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v2026.11,986 entries · CC-BY 4.0
NIKOLAI elementN6 · Mitigations and securityProposednikolai-v0.3

Access control (who may use a model and its capabilities)

Definition

Access control, for AI models, is the set of rules that decide who may use a model or its riskier capabilities and on what terms, through identity checks, trusted-access programmes, rate limits, account bans and limits on fine-tuning or weight release.

Also called: Trust-based Access, User verification, Account moderation

NIKOLAI's proposed operational definition

NIKOLAI proposes Access control as the class of deployment safeguards that decide who may use a model, or which of its capabilities, and on what terms: identity verification and know-your-customer checks, tiered or trusted-access programmes, account-level enforcement and bans, rate limits, and conditions on fine-tuning or weight release. Controls on staff access to the weights themselves are recorded under model-weight-security and security-control instead. This is an unsourced NIKOLAI editorial synthesis.

The operational definition is CASRAI's own proposal, not a definition any named organisation has agreed to. See what NIKOLAI is and is not, or browse the AI safety glossary.

Examples

Examples from published documents

  • OpenAI lists "KYC and identity verification to enable traceability" and "KYC robustness to prevent a banned actor from creating new accounts at scale (recidivism)" as example safeguards (OpenAI Preparedness Framework v2, Appendix C.1)
  • OpenAI's Trusted Access for Cyber is "an identity-gated access pathway that provides higher-risk dual-use cyber capabilities to enterprise customers, verified defenders, and other legitimate users" (GPT-5.6 deployment safety card, s.9.4.8.2)

Counter-examples

Not to be confused with

  • Restricting which employees can reach the model weights (for example two-person approval) is weight security, recorded under security-control, not user access control.

Related terms

Related AI safety terms

Terms defined under this element that are not NIKOLAI elements themselves, each as the cited document uses it. Every term is also listed in the AI safety glossary.

Know your customer (KYC)
Know your customer (KYC) is verifying the identity of people or organisations before giving them access to a model, so misuse can be traced and banned users cannot simply open new accounts. OpenAI lists KYC among its trust-based access safeguards.
Source: OpenAI Preparedness Framework v2
Trusted access
Trusted access is a programme that gives vetted users, such as verified security defenders or researchers, access to capabilities withheld from the general public. OpenAI's Trusted Access for Cyber is an identity-gated pathway of this kind.
Source: GPT-5.6 deployment safety card
Rate limiting
Rate limiting caps how much a user or account can query a model in a period. OpenAI lists rate limits as an access condition that can vary across actors, and the EU Code cites output rate limiting against weight exfiltration.
Source: OpenAI Preparedness Framework v2

Source of record

Where this definition comes from

Crosswalk

How named organisations use this concept

Every row below is a shadow mapping. A shadow row is CASRAI's own reading of a published document. No lab, evaluator or regulator named on a shadow row has declared, endorsed, or been consulted on it. That changes only when an organisation files its own Mapping Declaration.
OrganisationTheir term, as publishedMatch & verificationSource
OpenAIShadow mapping
OpenAI Preparedness Framework v2
“Claim "Trust-based Access"; example safeguards: "KYC and identity verification to enable traceability", "KYC robustness to prevent a banned actor from creating new accounts at scale (recidivism)", "Actor-policy standards, including bespoke usage policies that limit access to higher capabilities to trusted actors", "Access conditions including variation across actors, e.g., rate-limits, fine-tuning access, releasing weights"”exactEQ
confidence: high
OpenAI Preparedness Framework v2
AnthropicShadow mapping
Anthropic Responsible Scaling Policy v3.4 / Risk Report, August 2026
“ASL-3 protections include "access controls for trusted users with exemptions to classifier guards" (RSP §1); Risk Report §6.4.1 lists "tighter customer verification, limits on ZDR deployments, closer monitoring of high-trust deployment arrangements"”exactEQ
confidence: high
Anthropic Responsible Scaling Policy v3.4, effective 8 Jul 2026
Google DeepMindShadow mapping
Frontier Safety Framework v3.1
“Deployment mitigations "may include safety post-training, input/output/chain-of-thought monitoring and analysis, account moderation, jailbreak detection and patching, user verification, and bug bounties"”closeCL
confidence: medium
Google DeepMind Frontier Safety Framework v3.1
EUShadow mapping
EU GPAI Code of Practice, Safety and Security Chapter
“Measure 5.1 example: "staging the access to the model, e.g. by limiting API access to vetted users"”closeCL
confidence: medium
EU GPAI Code of Practice, Safety and Security Chapter
xAIShadow mapping
Frontier AI Framework, 30 Jun 2026
“"the full functionality of our models may be available to only a limited set of trusted parties, partners, and government agencies"”
xAI's Frontier AI Framework (30 Jun 2026) carries PDF metadata reading "Privileged/Confidential DRAFT working FRAMEWORK DOC" with no xAI statement found disambiguating draft from final; the cited URL also returned HTTP 404 (NoSuchKey) on 13 Nov 2026, so the quote is verified against the local capture only. Treat as provisional.
closeCL
confidence: medium
xAI Frontier AI Framework, 30 Jun 2026
METRShadow mapping
METR (common-elements)
“"Model Deployment Mitigations": "Access and model-level measures applied to prevent the unauthorized use of a model's dangerous capabilities."”broadBR
confidence: medium
METR (common-elements)
What do these codes mean?
exact
The source term is equivalent to this element
close
The source term is close but not equivalent to this element
broad
The source term is broader than this element
narrow
The source term is narrower than this element
none
No mapping claim — used for false-friend and declared-but-undefined rows
EQ
Equivalent
CL
Close
BR
Source is broader than the element
NR
Source is narrower than the element
FF
False friend — same or similar label, different meaning
DU
Declared but undefined by the source
UV
Unverified

Related, not mapped

Pointers that are not crosswalk claims

These sources mention this concept but do not define or map it clearly enough to count as a crosswalk row — noted here so the research is visible without overstating it as a mapping.

  • OpenAI

    Actor-level enforcement ladder in the GPT-5.6 card: additional monitoring, more restrictive blocking, a prompt to apply for trusted access, restricted frontier access, then suspension or ban; "We recognize that account-level enforcement is a coarse tool in an inherently dual-use domain" (s.9.4.7). Related, not a mapping.

    GPT-5.6 deployment safety card

Referenced across the research world

University of Cambridge logoColumbia University logoCrossref logoUniversity of Edinburgh logoHarvard University logoUniversity of Oxford logoPrinceton University logoStanford School of Medicine logoUniversity College London logoORCID logoUniversity of Cambridge logoColumbia University logoCrossref logoUniversity of Edinburgh logoHarvard University logoUniversity of Oxford logoPrinceton University logoStanford School of Medicine logoUniversity College London logoORCID logo
  • University of Cambridge logo
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  • University of Edinburgh logo
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