Anthropic Ships Sonnet 5 With Agentic Safety and Pricing Details
1 July 20265 min read
AI
Anthropic Says US Directive Forced It to Suspend Fable 5 and Mythos 5
Anthropic says it disabled access to two frontier models after a US export-control directive, while disputing that a narrow jailbreak finding should justify recalling a deployed commercial system.
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Anthropic said on 12 June that the US government had issued an export-control directive requiring the company to suspend access to Claude Fable 5 and Claude Mythos 5. The company said the restriction applied broadly to customers and to foreign-national employees, and that access to its other models was not affected.
According to Anthropic, the directive cited national-security authorities but did not provide detailed written evidence of the specific concern. The company said its understanding was that the government had become aware of a possible method for bypassing safeguards in Fable 5.
Anthropic disputed the proportionality of the action. It said the reported issue appeared narrow rather than universal, and argued that comparable vulnerability-discovery capability is widely available from other deployed models and routinely used by security defenders.
The statement turns a model-safety dispute into a governance test. Anthropic said it supports a government power to block unsafe deployments, but argued that such action should follow a transparent statutory process grounded in technical facts.
Sourcing note: This article is based on Anthropic's public statement. The government directive itself was not published with the statement, so Anthropic's characterisation of the government's reasoning is attributed to the company.
Why It Matters
Frontier-model oversight is moving from voluntary safety frameworks into direct state intervention. The central question is no longer whether governments should have emergency powers over high-risk AI releases, but what process and evidence threshold should apply before those powers disrupt commercial access at scale.
Primary Sources
Our sourcing: Cedar S. Insights provides source-led editorial analysis. Reported company, institutional and regulatory claims are attributed to their original sources unless stated otherwise.
Corrections: If a material factual error is identified, Cedar S. Insights will update the relevant article and preserve the distinction between the corrected statement and supporting evidence.
Topics
AnthropicFable 5Mythos 5AI SafetyExport Controls