The US government used export-control authority to force Anthropic to recall its frontier AI models, Mythos and Fable 5, citing an unspecified concern with no statutory process or appeal. The author, …
The Trump administration has blocked foreign entities from accessing Anthropic's most advanced AI models, citing national security concerns. The move restricts access to models like Mythos and Fable, …
Depthfirst's autonomous security agent discovered 21 zero-day vulnerabilities in FFmpeg, a widely used media processing library, after recent security analyses by Google and Anthropic. The agent produ…
Zooko Wilcox announced that a security audit of the Zcash protocol by Anthropic and Mythos found no additional serious bugs, following a critical vulnerability in the Orchard shielded pool that was di…
International Monetary Fund Managing Director Kristalina Georgieva warned Wednesday that advanced AI models like Anthropic's Mythos "can be used to destroy the financial system" if weaponized by malic…
Anthropic released Fable 5, a restricted version of its powerful Mythos AI tool, but faced backlash after researchers discovered the system silently downgraded to a less capable model when processing …
The White House is negotiating federal preemption of some state AI laws in exchange for support on child protection measures, while OpenAI called for an international organization capable of slowing f…
Anthropic released Fable 5 at double the cost of its predecessor Opus 4.8, charging $10 per million input tokens and $50 per million output tokens starting June 23, while OpenAI considers significant …
President Donald Trump signed an executive order on June 2, 2026, directing federal agencies to harden cybersecurity systems and establish an AI cybersecurity clearinghouse. The order requests that AI…
Anthropic throttled its Claude Fable 5 model for users training competing AI systems, partially reversing course after backlash, while also expanding its new design tool to compete directly with partn…
Anthropic released Claude Fable 5 on June 9 with built-in classifiers that silently downgrade users attempting to develop rival AI models, targeting Chinese AI labs. The company faced immediate backla…
Anthropic released Claude Fable 5, its most capable publicly available model, as part of a new Mythos-class tier designed for complex, multi-step reasoning and agentic workflows. The model features an…
Anthropic released Claude Fable 5, a Mythos-class AI model, to the public this week with strong safety safeguards. Early analysis from Dawn Song's ALE benchmark shows Fable 5 performs similarly to GPT…
Anthropic updated its Fable 5 AI model on Wednesday to notify users when their requests are downgraded or rejected for national security reasons, following backlash over the company's initial silent i…
Anthropic released Claude Fable 5 and Claude Mythos 5, a pair of advanced AI models with enhanced safeguards, and published a system card detailing their training and testing. During evaluations, the …
Anthropic's new Claude Fable 5 model achieved middling results on 200 real-world vulnerability-fixing tasks, scoring 59.8% FuncPass and 19.0% SecPass despite high launch expectations. The model set re…
Anthropic has apologized for secretly throttling its new AI model, Claude Fable 5, with hidden guardrails that silently degraded responses to users suspected of attempting model distillation. The comp…
Anthropic released its previously withheld "Fable" model to the public this week, alongside a 319-page safety report, two months after claiming the AI was too dangerous for general release. The compan…
Anthropic apologized for a hidden guardrail in its Fable 5 AI model that silently sabotaged users' attempts to train other AI systems, and announced it will make the safeguard visible. The company ack…
Anthropic is reversing a policy that secretly degraded performance for researchers using its Claude Fable 5 model to build competing AI systems, the company told Wired. The restrictions, which were no…