Simon Willison氏がClaude Fable 5の「とことん率先して行動する（relentlessly proactive）」性質を実例で紹介。スクリーンショットと一行のプロンプトから、ブラウザのスクロールバーバグを調査するためにFableが自らテスト用HTMLページを作成・開き、PythonでCORS対応Webサーバを自作し、Shadow DOM内の要素を計測するJavaScriptを注入、さらにはSafariのウィンドウ番号を取得してスクリーンショットを撮るなど、驚くべき一連の自動デバッグ手法を駆使した様子を詳細にレポート。約12ドル相当のトークンを消費し、最終的に原因を特定して修正に成功したが、同時にコーディングエージェントのセキュリティリスクについても警鐘を鳴らしている。
Andrej Karpathy announces the release of Claude Fable 5, the same underlying model as Mythos but with added safeguards. He calls it a major step forward, particularly for long problem-solving sessions on difficult tasks, and describes it as state-of-the-art on nearly all benchmarks with exceptional performance in software engineering, research, and vision.
Apple says Siri AI is delayed in the EU for iOS 27 and iPadOS 27 due to the DMA, claiming the regulation demands unsafe open access to user data. The European Commission rejected Apple's proposed safety measures, leaving no timeline for release.
The U.S. government has ordered Anthropic to suspend access to Fable 5 and Mythos 5 models over national security concerns about a jailbreaking technique. Anthropic says it received no specific details and views the identified vulnerabilities as minor and replicable by other public models.
The US government ordered Anthropic to block foreign nationals from accessing its AI models. The author argues this shifts AI regulation from safety to nationalist control, treating technology as a weapon for Americans only, and warns Europe to build its own capabilities rather than rely on regulation alone.
A court has ruled Google can be held liable for AI-generated hallucinations produced by its systems, marking a significant legal precedent that could influence future cases and regulations in other jurisdictions.