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§ I · Domain OUT · Control 15 of 16
Control
OUT-15
Edition
v.1.3
Status
Public review

OUT · Output Integrity & Supply Chain

OUT-15Model availability & continuity

Model availability is treated as a supply-chain risk: each agent documents a continuity posture, fallback path, trigger conditions, and permitted degraded behavior, for loss of its primary foundation model.

Model availability is treated as a supply-chain risk, not an assumption. For each agent, the organization documents what happens when the primary foundation model becomes unavailable, whether through provider outage, version deprecation or sunset, or a regulatory or government directive that withdraws access. The continuity posture specifies the fallback path (an alternate model assured under OUT-16, graceful degradation, or a safe-stop that invokes the kill switch under ACT-07), the conditions that trigger it, and the behavior the agent is permitted to exhibit while degraded. Loss of model is entered in the Agent Risk Register (GOV-03), the posture is recorded in the Behavior Charter (GOV-02), and it is exercised during incident-response drills (MON-07).

Table OUT-15.1 · Maturity criteria · v.1.3

L1 to L5 · the lowest level in scope caps the agent
L1Ad hoc

Controls exist informally; documentation is incomplete; no consistent review.

L2Documented

Controls are written down; ownership is assigned; review cadence is defined.

L3Operated

Controls are followed in practice; evidence is collected; deviations are tracked.

A documented continuity posture exists for every production agent; a failover or safe-stop has been exercised in a drill or live event within the documented cadence: at least annually and on material change; loss of model is represented in the Agent Risk Register.

L4Measured

Control effectiveness is measured against documented thresholds; trends are reported.

L5Continuously Improved

Controls evolve based on incident learning; maturity gains are evidenced over time.

The v1.3 edition publishes a control-specific criterion at L3 (Operated). The other levels apply the general ladder to this control; see the maturity ladder.

Evidence an assessor asks for

  1. E.1

    A documented continuity posture exists for every production agent.

  2. E.2

    A failover or safe-stop has been exercised in a drill or live event within the documented cadence: at least annually and on material change.

  3. E.3

    Loss of model is represented in the Agent Risk Register.

Table OUT-15.2 · Framework mappings

5 of 7 frameworks carry a control-level reference
NIST AI RMFMANAGE 3NIST AI Risk Management Framework 1.0
ISO/IEC 42001·ISO/IEC 42001:2023 · Artificial intelligence management system
OWASP LLM Top 10LLM03OWASP Top 10 for Large Language Model Applications
SOC 2 (TSC)A1.2, A1.3AICPA Trust Services Criteria for SOC 2 Type II
EU AI ActArt. 25EU AI Act · Regulation (EU) 2024/1689
MITRE ATLAS·MITRE ATLAS · Adversarial Threat Landscape for AI Systems
SingaporeMAIGF Trusted Development and DeploymentSingapore Model AI Governance Framework / AI Verify / PDPA

Mappings are directional: meeting this control evidences but does not by itself satisfy the external requirement. A middle dot means no control-level reference is published at this edition; see the crosswalk.

Related controls and terms

Cite this control

Human Intelligence. HI-AAF v1.3, OUT-15 Model availability & continuity. Public review edition, July 2026. https://humanintel.net/standard/out/out-15

Edition v.1.3 · July 2026 · Public review · Markdown · PDF

https://humanintel.net/standard/out/out-15

Notice

HI-AAF v1.3 is an independent framework published by Human Intelligence. It is not affiliated with NIST, ISO, AICPA, or any government or accreditation body. The framework is offered openly for review during the current draft cycle.