Anthropic released Claude Fable 5, a Mythos-class model previously considered too capable to ship, on June 9, 2026. However, evaluations comparing Fable 5 to Opus 4.8 across nearly 1,000 agent tasks s…
Anthropic disabled access to its advanced AI models, including Mythos, after the Trump administration ordered the company to block foreign nationals from using the technology, citing national security…
The US government has restricted access to Anthropic's strongest AI model, Fable, signaling a potential shift toward government control of advanced LLMs. Commenters debate whether this is a punitive m…
The White House imposed export controls on Anthropic's Mythos AI model over suspicions that a China-linked group accessed it, prompting Anthropic to remove the models from the market. The Trump admini…
Anthropic shut down access to its Fable and Mythos AI models after the White House invoked export controls, demanding the company block foreign nationals from using the models due to alleged cybersecu…
Anthropic benefits from the US government's export ban on Fable/Mythos, validating its claim that the AI model was too dangerous to release. The ban provides a free pass to miss revenue targets, creat…
Anthropic released its Mythos-class AI model as Fable with guardrails, but a trusted partner discovered a jailbreak exposing advanced cyber capabilities. The US government asked Anthropic to fix the v…
Anthropic released its Mythos class models as Fable with guardrails, but a trusted partner discovered a jailbreak exposing advanced cyber capabilities. The US government requested Anthropic fix the is…
Anthropic released Claude Fable 5, its most powerful AI model to date, on June 9, 2026, but the US government ordered its shutdown four days later due to export control directives. Fable 5 is a detune…
Anthropic CEO Dario Amodei warned that his company's Mythos AI model posed national security risks, prompting the Trump administration to order Anthropic to block foreign access to Mythos 5 and Fable …
The Mythos AI model has achieved superhuman performance in cybersecurity, finding thousands of zero-day exploits that survived decades of human review, signaling the displacement of human researchers.…
A user reported losing cryptocurrency due to key theft from a project-linked wallet, possibly linked to the Mythos/Fable release. The user questions whether others have noticed an increase in lost fun…
On June 9, 2026, Anthropic released Claude Fable 5, the most capable AI model publicly available at the time, but access was cut off within 72 hours after U.S. government intervention. The underlying …
A user questions whether Anthropic's release of Mythos and Fable, a new generation of AI models under a new name, is merely marketing hype, noting diminishing differences between LLM versions.…
Anthropic's Mythos model exhibits reasoning traces that appear illegible but are actually compact shorthand for solving a Solitaire card puzzle, contrary to concerns about uninterpretable internal lan…
The US government directed Anthropic to disable access to its Fable and Mythos models for all foreign nationals, citing a national security concern over a potential jailbreak method. Anthropic complie…
A jailbreak technique has potentially bypassed safety measures on Anthropic's Fable-5 model, allowing the extraction of harmful information such as meth synthesis pathways. The attack used methods inc…
White House officials are considering giving the Cybersecurity and Infrastructure Security Agency access to Anthropic's advanced AI model Mythos to scan federal networks for vulnerabilities. The discu…
The US government has ordered Anthropic to suspend access to its Fable and Mythos AI models for foreign nationals, including employees, drawing a line that treats the technology as too dangerous for n…
The US government forced Anthropic to shut down API access to its Fable and Mythos AI models via export controls, citing national security concerns after another company demonstrated a way around the …