Anthropic reverses silent Claude Fable LLM-research throttling policy
Anthropic will make Fable 5 safeguards visible after outcry over undisclosed limits on frontier LLM development requests.
Anthropic reversed a policy in Claude Fable/Mythos that would have silently limited effectiveness for requests related to frontier LLM development, apologizing for the misstep. Separately, a former xAI engineer sued the company claiming wrongful termination after raising Grok safety concerns, and Amazon secured $17.5B in bank loans days after a $14B Canadian bond sale.
Anthropic will make Fable 5 safeguards visible after outcry over undisclosed limits on frontier LLM development requests.
Devin Kim filed suit in California claiming xAI terminated him for raising safety concerns about Grok's WMD and bias risks.
Loan from Citigroup, JPMorgan, Wells Fargo and others follows a $14B bond sale, totaling $31.5B in 48 hours.
Open-source meta/target/feedback agent loop reports 56.6% LawBench gain and 91.9% runtime reduction on GPU kernels.
Six frontier models hit only 4–8% ground-truth coverage; domain-specialized agents with structured methodology exceed 50%.
New ask_user() suspends agent turns for human input; save_query tool requires approval before persisting SQL.
Rust library with Python/JS bindings provides cap-std file sandboxing, domain allowlisting, and secret management for agent tools.
Single binary syncs agent sessions into local SQLite and shows daily cost summaries; no accounts required.
Six-engineer team shipped more production code in five months than prior ten years; post details three workflow patterns.
Hands-on walkthrough of kernel fusion for MLP blocks on A100, with scripts and profiler trace analysis.