Anthropic disabled access to its Fable 5 and Mythos 5 AI models to comply with a government directive, according to a CNBC report. The move highlights growing regulatory pressure on AI companies to re…
Anthropic suspended access to its Fable 5 AI model following a US government export control directive citing national security. The directive bars foreign nationals, including foreign Anthropic employ…
The US government issued an export control directive to suspend access to Anthropic's Fable 5 and Mythos 5 models, citing national security concerns over a potential jailbreak method. Anthropic compli…
Anthropic launched Claude Fable 5, its first Mythos-class AI model, on June 9, achieving an 80% score on SWE-Bench Pro but facing criticism for generating dense, jargon-heavy reasoning that even its c…
Anthropic released Claude Fable 5, its new best publicly available model, alongside a 319-page system card detailing safety restrictions and performance trade-offs. The model introduces additional saf…
An open benchmark for code vulnerability scanners shows that LLM-based tools outperform rule-based systems on semantic flaws like SQL injection and command injection, while rule-based tools remain com…
Anthropic faced backlash after its June 10, 2026 launch of Claude Fable 5 and Mythos 5, when users discovered the AI models silently rerouted sensitive queries to an older, less capable model. The com…
Anthropic has introduced a two-tier model strategy with Mythos 5 and Fable 5, both running the same Claude 5 base model but with different safety guardrails. Fable 5, available to general API users an…
AWS Bedrock customers using Anthropic's Mythos-class models, including Fable 5 and Mythos 5, must now consent to 30-day data retention by Anthropic for misuse detection, with data leaving AWS's securi…
Anthropic released two Mythos-class AI models on Tuesday, including Fable 5 for general use and Mythos 5 with lifted safeguards for select cyberdefenders, both priced at half the cost of the Mythos pr…
Anthropic released Claude Fable 5 on Tuesday, its first "Mythos-class" model, but restricted its ability to answer queries on cybersecurity, biology, and chemistry to prevent malicious use. The public…