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NIST AI RMF vs SSDF SP 800-218: how they differ, side by side

How NIST AI RMF and SSDF SP 800-218 differ: what each is, who owes it, when it applies and who enforces it.

NIST AI RMFVoluntary framework
SSDF SP 800-218Voluntary framework; no government-wide attestation since Jan 2026
Checked21 Oct 2026

01 / Side by side

NIST AI RMF and SSDF SP 800-218, side by side

NIST AI RMFSSDF SP 800-218
What it isvoluntary frameworkfederal standard
JurisdictionUnited States (federal)United States (federal)
Legal forceVoluntary frameworkVoluntary framework; no government-wide attestation since Jan 2026
StatusPublished standardPublished standard
Applies from26 Jan 20233 Feb 2022
Who owes itAny organization that designs, develops, deploys, evaluates or uses AI systems and chooses to adopt it; no one is required to by the framework itself.Software producers of all kinds, and in particular vendors whose software is used by US federal agencies.
EnforcementNone; voluntary. Contracts, agency policies or other laws may reference it.None directly; voluntary. Agencies may require SSDF practices or an attestation by contract, and false contract representations can create False Claims Act exposure.

02 / NIST AI RMF

What NIST AI RMF requires

AI-specific. It addresses risks such as validity, reliability, safety, security, accountability, explainability, privacy and harmful bias in AI systems across their lifecycle.

  1. 01GOVERN: set policies, accountability, culture and third-party controls for AI risk across the organization.
  2. 02MAP: establish each AI system's context, purpose, categorization, benefits, costs and impacts.
  3. 03MEASURE: select metrics and test, evaluate, verify and validate AI systems for trustworthiness characteristics; track risks over time.
  4. 04MANAGE: prioritize and treat AI risks, manage third-party risk, and monitor deployed systems with response and recovery plans.
  5. 05Optionally build use-case or sector profiles that select and tailor the subcategories that matter.

03 / SSDF SP 800-218

What SSDF SP 800-218 requires

SP 800-218A (July 2024) is an SSDF community profile for generative AI and dual-use foundation models; it adds tasks such as protecting training data and model weights and tracking model provenance.

  1. 01Define security requirements, roles, training and toolchains for software development (PO).
  2. 02Protect code, releases and provenance data from tampering and unauthorized access (PS).
  3. 03Design securely, review and test code, and configure software secure by default (PW).
  4. 04Identify, analyze and fix vulnerabilities and their root causes after release (RV).
  5. 05Apply practices on a risk basis and document how each is met.

Optional evidence · where Planisphere fits

Keep a record anyone can check

When your team meets a duty, Planisphere can seal the event it reports as a receipt.

01 · Your teamRecord the event

A disclosure shown, a review signed, a model change approved: the event your system reports.

02 · PlanisphereSeal it

The event becomes a sealed receipt, dated and attributed to whoever is signed in.

03 · AnyoneCheck it

Paste the receipt into Verify. No account or key.

A record supports your compliance evidence process. It is not a legal finding or a certification. Systems that call Planisphere's gate API can also hold or refuse an action before it runs.

SOURCES

Go back to the source

PRIMARY
AI Risk Management Framework

National Institute of Standards and Technology

PRIMARY
GUIDANCE
NIST AI RMF Playbook

NIST Trustworthy and Responsible AI Resource Center

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Related: NIST AI RMF: the full guide · SSDF SP 800-218: the full guide · SSDF SP 800-218 vs NIST AI RMF · All comparisons