After clearing Anthropic’s Mythos 5 for a trusted few, the US government may free Fable 5 next

Anthropic's most powerful public AI model, Fable 5, may be back online as soon as next week, according to Axios, marking a possible end to a blackout that left developers stranded mid-task and scrambling for replacements.

The model has been dark for 15 days, ever since the US government ordered Anthropic to pull it over cybersecurity fears. Two sources told Axios that talks were expected to continue through the weekend, with the administration's limits potentially lifting in the coming days.The signs of a thaw are already showing. On Friday, the Commerce Department let Anthropic restore access to Mythos 5, its strongest cybersecurity model, for a small set of trusted users—cyber defenders and infrastructure providers who operate critical systems.

Commerce Secretary Howard Lutnick wrote to Anthropic that the company "has worked with the US government to address risks" tied to both models, and that those efforts had "yielded significant progress.

" Mythos 5, unlike Fable, has never been freely available and ships with guardrails meant to deter cyberattacks and biological misuse.

Why developers cared so much about losing Fable

Fable 5's disappearance hit hard because the model had earned real devotion fast.

Anthropic billed it as the most capable model ever released to the public, and early users agreed. Every's "Vibe Check" newsletter called it the best coding model in the world before it vanished—three days after launch. In testing Anthropic highlighted, payments firm Stripe used Fable 5 to rework a 50-million-line codebase in a single day, a job its engineers said would have taken more than two months by hand.When access cut out on June 12, automated workflows froze and companies rushed to swap in rivals, including cheaper Chinese models.

For non-technical early adopters, a top-tier tool being yanked from their hands felt unprecedented.

What still stands between Fable and its comeback

The path back isn't fully clear. The Pentagon and National Security Agency still need to sign off before Fable 5 can return, so the outcome stays unpredictable. Other agencies, the source said, have already decided the model can safely go back into the wild. Behind the scenes, Lutnick and Treasury Secretary Scott Bessent reportedly helped cool a four-month feud—a notable shift from Defense Secretary Pete Hegseth's earlier move labeling Anthropic a "Supply-Chain Risk to National Security.

"Two open questions remain for users. It's unclear whether subscribers will get back the free Fable access they were promised through June 22, or whether it returns behind extra fees or identity checks. Both Anthropic and OpenAI, meanwhile, are pushing the administration to replace its case-by-case reviews with a formal, repeatable process for vetting new models—something both companies argue the current standoff has shown is badly needed.