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AI Governance Institute

Practical Governance for Enterprise AI

Anthropic

Claude Mythos 5

v5 · frontier · Released June 9, 2026

Use with Caution

Updated June 27, 2026

Reinstated June 27 for Project Glasswing members only (~100 orgs). No general enterprise access. Selection criteria not published.

Enterprise guidance

Mythos 5 is available exclusively to organizations in the Project Glasswing cohort — a restricted set of national security and critical infrastructure operators. Before attempting any API access, confirm your organization is on the approved list through official Anthropic enterprise channels. Non-approved access attempts will be rejected. If you believe your organization qualifies, contact Anthropic directly; there is no public application process.

Active Compliance Flags2

government_restrictionHighJune 27, 2026

Access controlled by US Commerce Dept. Only Project Glasswing members approved. No published selection criteria or appeal process.

Primary source →
partner_access_onlyMediumJune 27, 2026

Export license required for organizations not on the approved Glasswing list.

Primary source →

Data handling

Default data retention

Governed by individual Glasswing member agreement

Zero-retention available

Yes

Via: Governed by Glasswing member agreement terms

API data used for training

No

Anthropic does not train on enterprise API customer data.

GDPR Data Processing Agreement

Available

HIPAA Business Associate Agreement

Not available

Primarily a national security model — HIPAA use cases are unlikely to qualify for Glasswing access.

Data residency options

US-based; governed by Glasswing member agreement

Vendor compliance certifications

SOC 2 Type II (Anthropic)ISO 27001 (Anthropic)Government-grade security controls per Glasswing agreement

Key use restrictions

  • Access: Glasswing member organizations only — no general enterprise procurement pathway
  • Prohibited: autonomous weapons systems development
  • Prohibited: domestic surveillance applications
  • No public AUP — restrictions are governed by individual Glasswing member agreements
  • Non-eligible organizations: contact Anthropic enterprise team to inquire about access pathways

Safety documentation

Model card not published
System card not published
Red-team report not published

No public safety documentation available for Mythos 5. Safety evaluations exist but are restricted to approved Glasswing members. Lack of public transparency is a primary criticism from AI governance advocates and researchers.

Related governance resources

Governance controls

National Security and Dual-Use AI Risk Assessment

Establish a risk assessment process for AI systems and AI research activities that could constitute dual-use technology — with applications in both commercial and national security or weapons contexts — addressing BIS export control obligations, ITAR compliance for defense applications, dual-use research of concern protocols, and foreign adversarial misuse monitoring.

AI Vendor Due Diligence

Assess AI vendors against security, governance, and compliance criteria before procurement and at defined intervals during the vendor relationship.

Vendor Safety Commitment Verification

Establish a workflow to verify that AI vendors are honoring their published safety commitments, voluntary pledges, and contractual safety obligations on an ongoing basis — not only at the time of procurement.

AI Vendor Concentration Risk Assessment

Assess and manage the risk arising from organizational dependence on a small number of AI vendors or underlying model providers, and maintain a documented supplier redundancy posture to ensure operational continuity if a primary vendor is disrupted, suspends access, or becomes unavailable.

Procurement-Stage AI Governance Conditions

Establish governance preconditions that must be satisfied before AI system procurement is completed, including binding contractual commitments to governance standards, whistleblowing policy requirements, and internal approval workflow triggers that make governance a dependency of procurement rather than a post-hoc addition.

Playbook guides

Status history

June 12, 2026· green to red

US Commerce Department export control directive suspended all access.

June 27, 2026· red to yellow

Partial reinstatement for Project Glasswing members. General access remains suspended.

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