Anthropic
Claude Mythos 5
v5 · frontier · Released June 9, 2026
Updated July 16, 2026
The U.S. government has partially reversed the June 12 export control suspension, restoring access under an approved-partner framework. Access remains restricted rather than generally available, so a YELLOW designation is appropriate.
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
Access controlled by US Commerce Dept. Only Project Glasswing members approved. No published selection criteria or appeal process.
Primary source →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
YesVia: Governed by Glasswing member agreement terms
API data used for training
NoAnthropic does not train on enterprise API customer data.
GDPR Data Processing Agreement
AvailableHIPAA Business Associate Agreement
Not availablePrimarily 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
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
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
Assess AI systems and research with both commercial and national security or weapons applications. Address BIS export controls, defense-related ITAR duties, dual-use research protocols, and monitoring for foreign adversarial misuse.
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
Check whether vendors honor published safety commitments, voluntary pledges, and contractual duties throughout the relationship.
AI Vendor Concentration Risk Assessment
Assess dependence on a small number of AI vendors or underlying model providers. Document supplier alternatives supporting continuity if a primary provider fails, suspends access, or becomes unavailable.
Procurement-Stage AI Governance Conditions
Set governance conditions that must be met before AI procurement finishes. Include contractual standards, whistleblowing policies, and internal approval triggers.
Playbook guides
How do we ensure third-party AI vendors meet our standards?
Review AI vendors for model transparency, data handling, bias testing, and contractual liability for their outputs.
What are our obligations under emerging AI regulations?
Map AI compliance requirements across EU rules, US executive orders, SEC guidance, and sector regulations.
Status history
July 16, 2026· red to yellow
The partial reversal removes the active government suspension that warranted RED status, but access is limited to approved partners rather than general availability. This aligns with the YELLOW criterion of partner-only or restricted access.
July 2, 2026· yellow to red
An export-control directive issued by the US government mandates suspension of access for foreign nationals, constituting an active government suspension. This directly satisfies the RED criteria and warrants an immediate status escalation from YELLOW.
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.