EUR 40,000 per cycle. The ten-year evidence retention obligation under Article 18 is financially modest at approximately EUR 2,400 cumulative for cold storage, though the operational challenge of maintaining retrievable archives over a decade represents the real cost risk.
The recommended tooling stack spans fifteen categories, with annual licence costs for a medium organisation ranging from EUR 80,000 to 345,000 for a fully commercial stack or EUR 20,000 to 60,000 for an open-source-maximised stack.
The recommended tooling stack spans fifteen categories, with annual licence costs for a medium organisation ranging from EUR 80,000 to 345,000 for a fully commercial stack or EUR 20,000 to 60,000 for an open-source-maximised stack. The estimates assume the medium organisation profile; small organisations will typically use fewer tools, and large organisations will negotiate enterprise pricing.
Pipeline orchestration tools such as Dagster Cloud or Prefect Cloud cost EUR 5,000 to 25,000 annually, with Dagster OSS, Apache Airflow, or Prefect OSS as free alternatives requiring self-hosting. Experiment tracking through managed MLflow or Weights and Biases costs EUR 6,000 to 30,000, with the model registry included. Data validation via Great Expectations Cloud costs EUR 5,000 to 15,000. Data versioning through DVC or LakeFS costs up to EUR 10,000 with free community editions available. Policy engines such as Styra DAS for managed Open Policy Agent cost EUR 8,000 to 30,000, with OPA open-source as the free alternative.
Infrastructure costs are driven by three factors: the compute required for monitoring and evaluation, the storage required for evidence retention, and the networking required for multi-region deployment.
Infrastructure costs are driven by three factors: the compute required for monitoring and evaluation, the storage required for evidence retention, and the networking required for multi-region deployment. Total annual infrastructure cost for a medium organisation ranges from EUR 16,000 to 80,000.
Monitoring compute for Prometheus, alert evaluation, and dashboard serving costs EUR 3,000 to 12,000, driven by the number of metrics, scrape frequency, and retention period. Evidence storage for the governance artefact registry and immutable audit logs costs EUR 2,000 to 8,000 using cold storage migration after the first year. PMM data storage for inference logs, monitoring metrics, and operator records is the largest infrastructure component at EUR 5,000 to 30,000, driven by inference volume, log detail, and retention period.
Six categories of external advisory service may be required depending on the organisation's internal capability, the system's regulatory pathway, and the complexity of the deployment.
Six categories of external advisory service may be required depending on the organisation's internal capability, the system's regulatory pathway, and the complexity of the deployment.
External legal counsel from an AI Act specialist costs EUR 15,000 to 50,000 for the initial compliance programme design, FRIA methodology, provider status analysis, and contract review, with an annual retainer of EUR 5,000 to 20,000 for ongoing regulatory guidance. Notified body engagement for systems requiring third-party under Article 43, covering remote biometric identification systems and Annex I safety component systems, costs EUR 20,000 to 60,000 per system.
No mature open-source equivalent exists. Credo AI and Holistic AI are the leading commercial options at EUR 20,000 to EUR 80,000 annually.
PMM data storage at EUR 5,000 to EUR 30,000 annually, driven by inference volume, log detail, and retention period. This exceeds monitoring compute, evidence storage, and evaluation compute.
Not the storage cost, which is negligible. The risk is the operational effort of ensuring evidence remains retrievable and archive infrastructure remains functional over a decade.
Fourteen categories from pipeline orchestration through AI governance platforms, with total annual costs of EUR 20,000 to EUR 345,000 depending on commercial versus OSS approach.
OSS requires internal hosting and maintenance effort but costs EUR 20,000 to EUR 60,000. Commercial provides managed services at EUR 80,000 to EUR 345,000. Only AI governance platforms lack a mature OSS equivalent.
Legal counsel (EUR 15,000 to EUR 50,000 initially), notified body engagement (EUR 20,000 to EUR 60,000 per system), fairness evaluation, AISDP audit, sandbox participation, and GPAI negotiation support.
Approximately EUR 2,400 cumulative storage for a medium-complexity system at cold storage rates. The real cost is maintaining retrievable archives over a decade.
Security scanning through Snyk or Semgrep Team costs EUR 5,000 to 20,000, with Semgrep OSS and Trivy OSS providing free alternatives. Secret detection via GitGuardian costs EUR 3,000 to 10,000, with detect-secrets and git-secrets as free options. Monitoring and observability through Datadog or Grafana Cloud costs EUR 10,000 to 50,000, the largest tooling line item, with Grafana plus Prometheus providing the free open-source stack. Feature flags through LaunchDarkly cost EUR 6,000 to 25,000, with Unleash and Flagsmith as open-source alternatives. Progressive delivery through Argo Rollouts and GitOps through ArgoCD are both open-source at zero licence cost.
AI governance platforms such as Credo AI or Holistic AI cost EUR 20,000 to 80,000 and have no equivalent open-source alternatives at comparable maturity. Learning management systems for AI literacy cost EUR 5,000 to 20,000, with Moodle as the open-source alternative. Evidence management through Confluence, SharePoint, or custom solutions costs EUR 2,000 to 10,000.
The cost differential between commercial and open-source stacks is substantial. The trade-off is operational: open-source tools require internal hosting, maintenance, and integration effort that commercial tools provide as managed services. For small organisations, the open-source stack with a managed hosting layer such as a single Kubernetes cluster is typically the most cost-effective approach. For large organisations, the commercial stack reduces operational burden and provides enterprise support.
Evaluation compute for fairness evaluation, sentinel testing, and cascade testing costs EUR 3,000 to 15,000, driven by evaluation frequency, dataset size, and the number of models in the portfolio. CI/CD pipeline compute for governance gates, policy evaluation, and documentation generation costs EUR 2,000 to 10,000, driven by pipeline execution frequency and the number of stages. Disaster recovery for evidence replication and backup verification adds EUR 1,000 to 5,000.
The ten-year evidence retention cost under Article 18 is less expensive than organisations often assume. For a medium-complexity system generating approximately 50 GB of evidence per year, the cumulative ten-year storage cost at cold storage rates of approximately EUR 0.004 per GB per month for AWS Glacier or equivalent is approximately EUR 2,400. This is negligible compared to other cost categories. The real cost risk lies in the operational effort of ensuring evidence remains retrievable and the archive infrastructure remains functional over a decade. Storage cost projections should account for Year 1 evidence volume, annual evidence growth from PMM data and governance gate records, and storage tier migration moving evidence older than twelve months to cold archive storage to reduce ongoing cost.
Independent fairness evaluation costs EUR 10,000 to 30,000 per system where internal fairness assessment capability is insufficient or where external validation is desired for credibility with deployers or competent authorities. External audit of the AISDP costs EUR 15,000 to 40,000 per audit cycle, typically conducted annually or biennially as an independent review of the documentation and compliance programme.
Regulatory sandbox participation costs EUR 10,000 to 25,000 in internal effort for preparation and participation in a national regulatory sandbox programme under Article 57. GPAI provider negotiation support from a specialist advisor on exercising Article 25(3) information rights costs EUR 5,000 to 15,000 per engagement, relevant for organisations integrating foundation models into high-risk applications where the GPAI provider's disclosures are insufficient.
CTO of Standard Intelligence. Leads platform engineering and contributes to the PIG series technical content.
