The Trump administration is pressing Anthropic to eliminate every jailbreak that can bypass its safety guardrails before it re-releases its "Claude Fable 5" model, WIRED reported on June 17, 2026. Officials have made an unbreakable set of guardrails a condition of any re-release, but security experts say that is technically impossible.
June 2026 · National Security vs. Frontier AI
The White House Wants Anthropic to Block Every Jailbreak. Experts Say That's Impossible.
The Trump administration won't allow a rerelease of Claude Fable 5 unless its guardrails are guaranteed uncircumventable. Anthropic — and security experts — say perfect resistance can't exist. The standoff continues.
1st
time the US government has forced a major AI company to pull a model
0
customers with access — Anthropic halted all access after export controls
1M
token context window of the frontier Fable 5 model
The demand vs. the reality
What the government wants — and what every AI provider can actually deliver.
Govt demand
Block 100% of jailbreaks
vs
Technical reality
"Perfect resistance" is unachievable
How it unfolded
Jun 9
Fable 5 (guarded) + Mythos 5 (partners only) launch
→
Jun 13–14
US imposes export control over jailbreak risk; Anthropic halts all access
→
Jun 17–18
Talks continue at Commerce Dept; restrictions still not lifted
Government's caution
Jailbreaks could unlock Mythos-level cyber, biological and chemical capabilities. NSA is said to have confirmed they exist — a national security concern too serious to release into the wild.
Anthropic's rebuttal
Reported jailbreaks are "narrow and non-universal." Defense-in-depth layers many protections; similar capabilities exist in other models and are routinely used defensively.
With both sides effectively conceding that complete blocking is technically difficult , this unprecedented clash is becoming the test case for how national-security rules apply to publishing frontier AI models.
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