
On June 14, the U.S. Department of Commerce imposed export controls on Anthropic’s Claude Fable 5 on the grounds of national security. The authorities said that if the jailbreak vulnerability can be patched, “Fable can be brought back online.” On the same day, Polymarket opened a prediction market, “When will Claude Fable 5 be restored for U.S. users?” The probability of restoration by July 1 is priced at 75%.
As of the time of this report on June 14, 2026, the market-quoted confirmation probabilities for Polymarket’s prediction market are collective estimates by market participants (not official confirmation results):
Restored by June 15: market-quoted probability 12%
Restored by June 22: market-quoted probability 56%
Restored by July 1: market-quoted probability 75%
As of the time of this report, the total confirmed transaction volume on this Polymarket bet is approximately $400,000. Polymarket probabilities reflect the collective probability estimates of market participants, not confirmation statements by Anthropic, the U.S. government, or any official institution; the figures may change with new information such as Anthropic’s patch progress or government decisions.
David Sacks, co-chair of the President’s Council of Advisors on Science and Technology, issued the following confirmation statement on June 14, 2026:
Reason for removal: A “highly trusted partner that is trusted by both Anthropic and the U.S. government” found a jailbreak method capable of breaking through guardrails during testing of Fable 5 (i.e., technical means that induce the model to bypass built-in safety restrictions) and reported it to the government.
Conditions for re-enablement: Sacks said that after Anthropic patches this jailbreak vulnerability, it can let “Fable go back online.”
As of the time of this report on June 14, 2026, Anthropic has not published a timeline for completing the jailbreak patch or any confirmed patch status; the formal legal basis for the export controls and complete applicability rationale have not been released in official form.
The following are positions that Anthropic has already publicly confirmed (Anthropic’s viewpoint, not independently verified facts):
· This jailbreak is “narrow and not widespread,” not a broadly reproducible security threat
· The same vulnerability exists in other already-public models such as OpenAI GPT-5.5
· Those other models have not been subject to export controls
Anthropic believes that if the standard of “recalling an entire commercial model due to a single narrow jailbreak” applies across the whole industry, it effectively freezes the deployment of all frontier models
Anthropic’s statements regarding the same vulnerability existing in GPT-5.5, and the reasons why the export controls target Fable 5 specifically, are still positions held by each side, and cannot be independently verified.
According to reports, the U.S. Department of Commerce used “national security” as the basis to impose export controls and prevent foreigners from accessing Claude Fable 5. The direct trigger was that a cooperation partner trusted by both sides found a jailbreak method capable of breaking through guardrails during testing and reported it to the government. The formal legal basis for the export controls and the complete justifications for applicability have not been made public in official documents.
No. 75% is the collective price set by Polymarket prediction market participants for the outcome “restored by July 1” as of the time of this report on June 14, 2026. It reflects market expectations rather than official confirmation. This number may change with Anthropic’s patch progress or the U.S. government’s decisions.
As of the time of this report on June 14, 2026, Anthropic has not published a timeline for completing the jailbreak vulnerability patch, nor any confirmed patch status. The re-enablement premise proposed by David Sacks is that the patch is successful, but the specific verification mechanism and review process have not been disclosed.
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